[CI Skip] release/stable 3.0.1

skip-checks: true
3.0 release (#643 )
2020-07-27 06:21:35 +00:00 · 2020-07-27 08:17:28 +02:00 · 2020-07-27 06:09:08 +00:00 · 2020-07-27 08:05:04 +02:00 · 2020-07-22 15:45:42 +00:00 · 2020-07-22 17:41:49 +02:00
192 changed files with 7755 additions and 5024 deletions
@@ -1,2 +1,2 @@
 5
-2.6.2
+2.6.22.12.2
@@ -1,3 +1,4 @@
+.eslintrc.js
 **/build/*
 **/coverage/*
 **/node_modules/*
@@ -10,9 +10,6 @@ jobs:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v1
-    - uses: actions/setup-node@v1
-      with:
-        node-version: '12.x'
    - name: ${{ matrix.step }}
      env:
        CC_TEST_REPORTER_ID: ${{ secrets.CC_TEST_REPORTER_ID }}
@@ -10,30 +10,24 @@ jobs:
      matrix:
        step: ['build:release', 'docs:release']
    name: ${{ matrix.step }}
-    if: "! contains(github.event.head_commit.message, '[CI Skip]')"
+    if: "! startsWith(github.event.head_commit.message, '[CI Skip]') && github.repository == 'polkadot-js/common'"
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v1
      with:
        token: ${{ secrets.GH_PAT }}
-    - uses: actions/setup-node@v1
-      with:
-        node-version: '12.x'
    - name: ${{ matrix.step }}
      env:
        CC_TEST_REPORTER_ID: ${{ secrets.CC_TEST_REPORTER_ID }}
        GH_PAGES_SRC: build-docs
        GH_PAT: ${{ secrets.GH_PAT }}
-        GH_TOKEN: ${{ secrets.GH_PAT }}
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GH_RELEASE_GITHUB_API_TOKEN: ${{ secrets.GH_PAT }}
        NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
      run: |
        yarn install --immutable | grep -v 'YN0013'
        yarn ${{ matrix.step }}

  dummy:
-    name: Dummy
-    if: "contains(github.event.head_commit.message, '[CI Skip]')"
    runs-on: ubuntu-latest
    steps:
    - name: dummy
@@ -1,25 +1,100 @@
-# 2.7.1 Mar 31, 2020
+# CHANGELOG
+
+## 3.0.1 Jul 27, 2020
+
+- Add Katal ss58Format (Thanks to https://github.com/retotrinkler)
+- Adjust JSON pair output with scrypt kdf (version 3 output)
+
+## 2.18.1 Jul 13, 2020
+
+- Add `base64{Decode, Encode, Validate}` as crypto utils
+- Extract `base58Validate` from base58 decode checks
+- Add `isAscii` to allow detection of printable ASCII sequences (including tab, newline)
+- Add `isUtf8` to allow detection of valid Utf8 sequences
+
+## 2.17.1 Jul 6, 2020
+
+- Add `encode{Derived, Multi}Address` to encode derived/multi addresses
+- Correctly handle 0 inputs in `numberToU8a`
+- Simplify and flatten base58 dependencies
+
+## 2.16.1 Jun 29, 2020
+
+- Adjust `addressCheck` and `encodeAddress` function to check for valid base58 alphabets (better error reporting)
+- Rename `createKeySub` to `createKeyDerived` based on changed in Substrate (sub keys now named derived)
+
+## 2.15.1 Jun 22, 2020
+
+- Adjust keyring to no override 0-prefix (Polkadot live) settings with keychain default
+
+## 2.14.1 Jun 16, 2020
+
+- Add `extractTime` utility conversion (Thanks to https://github.com/kwingram25)
+
+## 2.13.1 Jun 8, 2020
+
+- Fix JS blake2 fallback (non-wasm) to correctly deal with hex inputs
+- Align `bnToHex` signature with `bnToU8a` (with old/new style)
+- Allow `bnTo{Hex,U8a}` to take any value with `.toBn()` signatures
+
+## 2.12.2 Jun 1, 2020
+
+- Fix `isFunction` signature to assert `Function`
+
+## 2.12.1 Jun 1, 2020
+
+- **Important** Removed `mnemonicToSeed`, it is only for bip39, use `mnemonicToMiniSecret` for the Substrate variant
+- Added `u8aEq` to compare two Uint8Array or hex values for an exact match
+- Added `addressEq` to compare two addresses (ss58, Uint8array or hex) for an exact match
+- Throw error on `{nacl,schnorrkel}Verify` on invalid input lengths
+- Performance optimizations in `u8aToHex` & `u8aConcat`
+
+## 2.11.1 May 26, 2020
+
+- Internal cleanups on typings
+- Support for latest TypeScript, eslint & typescript-eslint
+
+## 2.10.1 May 14, 2020
+
+- Add Kulupu ss58 prefix as an allowed value (Thanks to https://github.com/sorpaas)
+- Make the `TextEncoder` polyfill handle non-compliant Buffer implementations (newer versions of Jest)
+- `DeriveJunction` now also allows for BigInt values (aligning with number types elsewhere)
+- Small code-flow optimizations
+
+## 2.9.1 Apr 30, 2020
+
+- Add support for ECDSA keypairs (Thanks to https://github.com/akru)
+- Added `createKeyMulti` & `createKeySub` to create utility sub & multi keys
+- Added `u8aSorted` to sort `Uint8Arrays`
+- Added `sortAddresses` to sort addresses based on their internal representation
+
+## 2.8.1 Apr 9, 2020
+
+- Keypair will now throw an error when attempting to sign/derive using a locked pair (Thanks to https://github.com/h4x3rotab)
+- Cleanup `isDevelopment` regex to cater for chains such as `Westend Development`
+
+## 2.7.1 Mar 31, 2020

 - Add `bnSqrt` to calculate the integer sqrt via Newton iteration
 - Allow for optional wasm-crypto, specifically via `@polkadot/util-crypto/noWasm`
 - Misc. CI infrastructure cleanups

-# 2.6.1 Feb 29, 2020
+## 2.6.1 Feb 29, 2020

 - **Breaking change** Following on the 2.0 release, `@polkadot/wasm` was updated to 1.1+. sr25510 now only verifies 0.8+ signatures, closing the loop on dropping Substrate 1.x-era support
 - Add `signatureVerify (message: Uint8Array | string, signature: Uint8Array | string, addressOrPublicKey: Uint8Array | string): VerifyResult` to verify any signature, regardless of type. Returns validity & detected crypto type.
 - Add `cryptoIsReady (): boolean` function to check status of initialization
 - Add `addressCheckChecksum (decoded: Uint8Array)` as an helper to extract and verify the ss58 checksum
- Swap to yarn 2, allow use in yan 2 projects
+- Swap to yarn 2, allow use in yarn 2 projects

-# 2.5.1 Feb 22, 2020
+## 2.5.1 Feb 22, 2020

 - **Breaking change** (TypeScript only) The `*.d.ts` files now contain TypeScript 3.8 features, `#private`, which is not usable in older versions
 - Add `isBigInt(value)` to allow `BigInt` checks. Also add support in `bnToBn` as well as number conversion utils
 - Add `isChildClass(Parent, Child?)` to check if a class extends the parent, asserting Child is Parent
 - (internal) Use `#<field>` instead of `private _<field>` for private class variables

-# 2.4.1 Feb 18, 2020
+## 2.4.1 Feb 18, 2020

 - Ensure that `formatBalance` does not apply unit overrides apply when no SI is applicable
 - Adjust `formatBalance(<balance>, <options>)` to take expanded `withUnit: string | boolean` option where string is an actual unit, e.g. `KSM`
@@ -27,22 +102,22 @@
 - The `.setSS58Format` on keyring will now just operate on pairs created on the keyring, not globally. The global `setSS58Format` in `@polkadot/util-crypto` will be deprecated.
 - The deprecated `addressPrefix` option to keyring has been belatedly removed (Use `ss58Format` rather)

-# 2.3.1 Feb 15, 2020
+## 2.3.1 Feb 15, 2020

 - Remove dependency on moment.js with `formatDate` function (Thanks to https://github.com/AndreasGassmann)
 - Move TypeScript `@types/*` to dev deps (Thanks to https://github.com/AndreasGassmann)
 - Update to `@polkadot/wasm-crypto` 1.0
- Cleanup dependencies to pave the way for using yarnpkg 2 (Explicit instead of implicit)
+- Cleanup dependencies to pave the way for using yarn 2 (Explicit instead of implicit)

-# 2.2.1 Feb 06, 2020
+## 2.2.1 Feb 06, 2020

 - Add resolver for jest requires (tests from src)

-# 2.1.1 Feb 04, 2020
+## 2.1.1 Feb 04, 2020

 - Update `detectPackage(<package.json>, __dirname?)` with calling folder

-# 2.0.1 Jan 30, 2020
+## 2.0.1 Jan 30, 2020

 - Update w3f/schnorrkel to 0.8.5 (Full Substrate 2.x support, no 1.x support)
 - Remove Alice session (ed2551) account from testing keyring (not applicable to Substrate 2.x)
@@ -50,27 +125,27 @@
 - Renamed `assertSingletonPackage` to `detectPackage` with inclusion of version listing
 - Swap to elliptic library for secp2561 recovery (No node bindings)

-# 1.8.1 Jan 09, 2020
+## 1.8.1 Jan 09, 2020

 - Add cross-client encryption/decryption support (Thanks to https://github.com/hskang9)

-# 1.7.1 Nov 27, 2019
+## 1.7.1 Nov 27, 2019

 - `formatBalance` signature now allows to force unit displays
 - Keypair now allows for derive on a pair, with `pair.derive(...)`
 - `assert` now acts like a real asserts, with no return - signature adapted for new TS 3.7

-# 1.6.1 Oct 24, 2019
+## 1.6.1 Oct 24, 2019

 - `pair.sign(message)` now takes an optional second `options?: SignOptions` parameter, where `SignOptions` is currently defined as `{ withType: boolean }`. Here `withType` instructs the signing to prepend the type of signature (ed2551, sr25519 or ecdsa). This is used for the new Polkadot/Substrate MultiSignature format.

-# 1.5.1 Sep 25, 2019
+## 1.5.1 Sep 25, 2019

 - Fix typings on the Keyring-exposed encode & decodeAddress
 - Allow ss58Format = 0 as a valid value
 - Loosen type definitions for allowed ss58format values (still checked against allowed array)

-# 1.4.1 Sep 12, 2019
+## 1.4.1 Sep 12, 2019

 - **Breaking change** To set the `ss58Format`, you should now use `setSS58Format` as opposed to the old `setAddressPrefix`
 - Renamed `keyring.setAddressPrefix` to `keyring.setSS58Format`
@@ -78,25 +153,25 @@
 - Added `stringToHex` and `hexToString` conversion utilities to `@polkadot/util`
 - Swap to [Babel 7.6.0](https://babeljs.io/) for all compilation, for latest improvements in code generation

-# 1.3.1 Sep 10, 2019
+## 1.3.1 Sep 10, 2019

 - Remove the `ExtError` class, always prefer the standard JS `Error` object for errors. This would bre a breaking change for any applications using `ExtError`

-# 1.2.1 Sep 09, 2019
+## 1.2.1 Sep 09, 2019

 - Keyring `addFromAddress` can now be used to store external accounts, for example those provided by external signers
 - Maintainability updates

-# 1.1.1 Aug 09, 2019
+## 1.1.1 Aug 09, 2019

 - `assertSingletonPackage` now warns via console.warn, but does not throw. This does allow the info to come accross while still allowing the app developers using multiple libraries time to fix.

-# 1.0.1 Aug 02, 2019
+## 1.0.1 Aug 02, 2019

 - `formatBalance` now allows for `Compact` inputs
 - `formaBalance` now allows correct formatting of very large decimals

-# 0.94.1 Jul 20, 2019
+### 0.94.1 Jul 20, 2019

 - Add `checkAddress(address, prefix)` to `@polkadot/util-crypto` that validates an ss-58 address
 - Add support for the Kusama network (as a valid checked prefix)
@@ -104,7 +179,7 @@
 - The ed25519 key for Alice (representing the session), now appears in the test keyrings
 - Fix missing dependencies for keyring (after address moves in 0.93.1)

-# 0.93.1 Jun 14, 2019
+### 0.93.1 Jun 14, 2019

 - Breaking: External pair interface for keyring has been changed. Instead of
  - `getMeta` use the `meta` getter, i.e. `console.log(pair.meta.name)`
@@ -112,133 +187,133 @@
  - `publicKey` use the `publicKey` getter, i.e. `console.log(pair.publicKey)`
 - `Move decodeAddress`, `encodeAddress` & `setAddressPrefix` functions into `@polkadot/util-crypto` from `@polkadot/keyring`. External interfaces should not be affected at this point since it is also (still) exported and exposed on keyring

-# 0.92.1 Jun 04, 2019
+### 0.92.1 Jun 04, 2019

 - Only allow integer input values into `formatBalance`
 - Allow `formatBalance`, `formatDecimal` & `formatNumber` to cater for negative numbers
 - Add 'Bob//stash' to testing keyring, joining the existing 'Alice//stash'

-# 0.91.1 May 22, 2019
+### 0.91.1 May 22, 2019

 - ed25519/sr25519 sign & verify functions can now take the message input as Uint8Array/string/hex and verify allows for the signature/publicKey to be specified as Uint8Array/hex
 - Update `@polkadot/wasm` to include a maintenance bump for the `w3f/schnorrkel` libraries

-# 0.90.1 May 08, 2019
+### 0.90.1 May 08, 2019

 - Moving towards 1.0
 - Added bnMin & bnMax functions

-# 0.76.1 Apr 03, 2019
+### 0.76.1 Apr 03, 2019

 - Fix `addFromMnemonic` to generate using new-style derivation.
 - Pull in `formatBalance`, `formatDecimal`, `formatElapsed`, `formatNumber`, `calcSi`, `findSi` & `isTestChain` utility functions from the originals in `@polkadot/ui-util`
 - Swap out `wasm-schnorrkel` & `wasm-ed25519` for combined version with `wasm-crypto`
 - Swap DB interfaces to optional LRU, removing `transactionAsync` (client-only changes)

-# 0.75.1 Mar 29, 2019
+### 0.75.1 Mar 29, 2019

 - Start journey to 1.0

-# 0.42.1 Mar 28, 2019
+### 0.42.1 Mar 28, 2019

 - Add `assertSingletonPackage` to util
 - Ensure that only a single keyring instance is loaded (uses above)

-# 0.41.1 Mar 25, 2019
+### 0.41.1 Mar 25, 2019

 - Extensions to the client-specific database interfaces (non-breaking for API and util users)

-# 0.40.1 Mar 23, 2019
+### 0.40.1 Mar 23, 2019

 - Add additional derivation path extraction mechanisms to util-crypto
 - Add createFromUri function to keypair (creates keypair, does not add it)
 - Allow all crypto hashing & ed25519 to use WASM (as available, JS fallbacks)

-# 0.39.1 Mar 20, 2019
+### 0.39.1 Mar 20, 2019

 - Pull in bip39 generation functions from `@poladkot/wasm-crypto` with a fallback to the pure JS versions

-# 0.38.1 Mar 18, 2019
+### 0.38.1 Mar 18, 2019

 - Align with current substrate master for sr25519 keys and hard/soft derivation
 - Swap default dev keys to derived (sr25519)

-# 0.37.1 Mar 14, 2019
+### 0.37.1 Mar 14, 2019

 - Swap to publishing -beta.x on merge (non-breaking testing)

-# 0.36.1 Mar 13, 2019
+### 0.36.1 Mar 13, 2019

 - Add `fromUri` to keyring along with hard & soft key derivation.

-# 0.35.1 Mar 04, 2019
+### 0.35.1 Mar 04, 2019

 - Remove NodeJs-only `syncify` function, not exported by the package (with binary dependency for Node)

-# 0.34.1 Feb 13, 2019
+### 0.34.1 Feb 13, 2019

 - Keyring now allows for ed25519 and sr25519 instances. Upon creation, you need to pass the `ed25519`or `sr25519` string to denote the type, i.e. `new Keyring({ type: 'sr25519' })`

-# 0.33.1 Nov 22, 2018
+### 0.33.1 Nov 22, 2018

-# 0.32.1 Oct 18, 2018
+### 0.32.1 Oct 18, 2018

-# 0.31.1 Oct 12, 2018
+### 0.31.1 Oct 12, 2018

-# 0.30.1 Sep 11, 2018
+### 0.30.1 Sep 11, 2018

-# 0.29.1 Sep 01, 2018
+### 0.29.1 Sep 01, 2018

-# 0.28.1 Aug 11, 2018
+### 0.28.1 Aug 11, 2018

-# 0.27.1 Aug 06, 2018
+### 0.27.1 Aug 06, 2018

-# 0.26.1 Jun 27, 2018
+### 0.26.1 Jun 27, 2018

-# 0.25.1 Jun 26, 2018
+### 0.25.1 Jun 26, 2018

-# 0.24.1 Jun 22, 2018
+### 0.24.1 Jun 22, 2018

-# 0.23.1 Jun 21, 2018
+### 0.23.1 Jun 21, 2018

-# 0.22.1 May 24, 2018
+### 0.22.1 May 24, 2018

-# 0.21.1 May 17, 2018
+### 0.21.1 May 17, 2018

-# 0.20.1 May 16, 2018
+### 0.20.1 May 16, 2018

-# 0.19.1 Apr 19, 2018
+### 0.19.1 Apr 19, 2018

-# 0.18.1 Mar 20, 2018
+### 0.18.1 Mar 20, 2018

-# 0.17.1 Mar0 8, 2018
+### 0.17.1 Mar0 8, 2018

-# 0.16.1 Feb 23, 2018
+### 0.16.1 Feb 23, 2018

-# 0.15.1 Feb 15, 2018
+### 0.15.1 Feb 15, 2018

-# 0.14.1 Feb 07, 2018
+### 0.14.1 Feb 07, 2018

-# 0.13.1 Jan 25, 2018
+### 0.13.1 Jan 25, 2018

-# 0.12.1 Jan 11, 2018
+### 0.12.1 Jan 11, 2018

-# 0.11.1 Dec 30, 2017
+### 0.11.1 Dec 30, 2017

-# 0.10.1 Dec 17, 2017
+### 0.10.1 Dec 17, 2017

-# 0.9.1 Dec 14, 2017
+### 0.9.1 Dec 14, 2017

-# 0.8.1 Dec 12, 2017
+### 0.8.1 Dec 12, 2017

-# 0.7.1 Dec 11, 2017
+### 0.7.1 Dec 11, 2017

-# 0.6.1 Nov 30, 2017
+### 0.6.1 Nov 30, 2017

-# 0.5.1 Nov 20, 2017
+### 0.5.1 Nov 20, 2017

-# 0.4.1 Nov 19, 2017
+### 0.4.1 Nov 19, 2017

-# 0.3.1 Nov 19, 2017
+### 0.3.1 Nov 19, 2017

-# 0.2.1 Nov 18, 2017
+### 0.2.1 Nov 18, 2017
@@ -1 +1,5 @@
+// Copyright 2017-2020 @polkadot/util authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
 module.exports = require('@polkadot/dev/config/babel');
@@ -1,6 +1,7 @@
+/* eslint-disable header/header */
 /* eslint-disable @typescript-eslint/require-await */
 /* eslint-disable @typescript-eslint/unbound-method */
-/* eslint-disable @typescript-eslint/no-var-requires */
+
 // Import Keyring class and utility function
 const Keyring = require('@polkadot/keyring').default;
 const stringToU8a = require('@polkadot/util/string/toU8a').default;
@@ -1,6 +1,7 @@
+/* eslint-disable header/header */
 /* eslint-disable @typescript-eslint/require-await */
 /* eslint-disable @typescript-eslint/unbound-method */
-/* eslint-disable @typescript-eslint/no-var-requires */
+
 // Import Keyring class and utility function
 const Keyring = require('@polkadot/keyring').default;
 const stringToU8a = require('@polkadot/util/string/toU8a').default;
@@ -1,12 +1,18 @@
-/* eslint-disable @typescript-eslint/no-var-requires */
-const { encodeAddress, decodeAddress } = require('@polkadot/keyring');
-const { isHex, hexToU8a } = require('@polkadot/util');
+/* eslint-disable header/header */
+
+const { decodeAddress, encodeAddress } = require('@polkadot/keyring');
+const { hexToU8a, isHex } = require('@polkadot/util');

 const address = '5GrpknVvGGrGH3EFuURXeMrWHvbpj3VfER1oX5jFtuGbfzCE';

 const isValidAddressPolkadotAddress = () => {
  try {
-    encodeAddress(isHex(address) ? hexToU8a(address) : decodeAddress(address));
+    encodeAddress(
+      isHex(address)
+        ? hexToU8a(address)
+        : decodeAddress(address)
+    );
+
    return true;
  } catch (error) {
    return false;
@@ -1,7 +1,8 @@
+/* eslint-disable header/header */
 /* eslint-disable @typescript-eslint/require-await */
 /* eslint-disable @typescript-eslint/unbound-method */
-/* eslint-disable @typescript-eslint/no-var-requires */
-const { naclEncrypt, naclDecrypt } = require('@polkadot/util-crypto');
+
+const { naclDecrypt, naclEncrypt } = require('@polkadot/util-crypto');

 async function main () {
  const secret = new Uint8Array(32);
@@ -1,6 +1,7 @@
+/* eslint-disable header/header */
 /* eslint-disable @typescript-eslint/require-await */
 /* eslint-disable @typescript-eslint/unbound-method */
-/* eslint-disable @typescript-eslint/no-var-requires */
+
 const { stringToU8a, u8aToHex } = require('@polkadot/util');
 const { naclEncrypt, naclKeypairFromSeed, naclSign, naclVerify, randomAsU8a } = require('@polkadot/util-crypto');

@@ -9,7 +10,7 @@ async function main () {
  const seedAlice = 'Alice'.padEnd(32, ' ');

  // Generate new public/secret keypair for Alice from the supplied seed
-  const { secretKey, publicKey } = naclKeypairFromSeed(stringToU8a(seedAlice));
+  const { publicKey, secretKey } = naclKeypairFromSeed(stringToU8a(seedAlice));

  // Encrypt message. Create Uint8Array's filled with random bytes of specified length
  const secret = randomAsU8a(32);
@@ -1,6 +1,8 @@
+/* eslint-disable header/header */
 /* eslint-disable @typescript-eslint/unbound-method */
 /* eslint-disable @typescript-eslint/require-await */
-/* eslint-disable @typescript-eslint/no-var-requires,@typescript-eslint/no-unused-vars */
+/* eslint-disable @typescript-eslint/no-unused-vars */
+
 const { mnemonicGenerate, mnemonicToSeed, mnemonicValidate, naclKeypairFromSeed } = require('@polkadot/util-crypto');

 async function main () {
@@ -19,7 +21,7 @@ async function main () {
  const seedAlice = mnemonicToSeed(mnemonicAlice);

  // Generate new public/secret keypair for Alice from the supplied seed
-  const { secretKey, publicKey } = naclKeypairFromSeed(seedAlice);
+  const { publicKey, secretKey } = naclKeypairFromSeed(seedAlice);

  // Encrypt, Sign and Validate the message. See Example 'Sign & Verify Message'
 }
@@ -0,0 +1,5 @@
+# Generate a Multisig Account
+
+Substrate provides a multisig dispatch function in its 
+[Utility pallet](https://crates.parity.io/pallet_utility/index.html). This example generates the 
+address that would correspond to a set of addresses and threshold.
@@ -0,0 +1,40 @@
+/* eslint-disable header/header */
+import { createKeyMulti, encodeAddress, sortAddresses } from '@polkadot/util-crypto';
+
+const SS58Prefix = 0;
+
+// Input the addresses that will make up the multisig account.
+const addresses = [
+  '1nUC7afqmo7zwRFWxDjrUQu9skk6fk99pafb4SiyGSRc8z3',
+  '1ZX2XntfLEHrBPy73DpfQp9rG7pbLyvrFjEpi7mNKQgyga5',
+  '14b1kB7CrqzRUeMsKc26FJ73f8FCpxAX6sNieu9gfYSfJuoL'
+];
+
+// The number of accounts that must approve. Must be greater than 0 and less than
+// or equal to the total number of addresses.
+const threshold = 2;
+
+// The address (as index in `addresses`) that will submit a transaction.
+const index = 0;
+
+function main () {
+  // Address as a byte array.
+  const multiAddress = createKeyMulti(addresses, threshold);
+
+  // Convert byte array to SS58 encoding.
+  const Ss58Address = encodeAddress(multiAddress, SS58Prefix);
+
+  console.log(`\nMultisig Address: ${Ss58Address}`);
+
+  // Take addresses and remove the sender.
+  const otherSignatories = addresses.filter((who) => who !== addresses[index]);
+
+  // Sort them by public key.
+  const otherSignatoriesSorted = sortAddresses(otherSignatories, SS58Prefix);
+
+  console.log(`\nOther Signatories: ${otherSignatoriesSorted}\n`);
+
+  process.exit();
+}
+
+main();
@@ -0,0 +1,14 @@
+{
+  "name": "04_generate_multisig_address",
+  "version": "0.1.0",
+  "description": "Example showing how to generate a multisig address for Substrate's Utility pallet",
+  "main": "index.js",
+  "author": "joepetrowski",
+  "license": "MIT",
+  "scripts": {
+    "start": "node index.js"
+  },
+  "dependencies": {
+    "@polkadot/util-crypto": "^2.9.0-beta.1"
+  }
+}
@@ -1,10 +1,14 @@
-// eslint-disable-next-line @typescript-eslint/no-var-requires
+// Copyright 2017-2020 @polkadot/util authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
 const config = require('@polkadot/dev/config/jest');

 module.exports = Object.assign({}, config, {
  moduleNameMapper: {
    '@polkadot/keyring(.*)$': '<rootDir>/packages/keyring/src/$1',
    '@polkadot/util-(crypto)(.*)$': '<rootDir>/packages/util-$1/src/$2',
+    // eslint-disable-next-line sort-keys
    '@polkadot/util(.*)$': '<rootDir>/packages/util/src/$1'
  },
  modulePathIgnorePatterns: [
@@ -1,7 +1,6 @@
 // Copyright 2017-2020 @polkadot/util authors & contributors
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.
-/* eslint-disable @typescript-eslint/no-var-requires */

 const path = require('path');

@@ -9,5 +9,5 @@
  "packages": [
    "packages/*"
  ],
-  "version": "2.7.1"
+  "version": "3.0.1"
 }
@@ -7,7 +7,7 @@
    "packages/*"
  ],
  "resolutions": {
-    "typescript": "^3.8.3"
+    "babel-core": "^7.0.0-bridge.0"
  },
  "scripts": {
    "build": "polkadot-dev-build-ts",
@@ -21,9 +21,10 @@
    "test:one": "polkadot-dev-run-test"
  },
  "devDependencies": {
-    "@babel/core": "^7.9.0",
-    "@polkadot/dev": "^0.51.9",
-    "@polkadot/ts": "^0.3.14",
-    "@types/jest": "^25.1.4"
-  }
+    "@babel/core": "^7.10.5",
+    "@polkadot/dev": "^0.55.28",
+    "@polkadot/ts": "^0.3.29",
+    "@types/jest": "^26.0.7"
+  },
+  "version": "3.0.1"
 }
@@ -1,6 +1,6 @@
 {
  "name": "@polkadot/keyring",
-  "version": "2.7.1",
+  "version": "3.0.1",
  "description": "Keyring management",
  "main": "index.js",
  "publishConfig": {
@@ -27,8 +27,8 @@
  },
  "homepage": "https://github.com/polkadot-js/common/tree/master/packages/keyring#readme",
  "dependencies": {
-    "@babel/runtime": "^7.9.2",
-    "@polkadot/util": "2.7.1",
-    "@polkadot/util-crypto": "2.7.1"
+    "@babel/runtime": "^7.10.5",
+    "@polkadot/util": "3.0.1",
+    "@polkadot/util-crypto": "3.0.1"
  }
 }
@@ -147,4 +147,158 @@ describe('keypair', (): void => {
      expect(pair.verify(MESSAGE, signature)).toBe(true);
    });
  });
+
+  describe('ecdsa', (): void => {
+    const seedOne = 'potato act energy ahead stone taxi receive fame gossip equip chest round';
+    const seedTwo = hexToU8a('0x3c74be003bd9a876be439949ccf2b292bd966c94959a689173b295b326cd6da7');
+    const publicKeyOne = hexToU8a('0x02c6b6c664db5ef505477bba1cf2f1789c98796b9bb5fa21abd0ac4589bed980e7');
+    const publicKeyTwo = hexToU8a('0x021da683b913fb28c979ba3e5f1881415cef4b1f58a5d05ed3610a2995e7b4943c');
+    const addressKeyOne = hexToU8a('0x0cfd0dd2c59a9987b9848919163931b6a42283ffd3d91e92c98b522525a7038f');
+    let keyring: Keyring;
+
+    beforeEach((): void => {
+      keyring = new Keyring({ ss58Format: 42, type: 'ecdsa' });
+
+      keyring.addFromMnemonic(seedOne, {});
+    });
+
+    it('creates with dev phrase when only path specified', (): void => {
+      expect(
+        keyring.createFromUri('//Alice').address
+      ).toEqual('5C7C2Z5sWbytvHpuLTvzKunnnRwQxft1jiqrLD5rhucQ5S9X');
+    });
+
+    it('adds the pair', (): void => {
+      expect(
+        keyring.addFromSeed(seedTwo, {}).publicKey
+      ).toEqual(publicKeyTwo);
+    });
+
+    it('adds from a mnemonic', (): void => {
+      keyring.setSS58Format(68);
+
+      expect(
+        keyring.addFromMnemonic('moral movie very draw assault whisper awful rebuild speed purity repeat card').address
+      ).toEqual('7ooxHV3mz4nnWbK8v7Mxcb71QMpof268eL1A2VrYWUNWJk8P');
+    });
+
+    it('allows publicKeys retrieval', (): void => {
+      keyring.addFromSeed(seedTwo, {});
+
+      expect(
+        keyring.getPublicKeys()
+      ).toEqual([publicKeyOne, publicKeyTwo]);
+    });
+
+    it('allows retrieval of a specific item', (): void => {
+      expect(
+        keyring.getPair(addressKeyOne).publicKey
+      ).toEqual(publicKeyOne);
+    });
+
+    it('allows adding from JSON', (): void => {
+      expect(
+        keyring.addFromJson(
+          JSON.parse('{"address":"5DzMsaYFhmpRdErWrP6K6PD7UXzYoeETToSBUrZSvxasqWRz","encoded":"0xa192d39b42bc1601bf61df31039a554228593fadf870bc837b658a5114627aca199fff596260c95fe8994c66a47636cf0270aa08f402ba5541038753960d00e6c3af5e239ec58fb1eef3db7d6bc266f4853bdfe4ed17122d9092d879014d53980d2ee57f6f55a88c38836447d8645008e8815379626addc8f81f80cd49a2","encoding":{"content":"pkcs8","type":"xsalsa20-poly1305","version":"2"},"meta":{}}')
+        ).address
+      ).toEqual('5DzMsaYFhmpRdErWrP6K6PD7UXzYoeETToSBUrZSvxasqWRz');
+    });
+
+    it('signs and verifies', (): void => {
+      const MESSAGE = stringToU8a('this is a message');
+      const pair = keyring.getPair(addressKeyOne);
+      const signature = pair.sign(MESSAGE);
+
+      expect(pair.verify(MESSAGE, signature)).toBe(true);
+    });
+  });
+
+  describe('util', (): void => {
+    let keyring: Keyring;
+
+    beforeEach((): void => {
+      keyring = new Keyring({ ss58Format: 42 });
+    });
+
+    it('can re-encode an address to Polkadot live', (): void => {
+      expect(
+        keyring.encodeAddress('5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY', 0)
+      ).toEqual('15oF4uVJwmo4TdGW7VfQxNLavjCXviqxT9S1MgbjMNHr6Sp5');
+    });
+
+    it('can re-encode an address to keyring default', (): void => {
+      expect(
+        keyring.encodeAddress('15oF4uVJwmo4TdGW7VfQxNLavjCXviqxT9S1MgbjMNHr6Sp5')
+      ).toEqual('5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY');
+    });
+  });
+
+  describe('version 2 JSON', (): void => {
+    const PAIR = '{"address":"5CczAE5AmGrZ93MeVhha3Ywam7j9dKB7cArnH7gtrXcMFJvu","encoded":"0xee8f236e2ac3217ce689692a4afc612220dc77fddaed0482f8f95136a7c3e034cccfbc495410a6e9b2439904974ed1d207abeca536ff6985ceb78edeeb3dc343e561c184c488101af8811d1331430b4ccf0e96ef507132e5132964e8564232e7100d973c5bee7b231dd0c8ad5273f3501515a422c8d7ed9d20a73c0ed17c98ee4588e54844bb73052dcad81f7a1094613d63c162fec7446c88b1fae70e","encoding":{"content":["pkcs8","sr25519"],"type":"xsalsa20-poly1305","version":"2"},"meta":{"genesisHash":"0xe143f23803ac50e8f6f8e62695d1ce9e4e1d68aa36c1cd2cfd15340213f3423e","name":"json v2","tags":[],"whenCreated":1595243159596}}';
+    const PASS2 = 'versionTwo';
+    const PASS3 = 'versionThree';
+    let keyring: Keyring;
+
+    beforeEach((): void => {
+      keyring = new Keyring({ ss58Format: 42 });
+    });
+
+    it('can decode from a version 2 JSON file', (): void => {
+      const pair = keyring.addFromJson(JSON.parse(PAIR));
+
+      pair.decodePkcs8(PASS2);
+
+      const json = pair.toJson(PASS3);
+
+      expect(pair.isLocked).toBe(false);
+      expect(pair.address).toBe('5CczAE5AmGrZ93MeVhha3Ywam7j9dKB7cArnH7gtrXcMFJvu');
+      expect(json.encoding).toEqual({
+        content: ['pkcs8', 'sr25519'],
+        type: ['scrypt', 'xsalsa20-poly1305'],
+        version: '3'
+      });
+
+      pair.decodePkcs8(PASS3);
+
+      expect(pair.address).toEqual('5CczAE5AmGrZ93MeVhha3Ywam7j9dKB7cArnH7gtrXcMFJvu');
+    });
+  });
+
+  describe('version 3 JSON (hex)', (): void => {
+    const PAIR = '{"address":"FLiSDPCcJ6auZUGXALLj6jpahcP6adVFDBUQznPXUQ7yoqH","encoded":"0xcd238963070cc4d6806053ee1ac500c7add9c28732bb5d434a332f84a91d9be0008000000100000008000000cf630a1113941b350ddd06697e50399183162e5e9a0e893eafc7f5f4893a223dca5055706b9925b56fdb4304192143843da718e11717daf89cf4f4781f94fb443f61432f782d54280af9eec90bd3069c3cc2d957a42b7c18dc2e9497f623735518e0e49b58f8e4db2c09da3a45dbb935659d015fc94b946cba75b606a6ff7f4e823f6b049e2e6892026b49de02d6dbbd64646fe0933f537d9ea53a70be","encoding":{"content":["pkcs8","sr25519"],"type":["scrypt","xsalsa20-poly1305"],"version":"3"},"meta":{"genesisHash":"0xb0a8d493285c2df73290dfb7e61f870f17b41801197a149ca93654499ea3dafe","name":"version3","tags":[],"whenCreated":1595277797639}}';
+    const PASS3 = 'version3';
+    let keyring: Keyring;
+
+    beforeEach((): void => {
+      keyring = new Keyring({ ss58Format: 2 });
+    });
+
+    it('can decode from a version 3 JSON file', (): void => {
+      const pair = keyring.addFromJson(JSON.parse(PAIR));
+
+      pair.decodePkcs8(PASS3);
+
+      expect(pair.isLocked).toBe(false);
+      expect(pair.address).toBe('FLiSDPCcJ6auZUGXALLj6jpahcP6adVFDBUQznPXUQ7yoqH');
+    });
+  });
+
+  describe('version 3 JSON (base64)', (): void => {
+    const PAIR = '{"address":"FLiSDPCcJ6auZUGXALLj6jpahcP6adVFDBUQznPXUQ7yoqH","encoded":"ILjSgYaGvq1zaCz/kx+aqfLaHBjLXz0Qsmr6RnkOVU4AgAAAAQAAAAgAAAB5R2hm5kgXyc0NQYFxvMU4zCdjB+ugs/ibEooqCvuudbaeKn3Ee47NkCqU1ecOJV+eeaVn4W4dRvIpj5kGmQOGsewR+MiQ/B0G9NFh7JXV0qcPlk2QMNW1/mbJrTO4miqL448BSkP7ZOhUV6HFUpMt3B9HwjiRLN8RORcFp0ID/Azs4Jl/xOpXNzbgQGIffWgCIKTxN9N1ku6tdlG4","encoding":{"content":["pkcs8","sr25519"],"type":["scrypt","xsalsa20-poly1305"],"version":"3"},"meta":{"genesisHash":"0xb0a8d493285c2df73290dfb7e61f870f17b41801197a149ca93654499ea3dafe","name":"version3","tags":[],"whenCreated":1595277797639,"whenEdited":1595278378596}}';
+    const PASS3 = 'version3';
+    let keyring: Keyring;
+
+    beforeEach((): void => {
+      keyring = new Keyring({ ss58Format: 2 });
+    });
+
+    it('can decode from a version 3 JSON file', (): void => {
+      const pair = keyring.addFromJson(JSON.parse(PAIR));
+
+      pair.decodePkcs8(PASS3);
+
+      expect(pair.isLocked).toBe(false);
+      expect(pair.address).toBe('FLiSDPCcJ6auZUGXALLj6jpahcP6adVFDBUQznPXUQ7yoqH');
+    });
+  });
 });
@@ -2,11 +2,11 @@
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.

-import { KeypairType } from '@polkadot/util-crypto/types';
-import { KeyringInstance, KeyringPair, KeyringPair$Json, KeyringPair$Meta, KeyringOptions } from './types';
+import { KeypairType, Keypair } from '@polkadot/util-crypto/types';
+import { KeyringInstance, KeyringPair, KeyringPair$Json, KeyringPair$JsonEncodingTypes, KeyringPair$Meta, KeyringOptions } from './types';

-import { assert, hexToU8a, isHex, stringToU8a } from '@polkadot/util';
-import { decodeAddress, encodeAddress, keyExtractSuri, keyFromPath, naclKeypairFromSeed as naclFromSeed, schnorrkelKeypairFromSeed as schnorrkelFromSeed, mnemonicToMiniSecret } from '@polkadot/util-crypto';
+import { assert, hexToU8a, isHex, isUndefined, stringToU8a } from '@polkadot/util';
+import { base64Decode, decodeAddress, encodeAddress, keyExtractSuri, keyFromPath, naclKeypairFromSeed as naclFromSeed, schnorrkelKeypairFromSeed as schnorrkelFromSeed, secp256k1KeypairFromSeed as secp256k1FromSeed, mnemonicToMiniSecret } from '@polkadot/util-crypto';

 import { DEV_PHRASE } from './defaults';
 import createPair from './pair';
@@ -40,7 +40,7 @@ export default class Keyring implements KeyringInstance {
  constructor (options: KeyringOptions = {}) {
    options.type = options.type || 'ed25519';

-    assert(options && ['ed25519', 'sr25519'].includes(options.type || 'undefined'), `Expected a keyring type of either 'ed25519' or 'sr25519', found '${options.type}`);
+    assert(options && ['ecdsa', 'ed25519', 'sr25519'].includes(options.type || 'undefined'), `Expected a keyring type of either 'ed25519', 'sr25519' or 'ecdsa', found '${options.type}`);

    this.#pairs = new Pairs();
    this.#ss58 = options.ss58Format;
@@ -62,7 +62,7 @@ export default class Keyring implements KeyringInstance {
  }

  /**
-   * @description Returns the type of the keyring, either ed25519 of sr25519
+   * @description Returns the type of the keyring, ed25519, sr25519 or ecdsa
   */
  public get type (): KeypairType {
    return this.#type;
@@ -84,10 +84,10 @@ export default class Keyring implements KeyringInstance {
   * of an account backup), and then generates a keyring pair from them that it passes to
   * `addPair` to stores in a keyring pair dictionary the public key of the generated pair as a key and the pair as the associated value.
   */
-  public addFromAddress (address: string | Uint8Array, meta: KeyringPair$Meta = {}, encoded: Uint8Array | null = null, type: KeypairType = this.type, ignoreChecksum?: boolean): KeyringPair {
+  public addFromAddress (address: string | Uint8Array, meta: KeyringPair$Meta = {}, encoded: Uint8Array | null = null, type: KeypairType = this.type, ignoreChecksum?: boolean, encType?: KeyringPair$JsonEncodingTypes[]): KeyringPair {
    const publicKey = this.decodeAddress(address, ignoreChecksum);

-    return this.addPair(createPair({ toSS58: this.encodeAddress, type }, { publicKey, secretKey: new Uint8Array(64) }, meta, encoded));
+    return this.addPair(createPair({ toSS58: this.encodeAddress, type }, { publicKey, secretKey: new Uint8Array() }, meta, encoded, encType));
  }

  /**
@@ -97,12 +97,15 @@ export default class Keyring implements KeyringInstance {
   * of an account backup), and then generates a keyring pair from it that it passes to
   * `addPair` to stores in a keyring pair dictionary the public key of the generated pair as a key and the pair as the associated value.
   */
-  public addFromJson ({ address, encoded, encoding: { content, version }, meta }: KeyringPair$Json, ignoreChecksum?: boolean): KeyringPair {
-    const type = version === '0' || !Array.isArray(content)
+  public addFromJson ({ address, encoded, encoding: { content, type, version }, meta }: KeyringPair$Json, ignoreChecksum?: boolean): KeyringPair {
+    const cryptoType = version === '0' || !Array.isArray(content)
      ? this.type
      : content[1];
+    const encType = !Array.isArray(type)
+      ? [type]
+      : type;

-    return this.addFromAddress(address, meta, hexToU8a(encoded), type, ignoreChecksum);
+    return this.addFromAddress(address, meta, isHex(encoded) ? hexToU8a(encoded) : base64Decode(encoded), cryptoType, ignoreChecksum, encType);
  }

  /**
@@ -125,9 +128,11 @@ export default class Keyring implements KeyringInstance {
   * `addPair` to store in a keyring pair dictionary the public key of the generated pair as a key and the pair as the associated value.
   */
  public addFromSeed (seed: Uint8Array, meta: KeyringPair$Meta = {}, type: KeypairType = this.type): KeyringPair {
-    const keypair = type === 'sr25519'
-      ? schnorrkelFromSeed(seed)
-      : naclFromSeed(seed);
+    const keypair = {
+      ecdsa: (): Keypair => secp256k1FromSeed(seed),
+      ed25519: (): Keypair => naclFromSeed(seed),
+      sr25519: (): Keypair => schnorrkelFromSeed(seed)
+    }[type]();

    return this.addPair(createPair({ toSS58: this.encodeAddress, type }, keypair, meta, null));
  }
@@ -153,8 +158,8 @@ export default class Keyring implements KeyringInstance {
    const suri = _suri.startsWith('//')
      ? `${DEV_PHRASE}${_suri}`
      : _suri;
-    const { password, phrase, path } = keyExtractSuri(suri);
-    let seed;
+    const { password, path, phrase } = keyExtractSuri(suri);
+    let seed: Uint8Array;

    if (isHex(phrase, 256)) {
      seed = hexToU8a(phrase);
@@ -175,10 +180,12 @@ export default class Keyring implements KeyringInstance {
      }
    }

-    const keypair = type === 'sr25519'
-      ? schnorrkelFromSeed(seed)
-      : naclFromSeed(seed);
-    const derived = keyFromPath(keypair, path, type);
+    const keypair = {
+      ecdsa: (): Keypair => secp256k1FromSeed(seed),
+      ed25519: (): Keypair => naclFromSeed(seed),
+      sr25519: (): Keypair => schnorrkelFromSeed(seed)
+    };
+    const derived = keyFromPath(keypair[type](), path, type);

    return createPair({ toSS58: this.encodeAddress, type }, derived, meta, null);
  }
@@ -187,8 +194,8 @@ export default class Keyring implements KeyringInstance {
   * @name encodeAddress
   * @description Encodes the input into an ss58 representation
   */
-  public encodeAddress = (key: Uint8Array | string, ss58Format?: number): string => {
-    return encodeAddress(key, ss58Format || this.#ss58);
+  public encodeAddress = (address: Uint8Array | string, ss58Format?: number): string => {
+    return encodeAddress(address, isUndefined(ss58Format) ? this.#ss58 : ss58Format);
  }

  /**
@@ -2,11 +2,13 @@
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.

-import { assert, stringToU8a, u8aFixLength } from '@polkadot/util';
-import { naclDecrypt } from '@polkadot/util-crypto';
+import { KeyringPair$JsonEncodingTypes } from '../types';
 import { PairInfo } from './types';

-import { NONCE_LENGTH, PKCS8_DIVIDER, PKCS8_HEADER, PUB_LENGTH, SEC_LENGTH, SEED_LENGTH } from './defaults';
+import { assert, stringToU8a, u8aFixLength } from '@polkadot/util';
+import { naclDecrypt, scryptEncode, scryptFromU8a } from '@polkadot/util-crypto';
+
+import { NONCE_LENGTH, PKCS8_DIVIDER, PKCS8_HEADER, PUB_LENGTH, SEC_LENGTH, SEED_LENGTH, SCRYPT_LENGTH } from './defaults';

 const SEED_OFFSET = PKCS8_HEADER.length;

@@ -41,18 +43,32 @@ function decodePkcs8 (encoded: Uint8Array): DecodeResult {
  };
 }

-export default function decode (passphrase?: string, encrypted?: Uint8Array | null): DecodeResult {
+export default function decode (passphrase?: string, encrypted?: Uint8Array | null, encType: KeyringPair$JsonEncodingTypes[] = ['scrypt', 'xsalsa20-poly1305']): DecodeResult {
  assert(encrypted, 'No encrypted data available to decode');
+  assert(passphrase || !encType.includes('xsalsa20-poly1305'), 'Password required to decode encypted data');

-  const encoded = passphrase
-    ? naclDecrypt(
+  let encoded: Uint8Array | null = encrypted;
+
+  if (passphrase) {
+    let password: Uint8Array;
+
+    if (encType.includes('scrypt')) {
+      const { params, salt } = scryptFromU8a(encrypted);
+
+      password = scryptEncode(passphrase, salt, params).password;
+      encrypted = encrypted.subarray(SCRYPT_LENGTH);
+    } else {
+      password = stringToU8a(passphrase);
+    }
+
+    encoded = naclDecrypt(
      encrypted.subarray(NONCE_LENGTH),
      encrypted.subarray(0, NONCE_LENGTH),
-      u8aFixLength(stringToU8a(passphrase), 256, true)
-    )
-    : encrypted;
+      u8aFixLength(password, 256, true)
+    );
+  }

-  assert(encoded, 'Unable to unencrypt using the supplied passphrase');
+  assert(encoded, 'Unable to decode using the supplied passphrase');

  return decodePkcs8(encoded);
 }
@@ -6,14 +6,18 @@ const NONCE_LENGTH = 24;
 const PKCS8_DIVIDER = new Uint8Array([161, 35, 3, 33, 0]);
 const PKCS8_HEADER = new Uint8Array([48, 83, 2, 1, 1, 48, 5, 6, 3, 43, 101, 112, 4, 34, 4, 32]);
 const PUB_LENGTH = 32;
+const SALT_LENGTH = 32;
 const SEC_LENGTH = 64;
 const SEED_LENGTH = 32;
+const SCRYPT_LENGTH = SALT_LENGTH + (3 * 4);

 export {
  NONCE_LENGTH,
  PKCS8_DIVIDER,
  PKCS8_HEADER,
  PUB_LENGTH,
+  SALT_LENGTH,
  SEC_LENGTH,
-  SEED_LENGTH
+  SEED_LENGTH,
+  SCRYPT_LENGTH
 };
@@ -3,10 +3,10 @@
 // of the Apache-2.0 license. See the LICENSE file for details.

 import testingPairs from '../testingPairs';
-import { PKCS8_DIVIDER, PKCS8_HEADER, PUB_LENGTH, SEC_LENGTH } from './defaults';
+import { PKCS8_DIVIDER, PKCS8_HEADER, NONCE_LENGTH, PUB_LENGTH, SCRYPT_LENGTH, SEC_LENGTH } from './defaults';

 const PKCS8_LENGTH = PKCS8_DIVIDER.length + PKCS8_HEADER.length + PUB_LENGTH + SEC_LENGTH;
-const ENCODED_LENGTH = 157;
+const ENCODED_LENGTH = 16 + PKCS8_LENGTH + NONCE_LENGTH + SCRYPT_LENGTH;

 const keyring = testingPairs({ type: 'ed25519' }, false);

@@ -4,8 +4,8 @@

 import { PairInfo } from './types';

-import { stringToU8a, u8aConcat, u8aFixLength, assert } from '@polkadot/util';
-import { naclEncrypt } from '@polkadot/util-crypto';
+import { u8aConcat, assert } from '@polkadot/util';
+import { naclEncrypt, scryptEncode, scryptToU8a } from '@polkadot/util-crypto';

 import { PKCS8_DIVIDER, PKCS8_HEADER } from './defaults';

@@ -23,7 +23,8 @@ export default function encode ({ publicKey, secretKey }: PairInfo, passphrase?:
    return encoded;
  }

-  const { encrypted, nonce } = naclEncrypt(encoded, u8aFixLength(stringToU8a(passphrase), 256, true));
+  const { params, password, salt } = scryptEncode(passphrase);
+  const { encrypted, nonce } = naclEncrypt(encoded, password.subarray(0, 32));

-  return u8aConcat(nonce, encrypted);
+  return u8aConcat(scryptToU8a(salt, params), nonce, encrypted);
 }
@@ -80,6 +80,7 @@ describe('pair', (): void => {
    const encoded = keyring.alice.encodePkcs8(PASS);

    const pair = createPair({ toSS58, type: 'sr25519' }, { publicKey: keyring.alice.publicKey });
+
    pair.decodePkcs8(PASS, encoded);

    expect(pair.isLocked).toEqual(false);
@@ -93,4 +94,13 @@ describe('pair', (): void => {
    expect(stash.publicKey).toEqual(PAIRS[1].publicKey);
    expect(soft.address).toEqual('5ECQNn7UueWHPFda5qUi4fTmTtyCnPvGnuoyVVSj5CboJh9J');
  });
+
+  it('fails to sign when locked', (): void => {
+    const pair = createPair({ toSS58, type: 'sr25519' }, { publicKey: keyring.alice.publicKey });
+
+    expect(pair.isLocked).toEqual(true);
+    expect((): Uint8Array =>
+      pair.sign(new Uint8Array([0]))
+    ).toThrow('Cannot sign with a locked key pair');
+  });
 });
@@ -3,11 +3,11 @@
 // of the Apache-2.0 license. See the LICENSE file for details.

 import { Keypair, KeypairType } from '@polkadot/util-crypto/types';
-import { KeyringPair, KeyringPair$Json, KeyringPair$Meta, SignOptions } from '../types';
+import { KeyringPair, KeyringPair$Json, KeyringPair$JsonEncodingTypes, KeyringPair$Meta, SignOptions } from '../types';
 import { PairInfo } from './types';

-import { u8aConcat, assert } from '@polkadot/util';
-import { keyExtractPath, keyFromPath, naclKeypairFromSeed as naclFromSeed, naclSign, naclVerify, schnorrkelKeypairFromSeed as schnorrkelFromSeed, schnorrkelSign, schnorrkelVerify } from '@polkadot/util-crypto';
+import { assert, u8aConcat } from '@polkadot/util';
+import { keyExtractPath, keyFromPath, naclKeypairFromSeed as naclFromSeed, naclSign, naclVerify, schnorrkelKeypairFromSeed as schnorrkelFromSeed, schnorrkelSign, schnorrkelVerify, secp256k1KeypairFromSeed as secp256k1FromSeed, secp256k1Sign, secp256k1Verify, blake2AsU8a } from '@polkadot/util-crypto';

 import decode from './decode';
 import encode from './encode';
@@ -21,45 +21,64 @@ interface Setup {
 const SIG_TYPE_NONE = new Uint8Array();
 const SIG_TYPE_ED25519 = new Uint8Array([0]);
 const SIG_TYPE_SR25519 = new Uint8Array([1]);
-// const SIG_TYPE_ECDSA = new Uint8Array([2]);
+const SIG_TYPE_ECDSA = new Uint8Array([2]);

 function isEmpty (u8a: Uint8Array): boolean {
  return u8a.reduce((count, u8): number => count + u8, 0) === 0;
 }

-function isSr25519 (type: KeypairType): boolean {
-  return type === 'sr25519';
-}
-
 function fromSeed (type: KeypairType, seed: Uint8Array): Keypair {
-  return isSr25519(type)
-    ? schnorrkelFromSeed(seed)
-    : naclFromSeed(seed);
+  return {
+    ecdsa: (): Keypair => secp256k1FromSeed(seed),
+    ed25519: (): Keypair => naclFromSeed(seed),
+    sr25519: (): Keypair => schnorrkelFromSeed(seed)
+  }[type]();
 }

 function multiSignaturePrefix (type: KeypairType): Uint8Array {
-  return isSr25519(type)
-    ? SIG_TYPE_SR25519
-    : SIG_TYPE_ED25519;
+  return {
+    ecdsa: SIG_TYPE_ECDSA,
+    ed25519: SIG_TYPE_ED25519,
+    sr25519: SIG_TYPE_SR25519
+  }[type];
 }

 function sign (type: KeypairType, message: Uint8Array, pair: Partial<Keypair>, { withType = false }: SignOptions = {}): Uint8Array {
+  const signature = {
+    ecdsa: (): Uint8Array => secp256k1Sign(message, pair),
+    ed25519: (): Uint8Array => naclSign(message, pair),
+    sr25519: (): Uint8Array => schnorrkelSign(message, pair)
+  }[type]();
+
  return u8aConcat(
    // for multi-signatures, i.e. with indicator, append the signature type as per
    // the MultiSignature enum
    withType
      ? multiSignaturePrefix(type)
      : SIG_TYPE_NONE,
-    isSr25519(type)
-      ? schnorrkelSign(message, pair)
-      : naclSign(message, pair)
+    signature
  );
 }

 function verify (type: KeypairType, message: Uint8Array, signature: Uint8Array, publicKey: Uint8Array): boolean {
-  return isSr25519(type)
-    ? schnorrkelVerify(message, signature, publicKey)
-    : naclVerify(message, signature, publicKey);
+  return {
+    ecdsa: (): boolean => secp256k1Verify(message, signature, blake2AsU8a(publicKey, 256)),
+    ed25519: (): boolean => naclVerify(message, signature, publicKey),
+    sr25519: (): boolean => schnorrkelVerify(message, signature, publicKey)
+  }[type]();
+}
+
+function getAddress (type: KeypairType, publicKey: Uint8Array): Uint8Array {
+  if (type === 'ecdsa' && publicKey.length > 32) {
+    return blake2AsU8a(publicKey, 256);
+  } else {
+    return publicKey;
+  }
+}
+
+// Not 100% correct, since it can be a Uint8Array, but an invalid one - just say "undefined" is anything non-valid
+function isLocked (secretKey?: Uint8Array): secretKey is undefined {
+  return !secretKey || secretKey.length === 0 || isEmpty(secretKey);
 }

 /**
@@ -93,25 +112,33 @@ function verify (type: KeypairType, message: Uint8Array, signature: Uint8Array,
 * an `encoded` property that is assigned with the encoded public key in hex format, and an `encoding`
 * property that indicates whether the public key value of the `encoded` property is encoded or not.
 */
-export default function createPair ({ toSS58, type }: Setup, { publicKey, secretKey }: PairInfo, meta: KeyringPair$Meta = {}, encoded: Uint8Array | null = null): KeyringPair {
+export default function createPair ({ toSS58, type }: Setup, { publicKey, secretKey }: PairInfo, meta: KeyringPair$Meta = {}, encoded: Uint8Array | null = null, encTypes?: KeyringPair$JsonEncodingTypes[]): KeyringPair {
+  const recode = (passphrase?: string): Uint8Array => {
+    encoded = encode({ publicKey, secretKey }, passphrase); // re-encode, latest version
+    encTypes = undefined; // swap to defaults, latest version follows
+
+    return encoded;
+  };
+
  return {
    get address (): string {
-      return toSS58(publicKey);
+      return toSS58(getAddress(type, publicKey));
+    },
+    get isLocked (): boolean {
+      return isLocked(secretKey);
    },
    get meta (): KeyringPair$Meta {
      return meta;
    },
-    get isLocked (): boolean {
-      return !secretKey || secretKey.length === 0 || isEmpty(secretKey);
-    },
    get publicKey (): Uint8Array {
      return publicKey;
    },
    get type (): KeypairType {
      return type;
    },
-    decodePkcs8: (passphrase?: string, _encoded?: Uint8Array | null): void => {
-      const decoded = decode(passphrase, _encoded || encoded);
+    // eslint-disable-next-line sort-keys
+    decodePkcs8: (passphrase?: string, userEncoded?: Uint8Array | null): void => {
+      const decoded = decode(passphrase, userEncoded || encoded, encTypes);

      if (decoded.secretKey.length === 64) {
        publicKey = decoded.publicKey;
@@ -124,25 +151,28 @@ export default function createPair ({ toSS58, type }: Setup, { publicKey, secret
      }
    },
    derive: (suri: string, meta?: KeyringPair$Meta): KeyringPair => {
-      assert(secretKey, 'Cannot derive on a locked keypair');
+      assert(!isLocked(secretKey), 'Cannot derive on a locked keypair');

      const { path } = keyExtractPath(suri);
-      const derived = keyFromPath({ publicKey, secretKey: secretKey }, path, type);
+      const derived = keyFromPath({ publicKey, secretKey }, path, type);

      return createPair({ toSS58, type }, derived, meta, null);
    },
    encodePkcs8: (passphrase?: string): Uint8Array =>
-      encode({ publicKey, secretKey }, passphrase),
+      recode(passphrase),
    lock: (): void => {
      secretKey = new Uint8Array(0);
    },
    setMeta: (additional: KeyringPair$Meta): void => {
      meta = { ...meta, ...additional };
    },
-    sign: (message: Uint8Array, options?: SignOptions): Uint8Array =>
-      sign(type, message, { publicKey, secretKey }, options),
+    sign: (message: Uint8Array, options?: SignOptions): Uint8Array => {
+      assert(!isLocked(secretKey), 'Cannot sign with a locked key pair');
+
+      return sign(type, message, { publicKey, secretKey }, options);
+    },
    toJson: (passphrase?: string): KeyringPair$Json =>
-      toJson(type, { meta, publicKey }, encode({ publicKey, secretKey }, passphrase), !!passphrase),
+      toJson(type, { address: toSS58(getAddress(type, publicKey)), meta }, recode(passphrase), !!passphrase),
    verify: (message: Uint8Array, signature: Uint8Array): boolean =>
      verify(type, message, signature, publicKey)
  };
@@ -25,7 +25,6 @@ const json: KeyringPair$Json = {

 export default function everybody (): KeyringPair {
  const pair: KeyringPair = {
-    type: 'ed25519',
    address,
    // eslint-disable-next-line @typescript-eslint/no-unused-vars
    decodePkcs8: (passphrase?: string, encoded?: Uint8Array): void =>
@@ -36,11 +35,11 @@ export default function everybody (): KeyringPair {
    // eslint-disable-next-line @typescript-eslint/no-unused-vars
    encodePkcs8: (passphrase?: string): Uint8Array =>
      new Uint8Array(0),
-    meta,
    isLocked: true,
    lock: (): void => {
      // no locking, it is always locked
    },
+    meta,
    publicKey,
    // eslint-disable-next-line @typescript-eslint/no-unused-vars
    setMeta: (meta: KeyringPair$Meta): void =>
@@ -51,6 +50,7 @@ export default function everybody (): KeyringPair {
    // eslint-disable-next-line @typescript-eslint/no-unused-vars
    toJson: (passphrase?: string): KeyringPair$Json =>
      json,
+    type: 'ed25519',
    // eslint-disable-next-line @typescript-eslint/no-unused-vars
    verify: (message: Uint8Array, signature: Uint8Array): boolean =>
      false
@@ -12,15 +12,15 @@ describe('toJson', (): void => {
      keyring.alice.toJson()
    ).toMatchObject({
      address: '5GoKvZWG5ZPYL1WUovuHW3zJBWBP5eT8CbqjdRY4Q6iMaQua',
-      encoded: '0x3053020101300506032b657004220420416c696365202020202020202020202020202020202020202020202020202020d172a74cda4c865912c32ba0a80a57ae69abae410e5ccb59dee84e2f4432db4fa123032100d172a74cda4c865912c32ba0a80a57ae69abae410e5ccb59dee84e2f4432db4f',
+      encoded: 'MFMCAQEwBQYDK2VwBCIEIEFsaWNlICAgICAgICAgICAgICAgICAgICAgICAgICAg0XKnTNpMhlkSwyugqApXrmmrrkEOXMtZ3uhOL0Qy20+hIwMhANFyp0zaTIZZEsMroKgKV65pq65BDlzLWd7oTi9EMttP',
      encoding: {
        content: ['pkcs8', 'ed25519'],
-        type: 'none',
-        version: '2'
+        type: ['none'],
+        version: '3'
      },
      meta: {
-        name: 'alice',
-        isTesting: true
+        isTesting: true,
+        name: 'alice'
      }
    });
  });
@@ -28,13 +28,13 @@ describe('toJson', (): void => {
  it('creates an encoded output with passphrase', (): void => {
    const json = keyring.alice.toJson('testing');

-    expect(json.encoded).toHaveLength(316);
+    expect(json.encoded).toHaveLength(268);
    expect(json).toMatchObject({
      address: '5GoKvZWG5ZPYL1WUovuHW3zJBWBP5eT8CbqjdRY4Q6iMaQua',
      encoding: {
        content: ['pkcs8', 'ed25519'],
-        type: 'xsalsa20-poly1305',
-        version: '2'
+        type: ['scrypt', 'xsalsa20-poly1305'],
+        version: '3'
      }
    });
  });
@@ -5,23 +5,26 @@
 import { KeypairType } from '@polkadot/util-crypto/types';
 import { KeyringPair$Json, KeyringPair$Meta } from '../types';

-import { u8aToHex } from '@polkadot/util';
-import { encodeAddress } from '@polkadot/util-crypto';
+import { base64Encode } from '@polkadot/util-crypto';

-type PairStateJson = KeyringPair$Meta & {
-  publicKey: Uint8Array;
-};
+interface PairStateJson {
+  address: string;
+  meta: KeyringPair$Meta;
+}

-export default function toJson (type: KeypairType, { publicKey, meta }: PairStateJson, encoded: Uint8Array, isEncrypted: boolean): KeyringPair$Json {
+// version 2 - nonce, encoded (previous)
+// version 3 - salt, nonce, encoded
+
+export default function toJson (type: KeypairType, { address, meta }: PairStateJson, encoded: Uint8Array, isEncrypted: boolean): KeyringPair$Json {
  return {
-    address: encodeAddress(publicKey),
-    encoded: u8aToHex(encoded),
+    address,
+    encoded: base64Encode(encoded),
    encoding: {
      content: ['pkcs8', type],
      type: isEncrypted
-        ? 'xsalsa20-poly1305'
-        : 'none',
-      version: '2'
+        ? ['scrypt', 'xsalsa20-poly1305']
+        : ['none'],
+      version: '3'
    },
    meta
  };
@@ -13,7 +13,7 @@ export default class Pairs implements KeyringPairs {
  readonly #map: KeyringPairMap = {};

  public add (pair: KeyringPair): KeyringPair {
-    this.#map[pair.publicKey.toString()] = pair;
+    this.#map[decodeAddress(pair.address).toString()] = pair;

    return pair;
  }
@@ -23,44 +23,44 @@ interface PairDef {
 // adding the keys when only the keyring is used.
 export const PAIRS: PairDef[] = [
  {
-    seed: 'Alice',
+    publicKey: hexToU8a('0xd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d'),
    secretKey: hexToU8a('0x98319d4ff8a9508c4bb0cf0b5a78d760a0b2082c02775e6e82370816fedfff48925a225d97aa00682d6a59b95b18780c10d7032336e88f3442b42361f4a66011'),
-    publicKey: hexToU8a('0xd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d')
+    seed: 'Alice'
  },
  {
-    seed: 'Alice//stash',
+    publicKey: hexToU8a('0xbe5ddb1579b72e84524fc29e78609e3caf42e85aa118ebfe0b0ad404b5bdd25f'),
    secretKey: hexToU8a('0xe8da6c9d810e020f5e3c7f5af2dea314cbeaa0d72bc6421e92c0808a0c584a6046ab28e97c3ffc77fe12b5a4d37e8cd4afbfebbf2391ffc7cb07c0f38c023efd'),
-    publicKey: hexToU8a('0xbe5ddb1579b72e84524fc29e78609e3caf42e85aa118ebfe0b0ad404b5bdd25f')
+    seed: 'Alice//stash'
  },
  {
-    seed: 'Bob',
+    publicKey: hexToU8a('0x8eaf04151687736326c9fea17e25fc5287613693c912909cb226aa4794f26a48'),
    secretKey: hexToU8a('0x081ff694633e255136bdb456c20a5fc8fed21f8b964c11bb17ff534ce80ebd5941ae88f85d0c1bfc37be41c904e1dfc01de8c8067b0d6d5df25dd1ac0894a325'),
-    publicKey: hexToU8a('0x8eaf04151687736326c9fea17e25fc5287613693c912909cb226aa4794f26a48')
+    seed: 'Bob'
  },
  {
-    seed: 'Bob//stash',
+    publicKey: hexToU8a('0xfe65717dad0447d715f660a0a58411de509b42e6efb8375f562f58a554d5860e'),
    secretKey: hexToU8a('0xc006507cdfc267a21532394c49ca9b754ca71de21e15a1cdf807c7ceab6d0b6c3ed408d9d35311540dcd54931933e67cf1ea10d46f75408f82b789d9bd212fde'),
-    publicKey: hexToU8a('0xfe65717dad0447d715f660a0a58411de509b42e6efb8375f562f58a554d5860e')
+    seed: 'Bob//stash'
  },
  {
-    seed: 'Charlie',
+    publicKey: hexToU8a('0x90b5ab205c6974c9ea841be688864633dc9ca8a357843eeacf2314649965fe22'),
    secretKey: hexToU8a('0xa8f2d83016052e5d6d77b2f6fd5d59418922a09024cda701b3c34369ec43a7668faf12ff39cd4e5d92bb773972f41a7a5279ebc2ed92264bed8f47d344f8f18c'),
-    publicKey: hexToU8a('0x90b5ab205c6974c9ea841be688864633dc9ca8a357843eeacf2314649965fe22')
+    seed: 'Charlie'
  },
  {
-    seed: 'Dave',
+    publicKey: hexToU8a('0x306721211d5404bd9da88e0204360a1a9ab8b87c66c1bc2fcdd37f3c2222cc20'),
    secretKey: hexToU8a('0x20e05482ca4677e0edbc58ae9a3a59f6ed3b1a9484ba17e64d6fe8688b2b7b5d108c4487b9323b98b11fe36cb301b084e920f7b7895536809a6d62a451b25568'),
-    publicKey: hexToU8a('0x306721211d5404bd9da88e0204360a1a9ab8b87c66c1bc2fcdd37f3c2222cc20')
+    seed: 'Dave'
  },
  {
-    seed: 'Eve',
+    publicKey: hexToU8a('0xe659a7a1628cdd93febc04a4e0646ea20e9f5f0ce097d9a05290d4a9e054df4e'),
    secretKey: hexToU8a('0x683576abfd5dc35273e4264c23095a1bf21c14517bece57c7f0cc5c0ed4ce06a3dbf386b7828f348abe15d76973a72009e6ef86a5c91db2990cb36bb657c6587'),
-    publicKey: hexToU8a('0xe659a7a1628cdd93febc04a4e0646ea20e9f5f0ce097d9a05290d4a9e054df4e')
+    seed: 'Eve'
  },
  {
-    seed: 'Ferdie',
+    publicKey: hexToU8a('0x1cbd2d43530a44705ad088af313e18f80b53ef16b36177cd4b77b846f2a5f07c'),
    secretKey: hexToU8a('0xb835c20f450079cf4f513900ae9faf8df06ad86c681884122c752a4b2bf74d4303e4f21bc6cc62bb4eeed5a9cce642c25e2d2ac1464093b50f6196d78e3a7426'),
-    publicKey: hexToU8a('0x1cbd2d43530a44705ad088af313e18f80b53ef16b36177cd4b77b846f2a5f07c')
+    seed: 'Ferdie'
  }
 ];

@@ -1,4 +1,3 @@
-/* eslint-disable @typescript-eslint/class-name-casing */
 // Copyright 2017-2020 @polkadot/keyring authors & contributors
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.
@@ -11,16 +10,15 @@ export interface KeyringOptions {
  type?: KeypairType;
 }

-export interface KeyringPair$Meta {
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  [index: string]: any;
-}
+export type KeyringPair$Meta = Record<string, unknown>;

-export type KeyringPair$JsonVersion = '0' | '1' | '2';
+export type KeyringPair$JsonVersion = '0' | '1' | '2' | '3';
+
+export type KeyringPair$JsonEncodingTypes = 'none' | 'scrypt' | 'xsalsa20-poly1305';

 export interface KeyringPair$JsonEncoding {
  content: ['pkcs8', KeypairType];
-  type: 'xsalsa20-poly1305' | 'none';
+  type: KeyringPair$JsonEncodingTypes | KeyringPair$JsonEncodingTypes[];
  version: KeyringPair$JsonVersion;
 }

@@ -1,6 +1,6 @@
 {
  "name": "@polkadot/util-crypto",
-  "version": "2.7.1",
+  "version": "3.0.1",
  "description": "A collection of useful crypto utilities for @polkadot",
  "main": "index.js",
  "keywords": [
@@ -25,25 +25,25 @@
  },
  "homepage": "https://github.com/polkadot-js/common/tree/master/packages/util-crypto#readme",
  "dependencies": {
-    "@babel/runtime": "^7.9.2",
-    "@polkadot/util": "2.7.1",
+    "@babel/runtime": "^7.10.5",
+    "@polkadot/util": "3.0.1",
    "@polkadot/wasm-crypto": "^1.2.1",
    "base-x": "^3.0.8",
    "bip39": "^3.0.2",
    "blakejs": "^1.1.0",
-    "bn.js": "^5.1.1",
-    "bs58": "^4.0.1",
-    "elliptic": "^6.5.2",
+    "bn.js": "^5.1.2",
+    "elliptic": "^6.5.3",
    "js-sha3": "^0.8.0",
-    "pbkdf2": "^3.0.17",
+    "pbkdf2": "^3.1.1",
+    "scryptsy": "^2.1.0",
    "tweetnacl": "^1.0.3",
    "xxhashjs": "^0.2.2"
  },
  "devDependencies": {
    "@types/bn.js": "^4.11.6",
-    "@types/bs58": "^4.0.1",
    "@types/elliptic": "^6.4.12",
-    "@types/pbkdf2": "^3.0.0",
-    "@types/xxhashjs": "^0.2.1"
+    "@types/pbkdf2": "^3.1.0",
+    "@types/scryptsy": "^2.0.0",
+    "@types/xxhashjs": "^0.2.2"
  }
 }
@@ -17,6 +17,12 @@ describe('checkAddress', (): void => {
    ).toEqual([true, null]);
  });

+  it('fails when an invalid base58 character is supplied', (): void => {
+    expect(
+      checkAddress('5EnxIUmEbw8DkENKiYuZ1DwQuMoB2UWEQJZZXrTsxoz7SpgG', 2)
+    ).toEqual([false, 'Invalid base58 character "I" (0x49) at index 4']);
+  });
+
  it('fails with invalid prefix when checking Substrate against Kusama prefix', (): void => {
    expect(
      checkAddress('5EnxxUmEbw8DkENKiYuZ1DwQuMoB2UWEQJZZXrTsxoz7SpgG', 2)
@@ -4,13 +4,24 @@

 import { Prefix } from './types';

-import bs58 from 'bs58';
-
+import base58Decode from '../base58/decode';
 import checkChecksum from './checkChecksum';
 import defaults from './defaults';

+/**
+ * @name checkAddress
+ * @summary Validates an ss58 address.
+ * @description
+ * From the provided input, validate that the address is a valid input.
+ */
 export default function check (address: string, prefix: Prefix): [boolean, string | null] {
-  const decoded = bs58.decode(address);
+  let decoded;
+
+  try {
+    decoded = base58Decode(address);
+  } catch (error) {
+    return [false, (error as Error).message];
+  }

  if (decoded[0] !== prefix) {
    return [false, `Prefix mismatch, expected ${prefix}, found ${decoded[0]}`];
@@ -94,4 +94,10 @@ describe('decode', (): void => {
      (): Uint8Array => decode('5GoKvZWG5ZPYL1WUovuHW3zJBWBP5eT8CbqjdRY4Q6iMaDwU')
    ).toThrow(/address checksum/);
  });
+
+  it('fails when invalid base58 encoded address is found', (): void => {
+    expect(
+      () => u8aToHex(decode('F3opIRbN5ZbjJNU511Kj2TLuzFcDq9BGduA9TgiECafpg29'))
+    ).toThrow(/Decoding F3opIRbN5ZbjJNU511Kj2TLuzFcDq9BGduA9TgiECafpg29: Invalid base58 character "I" \(0x49\) at index 4/);
+  });
 });
@@ -6,9 +6,9 @@ import { Prefix } from './types';

 // Original implementation: https://github.com/paritytech/polka-ui/blob/4858c094684769080f5811f32b081dd7780b0880/src/polkadot.js#L6

-import bs58 from 'bs58';
-import { assert, bufferToU8a, isHex, isU8a, u8aToU8a } from '@polkadot/util';
+import { assert, isHex, isU8a, u8aToU8a } from '@polkadot/util';

+import base58Decode from '../base58/decode';
 import checkChecksum from './checkChecksum';
 import defaults from './defaults';

@@ -18,12 +18,17 @@ export default function decode (encoded: string | Uint8Array, ignoreChecksum?: b
    return u8aToU8a(encoded);
  }

-  const decoded = bufferToU8a(bs58.decode(encoded));
-  const error = (message: string): string =>
-    `Decoding ${encoded}: ${message}`;
+  const wrapError = (message: string) => `Decoding ${encoded as string}: ${message}`;
+  let decoded;
+
+  try {
+    decoded = base58Decode(encoded);
+  } catch (error) {
+    throw new Error(wrapError((error as Error).message));
+  }

  // assert(defaults.allowedPrefix.includes(decoded[0] as Prefix), error('Invalid decoded address prefix'));
-  assert(defaults.allowedEncodedLengths.includes(decoded.length), error('Invalid decoded address length'));
+  assert(defaults.allowedEncodedLengths.includes(decoded.length), wrapError('Invalid decoded address length'));

  // TODO Unless it is an "use everywhere" prefix, throw an error
  // if (decoded[0] !== prefix) {
@@ -32,7 +37,7 @@ export default function decode (encoded: string | Uint8Array, ignoreChecksum?: b

  const [isValid, endPos] = checkChecksum(decoded);

-  assert(ignoreChecksum || isValid, error('Invalid decoded address checksum'));
+  assert(ignoreChecksum || isValid, wrapError('Invalid decoded address checksum'));

  return decoded.slice(1, endPos);
 }
@@ -2,7 +2,8 @@
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.

-import testingPairs from '../../../keyring/src/testingPairs';
+import testingPairs from '@polkadot/keyring/testingPairs';
+
 import encode from './encode';

 const keyring = testingPairs({ type: 'ed25519' }, false);
@@ -20,6 +21,12 @@ describe('encode', (): void => {
    ).toEqual('7sL6eNJj5ZGV5cn3hhV2deRUsivXfBfMH76wCALCqWj1EKzv');
  });

+  it('can re-encode an address to Polkadot live', (): void => {
+    expect(
+      encode('5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY', 0)
+    ).toEqual('15oF4uVJwmo4TdGW7VfQxNLavjCXviqxT9S1MgbjMNHr6Sp5');
+  });
+
  it('fails when non-valid publicKey provided', (): void => {
    expect(
      (): string => encode(
@@ -6,9 +6,9 @@ import { Prefix } from './types';

 // Original implementation: https://github.com/paritytech/polka-ui/blob/4858c094684769080f5811f32b081dd7780b0880/src/polkadot.js#L34

-import bs58 from 'bs58';
-import { assert, u8aConcat, u8aToBuffer } from '@polkadot/util';
+import { assert, u8aConcat } from '@polkadot/util';

+import base58Encode from '../base58/encode';
 import decode from './decode';
 import defaults from './defaults';
 import sshash from './sshash';
@@ -17,16 +17,13 @@ export default function encode (_key: Uint8Array | string, ss58Format: Prefix =
  // decode it, this means we can re-encode an address
  const key = decode(_key);

-  assert(defaults.allowedDecodedLengths.includes(key.length), `Expected a valid key to convert, with length ${defaults.allowedDecodedLengths}`);
+  assert(defaults.allowedDecodedLengths.includes(key.length), `Expected a valid key to convert, with length ${defaults.allowedDecodedLengths.join(', ')}`);

  const isPublicKey = key.length === 32;
-
  const input = u8aConcat(new Uint8Array([ss58Format]), key);
  const hash = sshash(input);

-  return bs58.encode(
-    u8aToBuffer(
-      u8aConcat(input, hash.subarray(0, isPublicKey ? 2 : 1))
-    )
+  return base58Encode(
+    u8aConcat(input, hash.subarray(0, isPublicKey ? 2 : 1))
  );
 }
@@ -0,0 +1,13 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import encodeDerivedAddress from './encodeDerived';
+
+describe('encodeDerivedAddress', (): void => {
+  it('creates a valid known derived address', (): void => {
+    expect(
+      encodeDerivedAddress('5GvUh7fGKsdBEh5XpypkfkGuf7j3vXLxH9BdxjxnJNVXRYi1', 0)
+    ).toEqual('5E5XxqPxm7QbEs6twYfp3tyjXidn4kqRrNPH4o6JK9JSLUeD');
+  });
+});
@@ -0,0 +1,21 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { Prefix } from './types';
+
+import BN from 'bn.js';
+
+import decode from './decode';
+import encode from './encode';
+import keyDerived from './keyDerived';
+
+/**
+ * @name encodeDerivedAddress
+ * @summary Creates a derived address.
+ * @description
+ * Creates a Substrate derived address based on the input address/publicKey and the index supplied.
+ */
+export default function encodeDerivedAddress (who: Uint8Array | string, index: BigInt | BN | number, ss58Format?: Prefix): string {
+  return encode(keyDerived(decode(who), index), ss58Format);
+}
@@ -0,0 +1,17 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import encodeMultiAddress from './encodeMulti';
+
+describe('encodeMultiAddress', (): void => {
+  it('creates a valid known multi address', (): void => {
+    expect(
+      encodeMultiAddress([
+        '5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY',
+        '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty',
+        '5FLSigC9HGRKVhB9FiEo4Y3koPsNmBmLJbpXg2mp1hXcS59Y'
+      ], 2)
+    ).toEqual('5DjYJStmdZ2rcqXbXGX7TW85JsrW6uG4y9MUcLq2BoPMpRA7');
+  });
+});
@@ -0,0 +1,20 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { Prefix } from './types';
+
+import BN from 'bn.js';
+
+import encode from './encode';
+import keyMulti from './keyMulti';
+
+/**
+ * @name encodeMultiAddress
+ * @summary Creates a multisig address.
+ * @description
+ * Creates a Substrate multisig address based on the input address and the required threshold.
+ */
+export default function encodeMultiAddress (who: (Uint8Array | string)[], threshold: BigInt | BN | number, ss58Format?: Prefix): string {
+  return encode(keyMulti(who, threshold), ss58Format);
+}
@@ -0,0 +1,46 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import testingPairs from '@polkadot/keyring/testingPairs';
+import { addressEq } from '.';
+
+describe('addressEq', (): void => {
+  it('returns false with non-equal', (): void => {
+    expect(
+      addressEq(
+        '5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY',
+        '5EnxxUmEbw8DkENKiYuZ1DwQuMoB2UWEQJZZXrTsxoz7SpgG'
+      )
+    ).toEqual(false);
+  });
+
+  it('returns true for equal, matching prefix', (): void => {
+    expect(
+      addressEq(
+        '5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY',
+        '5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY'
+      )
+    ).toEqual(true);
+  });
+
+  it('returns true for equal, non-matching prefix', (): void => {
+    expect(
+      addressEq(
+        '5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY',
+        '7sL6eNJj5ZGV5cn3hhV2deRUsivXfBfMH76wCALCqWj1EKzv'
+      )
+    ).toEqual(true);
+  });
+
+  it('returns true for equal, address vs publicKey', (): void => {
+    const keyring = testingPairs({ type: 'sr25519' });
+
+    expect(
+      addressEq(
+        '5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY',
+        keyring.alice.publicKey
+      )
+    ).toEqual(true);
+  });
+});
@@ -0,0 +1,25 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { u8aEq } from '@polkadot/util';
+
+import decode from './decode';
+
+/**
+ * @name addressEq
+ * @summary Compares two addresses, either in ss58, Uint8Array or hex format.
+ * @description
+ * For the input values, return true is the underlying public keys do match.
+ * @example
+ * <BR>
+ *
+ * ```javascript
+ * import { u8aEq } from '@polkadot/util';
+ *
+ * u8aEq(new Uint8Array([0x68, 0x65]), new Uint8Array([0x68, 0x65])); // true
+ * ```
+ */
+export default function addressEq (a: string | Uint8Array, b: string | Uint8Array): boolean {
+  return u8aEq(decode(a), decode(b));
+}
@@ -4,14 +4,26 @@

 import checkAddress from './check';
 import checkAddressChecksum from './checkChecksum';
+import createKeyMulti from './keyMulti';
+import createKeyDerived from './keyDerived';
 import decodeAddress from './decode';
 import encodeAddress from './encode';
+import encodeDerivedAddress from './encodeDerived';
+import encodeMultiAddress from './encodeMulti';
+import addressEq from './eq';
 import setSS58Format from './setSS58Format';
+import sortAddresses from './sort';

 export {
+  addressEq,
  checkAddress,
  checkAddressChecksum,
+  createKeyDerived,
+  createKeyMulti,
  decodeAddress,
  encodeAddress,
-  setSS58Format
+  encodeDerivedAddress,
+  encodeMultiAddress,
+  setSS58Format,
+  sortAddresses
 };
@@ -0,0 +1,23 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import createKeyDerived from './keyDerived';
+
+describe('createKeyDerived', (): void => {
+  it('matches sub accounts with Rust', (): void => {
+    expect(
+      createKeyDerived(new Uint8Array([1, 0, 0, 0, 0, 0, 0, 0]), 0)
+    ).toEqual(
+      new Uint8Array([234, 236, 28, 96, 177, 168, 152, 193, 71, 179, 226, 102, 179, 155, 188, 240, 90, 182, 21, 175, 47, 47, 250, 179, 178, 0, 81, 222, 70, 56, 52, 234])
+    );
+  });
+
+  it('creates a valid subkey', (): void => {
+    expect(
+      createKeyDerived('5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY', 1)
+    ).toEqual(
+      new Uint8Array([248, 19, 86, 209, 254, 89, 84, 48, 54, 128, 166, 239, 153, 212, 143, 34, 191, 60, 210, 50, 39, 77, 122, 71, 29, 60, 247, 198, 95, 101, 246, 83])
+    );
+  });
+});
@@ -0,0 +1,21 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import BN from 'bn.js';
+import { bnToU8a, stringToU8a, u8aConcat } from '@polkadot/util';
+
+import blake2AsU8a from '../blake2/asU8a';
+import decodeAddress from './decode';
+
+const PREFIX = stringToU8a('modlpy/utilisuba');
+
+export default function createKeyDerived (who: Uint8Array | string, index: BigInt | BN | number): Uint8Array {
+  return blake2AsU8a(
+    u8aConcat(
+      PREFIX,
+      decodeAddress(who),
+      bnToU8a(index, { bitLength: 16, isLe: true })
+    )
+  );
+}
@@ -0,0 +1,19 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { createKeyMulti } from '.';
+
+describe('createKeyMulti', (): void => {
+  it('creates a valid multikey (aligning with Rust, needs sorting)', (): void => {
+    expect(
+      createKeyMulti([
+        new Uint8Array([1, 0, 0, 0, 0, 0, 0, 0]),
+        new Uint8Array([3, 0, 0, 0, 0, 0, 0, 0]),
+        new Uint8Array([2, 0, 0, 0, 0, 0, 0, 0])
+      ], 2)
+    ).toEqual(
+      new Uint8Array([67, 151, 196, 155, 179, 207, 47, 123, 90, 2, 35, 54, 162, 111, 241, 226, 88, 148, 54, 193, 252, 195, 93, 101, 16, 5, 93, 101, 186, 186, 254, 79])
+    );
+  });
+});
@@ -0,0 +1,22 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import BN from 'bn.js';
+import { bnToU8a, compactToU8a, stringToU8a, u8aConcat, u8aSorted } from '@polkadot/util';
+
+import blake2AsU8a from '../blake2/asU8a';
+import decodeAddress from './decode';
+
+const PREFIX = stringToU8a('modlpy/utilisuba');
+
+export default function createKeyMulti (who: (Uint8Array | string)[], threshold: BigInt | BN | number): Uint8Array {
+  return blake2AsU8a(
+    u8aConcat(
+      PREFIX,
+      compactToU8a(who.length),
+      ...u8aSorted(who.map((who) => decodeAddress(who))),
+      bnToU8a(threshold, { bitLength: 16, isLe: true })
+    )
+  );
+}
@@ -0,0 +1,21 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { sortAddresses } from '.';
+
+describe('sortAddresses', (): void => {
+  it('sorts addresses by the publicKeys', (): void => {
+    expect(
+      sortAddresses([
+        '5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY',
+        '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty',
+        '5FLSigC9HGRKVhB9FiEo4Y3koPsNmBmLJbpXg2mp1hXcS59Y'
+      ])
+    ).toEqual([
+      '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty',
+      '5FLSigC9HGRKVhB9FiEo4Y3koPsNmBmLJbpXg2mp1hXcS59Y',
+      '5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY'
+    ]);
+  });
+});
@@ -0,0 +1,16 @@
+// Copyright 2017-2020 @polkadot/util authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { Prefix } from './types';
+
+import { u8aSorted } from '@polkadot/util';
+
+import decodeAddress from './decode';
+import encodeAddress from './encode';
+
+export default function sortAddresses (addresses: (Uint8Array | string)[], ss58Format?: Prefix): string[] {
+  return u8aSorted(
+    addresses.map((who) => decodeAddress(who))
+  ).map((u8a) => encodeAddress(u8a, ss58Format));
+}
@@ -7,6 +7,10 @@ export const allowedSS58 = [
  0, 1,
  // Kusama
  2, 3,
+  // Katal Chain
+  4,
+  // Kulupu
+  16, 17,
  // Dothereum
  20,
  // Substrate default
@@ -0,0 +1,15 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import baseX from 'base-x';
+
+// https://github.com/cryptocoinjs/base-x#alphabets
+const BASE58_ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz';
+
+const bs58 = baseX(BASE58_ALPHABET);
+
+export {
+  BASE58_ALPHABET,
+  bs58
+};
@@ -0,0 +1,20 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { bufferToU8a } from '@polkadot/util';
+
+import { bs58 } from './bs58';
+import validate from './validate';
+
+/**
+ * @name base58Decode
+ * @summary Decodes a base58 value.
+ * @description
+ * From the provided input, decode the base58 and return the result as an `Uint8Array`.
+ */
+export default function base58Decode (value: string): Uint8Array {
+  validate(value);
+
+  return bufferToU8a(bs58.decode(value));
+}
@@ -0,0 +1,19 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { u8aToBuffer, u8aToU8a } from '@polkadot/util';
+
+import { bs58 } from './bs58';
+
+/**
+ * @name base58Encode
+ * @summary Creates a base58 value.
+ * @description
+ * From the provided input, create the base58 and return the result as a string.
+ */
+export default function base58Encode (value: Uint8Array | string | Buffer | number[]): string {
+  return bs58.encode(
+    u8aToBuffer(u8aToU8a(value))
+  );
+}
@@ -0,0 +1,11 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+/**
+ * @summary Encode and decode base58 values
+ */
+
+export { default as base58Decode } from './decode';
+export { default as base58Encode } from './encode';
+export { default as base58Validate } from './validate';
@@ -0,0 +1,21 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { BASE58_ALPHABET } from './bs58';
+
+/**
+ * @name base58Validate
+ * @summary Validates a base58 value.
+ * @description
+ * Validates the the supplied value is valid base58
+ */
+export default function base58Validate (value: string): true {
+  for (let i = 0; i < value.length; i++) {
+    if (!BASE58_ALPHABET.includes(value[i])) {
+      throw new TypeError(`Invalid base58 character "${value[i]}" (0x${value.charCodeAt(i).toString(16)}) at index ${i}`);
+    }
+  }
+
+  return true;
+}
@@ -0,0 +1,17 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { stringToU8a } from '@polkadot/util';
+
+import { base64Decode } from '.';
+
+describe('base64Decode', (): void => {
+  it('decodes a mixed base64 utf8 string', (): void => {
+    expect(
+      base64Decode('aGVsbG8gd29ybGQg0J/RgNC40LLQtdGC0YHRgtCy0YPRjiDQvNC4IOS9oOWlvQ==')
+    ).toEqual(
+      stringToU8a('hello world Приветствую ми 你好')
+    );
+  });
+});
@@ -0,0 +1,19 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { bufferToU8a } from '@polkadot/util';
+
+import validate from './validate';
+
+/**
+ * @name base64Decode
+ * @summary Decodes a base64 value.
+ * @description
+ * From the provided input, decode the base64 and return the result as an `Uint8Array`.
+ */
+export default function base64Decode (value: string): Uint8Array {
+  validate(value);
+
+  return bufferToU8a(Buffer.from(value, 'base64'));
+}
@@ -0,0 +1,13 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { base64Encode } from '.';
+
+describe('base64Encode', (): void => {
+  it('encodes a mixed base64 utf8 string', (): void => {
+    expect(
+      base64Encode('hello world Приветствую ми 你好')
+    ).toEqual('aGVsbG8gd29ybGQg0J/RgNC40LLQtdGC0YHRgtCy0YPRjiDQvNC4IOS9oOWlvQ==');
+  });
+});
@@ -0,0 +1,15 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { u8aToBuffer, u8aToU8a } from '@polkadot/util';
+
+/**
+ * @name base64Encode
+ * @summary Creates a base64 value.
+ * @description
+ * From the provided input, create the base64 and return the result as a string.
+ */
+export default function base58Encode (value: Uint8Array | string | Buffer | number[]): string {
+  return u8aToBuffer(u8aToU8a(value)).toString('base64');
+}
@@ -0,0 +1,11 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+/**
+ * @summary Encode and decode base64 values
+ */
+
+export { default as base64Decode } from './decode';
+export { default as base64Encode } from './encode';
+export { default as base64Validate } from './validate';
@@ -0,0 +1,13 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { base64Validate } from '.';
+
+describe('base64Validate', (): void => {
+  it('decodes a mixed base64 utf8 string', (): void => {
+    expect(
+      () => base64Validate('aGVsbG8gd29ybGQg0J/RgNC40LLQtd^GC0YHRgtCy0YPRjiDQvNC4IOS9oOWlvQ==')
+    ).toThrow(/Invalid base64 encoding/);
+  });
+});
@@ -0,0 +1,17 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+/**
+ * @name base64Validate
+ * @summary Validates a base64 value.
+ * @description
+ * Validates the the supplied value is valid base64
+ */
+export default function base64Validate (value: string): true {
+  if (!(/^(?:[A-Za-z0-9+/]{2}[A-Za-z0-9+/]{2})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$/.test(value))) {
+    throw new TypeError('Invalid base64 encoding');
+  }
+
+  return true;
+}
@@ -43,4 +43,18 @@ describe('blake2AsU8a', (): void => {
      hexToU8a('0xba80a53f981c4d0d6a2797b69f12f6e94c212f14685ac4b74b12bb6fdbffa2d17d87c5392aab792dc252d5de4533cc9518d38aa8dbf1925ab92386edd4009923')
    );
  });
+
+  it('has equivalent Wasm/Js outputs on hex inputs', (): void => {
+    const a = blake2AsU8a('0x123456', 256, null, false);
+    const b = blake2AsU8a('0x123456', 256, null, true);
+
+    expect(a).toEqual(b);
+  });
+
+  it('has equivalent Wasm/Js outputs with key inputs', (): void => {
+    const a = blake2AsU8a('0x123456', 256, new Uint8Array([1, 2]), false);
+    const b = blake2AsU8a('0x123456', 256, new Uint8Array([1, 2]), true);
+
+    expect(a).toEqual(b);
+  });
 });
@@ -20,10 +20,10 @@ import { blake2b, isReady } from '@polkadot/wasm-crypto';
 * blake2AsU8a('abc'); // => [0xba, 0x80, 0xa53, 0xf98, 0x1c, 0x4d, 0x0d]
 * ```
 */
-export default function blake2AsU8a (data: Uint8Array | string, bitLength = 256, key: Uint8Array | null = null): Uint8Array {
+export default function blake2AsU8a (data: Uint8Array | string, bitLength = 256, key: Uint8Array | null = null, onlyJs = false): Uint8Array {
  const byteLength = Math.ceil(bitLength / 8);

-  return isReady()
+  return isReady() && !onlyJs
    ? blake2b(u8aToU8a(data), u8aToU8a(key), byteLength)
-    : blakejs.blake2b(data, key, byteLength);
+    : blakejs.blake2b(u8aToU8a(data), key, byteLength);
 }
@@ -10,13 +10,17 @@ export * from './init';

 // all internal exports
 export * from './address';
+export * from './base58';
+export * from './base64';
 export * from './blake2';
 export * from './keccak';
 export * from './key';
 export * from './mnemonic';
 export * from './nacl';
+export * from './pbkdf2';
 export * from './random';
 export * from './schnorrkel';
+export * from './scrypt';
 export * from './secp256k1';
 export * from './sha512';
 export * from './signature';
@@ -2,8 +2,9 @@
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.

-import BN from 'bn.js';
-import { bnToHex, compactAddLength, hexToU8a, isBn, isHex, isNumber, isString, stringToU8a } from '@polkadot/util';
+import type BN from 'bn.js';
+
+import { bnToHex, compactAddLength, hexToU8a, isBigInt, isBn, isHex, isNumber, isString, stringToU8a } from '@polkadot/util';

 import blake2AsU8a from '../blake2/asU8a';

@@ -21,10 +22,10 @@ export default class DeriveJunction {
  #isHard = false;

  public static from (value: string): DeriveJunction {
+    const result = new DeriveJunction();
    const [code, isHard] = value.startsWith('/')
      ? [value.substr(1), true]
      : [value, false];
-    const result = new DeriveJunction();

    result.soft(
      RE_NUMBER.test(code)
@@ -49,7 +50,7 @@ export default class DeriveJunction {
    return !this.#isHard;
  }

-  public hard (value: number | BN | string | Uint8Array): DeriveJunction {
+  public hard (value: number | string | BigInt | BN | Uint8Array): DeriveJunction {
    return this.soft(value).harden();
  }

@@ -59,8 +60,8 @@ export default class DeriveJunction {
    return this;
  }

-  public soft (value: number | BN | string | Uint8Array): DeriveJunction {
-    if (isNumber(value) || isBn(value)) {
+  public soft (value: number | string | BigInt | BN | Uint8Array): DeriveJunction {
+    if (isNumber(value) || isBn(value) || isBigInt(value)) {
      return this.soft(bnToHex(value, BN_OPTIONS));
    } else if (isString(value)) {
      return isHex(value)
@@ -13,7 +13,7 @@ export interface ExtractResult {
 }

 /**
- * @description Extract derivation juntions from the supplied path
+ * @description Extract derivation junctions from the supplied path
 */
 export default function keyExtractPath (derivePath: string): ExtractResult {
  const parts = derivePath.match(RE_JUNCTION);
@@ -7,13 +7,18 @@ import { KeypairType, Keypair } from '../types';
 import DeriveJunction from './DeriveJunction';
 import keyHdkdEd15519 from './hdkdEd25519';
 import keyHdkdSr15519 from './hdkdSr25519';
+import keyHdkdEcdsa from './hdkdEcdsa';
+
+const generators = {
+  ecdsa: keyHdkdEcdsa,
+  ed25519: keyHdkdEd15519,
+  sr25519: keyHdkdSr15519
+};

 export default function keyFromPath (pair: Keypair, path: DeriveJunction[], type: KeypairType): Keypair {
-  const isEd25519 = type === 'ed25519';
+  const keyHdkd = generators[type];

  return path.reduce((pair, junction): Keypair => {
-    return isEd25519
-      ? keyHdkdEd15519(pair, junction)
-      : keyHdkdSr15519(pair, junction);
+    return keyHdkd(pair, junction);
  }, pair);
 }
@@ -0,0 +1,19 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { Keypair } from '../types';
+
+import { assert } from '@polkadot/util';
+
+import secp256k1DeriveHard from '../secp256k1/deriveHard';
+import secp256k1KeypairFromSeed from '../secp256k1/keypair/fromSeed';
+import DeriveJunction from './DeriveJunction';
+
+export default function keyHdkdEcdsa (keypair: Keypair, { chainCode, isHard }: DeriveJunction): Keypair {
+  assert(isHard, 'A soft key was found in the path (and is unsupported)');
+
+  return secp256k1KeypairFromSeed(
+    secp256k1DeriveHard(keypair.secretKey.subarray(0, 32), chainCode)
+  );
+}
@@ -10,3 +10,4 @@ export { default as keyExtractSuri } from './extractSuri';
 export { default as keyFromPath } from './fromPath';
 export { default as keyHdkdEd25519 } from './hdkdEd25519';
 export { default as keyHdkdSr25519 } from './hdkdEd25519';
+export { default as keyHdkdEcdsa } from './hdkdEcdsa';
@@ -11,5 +11,4 @@ import '../polyfill';
 export { default as mnemonicGenerate } from './generate';
 export { default as mnemonicToEntropy } from './toEntropy';
 export { default as mnemonicToMiniSecret } from './toMiniSecret';
-export { default as mnemonicToSeed } from './toSeed';
 export { default as mnemonicValidate } from './validate';
@@ -1,15 +0,0 @@
-// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
-// This software may be modified and distributed under the terms
-// of the Apache-2.0 license. See the LICENSE file for details.
-
-import { u8aToHex } from '@polkadot/util';
-
-import toSeed from './toSeed';
-
-describe('mnemonicToSeed', (): void => {
-  it('generates a valid seed', (): void => {
-    expect(
-      u8aToHex(toSeed('seed sock milk update focus rotate barely fade car face mechanic mercy'))
-    ).toEqual('0x3c121e20de068083b49c2315697fb59a2d9e8643c24e5ea7628132c58969a027');
-  });
-});
@@ -1,30 +0,0 @@
-// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
-// This software may be modified and distributed under the terms
-// of the Apache-2.0 license. See the LICENSE file for details.
-
-import { mnemonicToSeedSync } from 'bip39';
-import { bufferToU8a } from '@polkadot/util';
-import { bip39ToSeed, isReady } from '@polkadot/wasm-crypto';
-
-/**
- * @name toSeed
- * @summary Creates a valid seed from a mnemonic input
- * @example
- * <BR>
- *
- * ```javascript
- * import { mnemonicGenerate, mnemonicToSeed, mnemonicValidate } from '@polkadot/util-crypto';
- *
- * const mnemonic = mnemonicGenerate(); // => string
- * const isValidMnemonic = mnemonicValidate(mnemonic); // => boolean
- *
- * if (isValidMnemonic) {
- *   console.log(`Seed generated from mnemonic: ${mnemonicToSeed(mnemonic)}`); => u8a
- * }
- * ```
- */
-export default function toSeed (mnemonic: string, password = ''): Uint8Array {
-  return isReady()
-    ? bip39ToSeed(mnemonic, password)
-    : bufferToU8a(mnemonicToSeedSync(mnemonic, password)).subarray(0, 32);
-}
@@ -13,8 +13,8 @@ describe('naclOpen', (): void => {
    const receiver = naclKeypairFromString('receiver');
    const senderBox = naclBoxKeypairFromSecret(sender.secretKey);
    const receiverBox = naclBoxKeypairFromSecret(receiver.secretKey);
+    const { nonce, sealed } = naclSeal(message, senderBox.secretKey, receiverBox.publicKey);

-    const { sealed, nonce } = naclSeal(message, senderBox.secretKey, receiverBox.publicKey);
    expect(
      naclOpen(sealed, nonce, senderBox.publicKey, receiverBox.secretKey)
    ).toEqual(
@@ -32,17 +32,20 @@ describe('naclOpen', (): void => {

    // Receiver sends encrypting public key to receive message to decrypt with his private key
    const receiverIdBoxKey = naclBoxKeypairFromSecret(receiverIdKey.secretKey);
-    console.log(`Receiver sends receiver's public key to sender ${receiverIdBoxKey.publicKey}`);
+
+    console.log(`Receiver sends receiver's public key to sender ${receiverIdBoxKey.publicKey.toString()}`);

    // Sender encrypts message to send with the public key the receiver sent and send it to receiver
    const senderIdBoxKey = naclBoxKeypairFromSecret(senderIdKey.secretKey);
    const message = new Uint8Array([1, 2, 3, 4, 5, 4, 3, 2, 1]);
-    const { sealed, nonce } = naclSeal(message, senderIdBoxKey.secretKey, receiverIdBoxKey.publicKey);
-    console.log(`Sender sends encrypted message to receiver ${sealed}, ${nonce}`);
+    const { nonce, sealed } = naclSeal(message, senderIdBoxKey.secretKey, receiverIdBoxKey.publicKey);
+
+    console.log(`Sender sends encrypted message to receiver ${sealed.toString()}, ${nonce.toString()}`);

    // Receiver opens encrypted message from the sender
    let opened = naclOpen(sealed, nonce, senderIdBoxKey.publicKey, receiverIdBoxKey.secretKey);
-    console.log(`The sealed message is ${opened}`);
+
+    console.log(`The sealed message is ${opened?.toString() || 'null'}`);

    // Oh no the Id key is hacked, derive Id key again from another index
    const senderIdKey2 = fromPath(sender, keyExtractPath('//1//1//1//2').path, 'ed25519');
@@ -50,7 +53,8 @@ describe('naclOpen', (): void => {

    // Receiver sends encrypting public key to receive message to decrypt with his private key
    const receiverIdBoxKey2 = naclBoxKeypairFromSecret(receiverIdKey2.secretKey);
-    console.log(`Receiver sends receiver's public key to sender ${receiverIdBoxKey2.publicKey}`);
+
+    console.log(`Receiver sends receiver's public key to sender ${receiverIdBoxKey2.publicKey.toString()}`);

    // Sender encrypts message to send with the public key the receiver sent and send it to receiver
    const senderIdBoxKey2 = naclBoxKeypairFromSecret(senderIdKey2.secretKey);
@@ -58,28 +62,33 @@ describe('naclOpen', (): void => {
    let ctx = naclSeal(message2, senderIdBoxKey2.secretKey, receiverIdBoxKey2.publicKey);
    const sealed2 = ctx.sealed;
    const nonce2 = ctx.nonce;
-    console.log(`Sender sends encrypted message to receiver ${sealed}, ${nonce}`);
+
+    console.log(`Sender sends encrypted message to receiver ${sealed.toString()}, ${nonce.toString()}`);

    // Receiver opens encrypted message from the sender
    opened = naclOpen(sealed2, nonce2, senderIdBoxKey2.publicKey, receiverIdBoxKey2.secretKey);
-    console.log(`The sealed message is ${opened}`);
+    console.log(`The sealed message is ${opened?.toString() || 'null'}`);

    // This time derive key for each message to send and receive
    // Receiver sends encrypting public key to receive message to decrypt with his private key
    const receiverIdBoxKey2One = naclBoxKeypairFromSecret(receiverIdBoxKey2.secretKey);
-    console.log(`Receiver sends receiver's public key to sender ${receiverIdBoxKey2One.publicKey}`);
+
+    console.log(`Receiver sends receiver's public key to sender ${receiverIdBoxKey2One.publicKey.toString()}`);

    // Sender encrypts message to send with the public key the receiver sent and send it to receiver
    const senderIdBoxKey2One = naclBoxKeypairFromSecret(senderIdBoxKey2.secretKey);
    const message3 = new Uint8Array([1, 2, 3, 4, 5, 4, 3, 2, 1]);
+
    ctx = naclSeal(message3, senderIdBoxKey2One.secretKey, receiverIdBoxKey2One.publicKey);
+
    const sealed3 = ctx.sealed;
    const nonce3 = ctx.nonce;
-    console.log(`Sender sends encrypted message to receiver ${sealed3}, ${nonce3}`);
+
+    console.log(`Sender sends encrypted message to receiver ${sealed3.toString()}, ${nonce3.toString()}`);

    // Receiver opens encrypted message from the sender
    opened = naclOpen(sealed2, nonce2, senderIdBoxKey2One.publicKey, receiverIdBoxKey2One.secretKey);
-    console.log(`The sealed message is ${opened}`);
+    console.log(`The sealed message is ${opened?.toString() || 'null'}`);
  });

  it('returns null on invalid', (): void => {
@@ -13,11 +13,12 @@ describe('naclSeal', (): void => {
    const receiverBox = naclBoxKeypairFromSecret(receiver.secretKey);
    const senderBoxSecret = senderBox.secretKey;
    const receiverBoxPublic = receiverBox.publicKey;
+
    expect(
      naclSeal(message, senderBoxSecret, receiverBoxPublic, new Uint8Array(24))
    ).toEqual({
-      sealed: new Uint8Array([137, 195, 104, 255, 67, 199, 40, 235, 148, 177, 180, 73, 239, 131, 215, 80, 61, 191, 167, 213, 152, 138, 5, 47, 135]),
-      nonce: new Uint8Array(24)
+      nonce: new Uint8Array(24),
+      sealed: new Uint8Array([137, 195, 104, 255, 67, 199, 40, 235, 148, 177, 180, 73, 239, 131, 215, 80, 61, 191, 167, 213, 152, 138, 5, 47, 135])
    });
  });
 });
@@ -27,7 +27,7 @@ interface Sealed {
 */
 export default function naclSeal (message: Uint8Array, senderBoxSecret: Uint8Array, receiverBoxPublic: Uint8Array, nonce: Uint8Array = randomAsU8a(24)): Sealed {
  return {
-    sealed: nacl.box(message, nonce, receiverBoxPublic, senderBoxSecret),
-    nonce
+    nonce,
+    sealed: nacl.box(message, nonce, receiverBoxPublic, senderBoxSecret)
  };
 }
@@ -23,7 +23,7 @@ import { isReady, ed25519Sign } from '@polkadot/wasm-crypto';
 * ```
 */
 export default function naclSign (message: Uint8Array | string, { publicKey, secretKey }: Partial<Keypair>): Uint8Array {
-  assert(secretKey, 'Expected valid secretKey');
+  assert(secretKey, 'Expected a valid secretKey');

  const messageU8a = u8aToU8a(message);

@@ -7,7 +7,7 @@ import { waitReady } from '@polkadot/wasm-crypto';

 import { naclVerify, naclKeypairFromSeed } from '.';

-describe('naclSign', (): void => {
+describe('naclVerify', (): void => {
  let publicKey: Uint8Array;
  let signature: Uint8Array;

@@ -51,4 +51,24 @@ describe('naclSign', (): void => {
      )
    ).toEqual(false);
  });
+
+  it('throws error when publicKey lengths do not match', (): void => {
+    expect(
+      () => naclVerify(
+        new Uint8Array([0x61, 0x62, 0x63, 0x64]),
+        signature,
+        new Uint8Array([1, 2])
+      )
+    ).toThrow(/Invalid publicKey/);
+  });
+
+  it('throws error when signature lengths do not match', (): void => {
+    expect(
+      () => naclVerify(
+        new Uint8Array([0x61, 0x62, 0x63, 0x64]),
+        new Uint8Array([1, 2]),
+        publicKey
+      )
+    ).toThrow(/Invalid signature/);
+  });
 });
@@ -3,14 +3,14 @@
 // of the Apache-2.0 license. See the LICENSE file for details.

 import nacl from 'tweetnacl';
-import { u8aToU8a } from '@polkadot/util';
+import { assert, u8aToU8a } from '@polkadot/util';
 import { isReady, ed25519Verify } from '@polkadot/wasm-crypto';

 /**
 * @name naclSign
 * @summary Verifies the signature on the supplied message.
 * @description
- * Verifies the `signature` on `message` with the supplied `plublicKey`. Returns `true` on sucess, `false` otherwise.
+ * Verifies the `signature` on `message` with the supplied `publicKey`. Returns `true` on sucess, `false` otherwise.
 * @example
 * <BR>
 *
@@ -22,8 +22,11 @@ import { isReady, ed25519Verify } from '@polkadot/wasm-crypto';
 */
 export default function naclVerify (message: Uint8Array | string, signature: Uint8Array | string, publicKey: Uint8Array | string): boolean {
  const messageU8a = u8aToU8a(message);
-  const signatureU8a = u8aToU8a(signature);
  const publicKeyU8a = u8aToU8a(publicKey);
+  const signatureU8a = u8aToU8a(signature);
+
+  assert(publicKeyU8a.length === 32, `Invalid publicKey, received ${publicKeyU8a.length}, expected 32`);
+  assert(signatureU8a.length === 64, `Invalid signature, received ${signatureU8a.length} bytes, expected 64`);

  return isReady()
    ? ed25519Verify(signatureU8a, messageU8a, publicKeyU8a)
@@ -0,0 +1,24 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { pbkdf2Sync } from 'pbkdf2';
+import { bufferToU8a, u8aToBuffer, u8aToU8a } from '@polkadot/util';
+import { isReady, pbkdf2 } from '@polkadot/wasm-crypto';
+
+import randomAsU8a from '../random/asU8a';
+
+interface Result {
+  password: Uint8Array;
+  rounds: number;
+  salt: Uint8Array;
+}
+
+export default function pbkdf2Encode (passphrase?: Uint8Array | string, salt = randomAsU8a(), rounds = 2048): Result {
+  const u8a = u8aToU8a(passphrase);
+  const password = isReady()
+    ? pbkdf2(u8a, salt, rounds)
+    : bufferToU8a(pbkdf2Sync(u8aToBuffer(u8a), u8aToBuffer(salt), rounds, 64));
+
+  return { password, rounds, salt };
+}
@@ -0,0 +1,5 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+export { default as pbkdf2Encode } from './encode';
@@ -14,8 +14,8 @@ import { sr25519Sign } from '@polkadot/wasm-crypto';
 * @description Returns message signature of `message`, using the supplied pair
 */
 export default function schnorrkelSign (message: Uint8Array | string, { publicKey, secretKey }: Partial<Keypair>): Uint8Array {
-  assert(publicKey?.length === 32, 'Expected valid publicKey, 32-bytes');
-  assert(secretKey?.length === 64, 'Expected valid secretKey, 64-bytes');
+  assert(publicKey?.length === 32, 'Expected a valid publicKey, 32-bytes');
+  assert(secretKey?.length === 64, 'Expected a valid secretKey, 64-bytes');

  const messageU8a = u8aToU8a(message);

@@ -29,4 +29,24 @@ describe('sign and verify', (): void => {

    expect(verify(MESSAGE, signature, pair.publicKey)).toBe(true);
  });
+
+  it('throws error when publicKey lengths do not match', (): void => {
+    expect(
+      () => verify(
+        new Uint8Array([0x61, 0x62, 0x63, 0x64]),
+        new Uint8Array(64),
+        new Uint8Array(31)
+      )
+    ).toThrow(/Invalid publicKey/);
+  });
+
+  it('throws error when signature lengths do not match', (): void => {
+    expect(
+      () => verify(
+        new Uint8Array([0x61, 0x62, 0x63, 0x64]),
+        new Uint8Array(65),
+        new Uint8Array(32)
+      )
+    ).toThrow(/Invalid signature/);
+  });
 });
@@ -4,7 +4,7 @@

 import '../polyfill';

-import { u8aToU8a } from '@polkadot/util';
+import { assert, u8aToU8a } from '@polkadot/util';
 import { sr25519Verify } from '@polkadot/wasm-crypto';

 /**
@@ -13,8 +13,11 @@ import { sr25519Verify } from '@polkadot/wasm-crypto';
 */
 export default function schnorrkelVerify (message: Uint8Array | string, signature: Uint8Array | string, publicKey: Uint8Array | string): boolean {
  const messageU8a = u8aToU8a(message);
-  const signatureU8a = u8aToU8a(signature);
  const publicKeyU8a = u8aToU8a(publicKey);
+  const signatureU8a = u8aToU8a(signature);
+
+  assert(publicKeyU8a.length === 32, `Invalid publicKey, received ${publicKeyU8a.length} bytes, expected 32`);
+  assert(signatureU8a.length === 64, `Invalid signature, received ${signatureU8a.length} bytes, expected 64`);

  return sr25519Verify(signatureU8a, messageU8a, publicKeyU8a);
 }
@@ -0,0 +1,11 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+const DEFAULT_PARAMS = {
+  N: 1 << 15,
+  p: 1,
+  r: 8
+};
+
+export { DEFAULT_PARAMS };
@@ -0,0 +1,25 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { Params } from './types';
+
+import scrypt from 'scryptsy';
+import { bufferToU8a, u8aToBuffer, u8aToU8a } from '@polkadot/util';
+
+import randomAsU8a from '../random/asU8a';
+import { DEFAULT_PARAMS } from './defaults';
+
+interface Result {
+  params: Params,
+  password: Uint8Array;
+  salt: Uint8Array;
+}
+
+export default function scryptEncode (passphrase?: Uint8Array | string, salt = randomAsU8a(), params = DEFAULT_PARAMS): Result {
+  const password = bufferToU8a(
+    scrypt(u8aToBuffer(u8aToU8a(passphrase)), u8aToBuffer(salt), params.N, params.r, params.p, 64)
+  );
+
+  return { params, password, salt };
+}
@@ -0,0 +1,29 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { Params } from './types';
+
+import { u8aToBn, assert } from '@polkadot/util';
+
+import { DEFAULT_PARAMS } from './defaults';
+
+interface Result {
+  params: Params,
+  salt: Uint8Array;
+}
+
+export default function scryptFromU8a (data: Uint8Array): Result {
+  const salt = data.subarray(0, 32);
+  const N = u8aToBn(data.subarray(32 + 0, 32 + 4), { isLe: true }).toNumber();
+  const p = u8aToBn(data.subarray(32 + 4, 32 + 8), { isLe: true }).toNumber();
+  const r = u8aToBn(data.subarray(32 + 8, 32 + 12), { isLe: true }).toNumber();
+
+  // FIXME At this moment we assume these to be fixed params, this is not a great idea since we lose flexibility
+  // and updates for greater security. However we need some protection against carefully-crafted params that can
+  // eat up CPU since these are user inputs. So we need to get very clever here, but atm we only allow the defaults
+  // and if no match, bail out
+  assert(N === DEFAULT_PARAMS.N && p === DEFAULT_PARAMS.p && r === DEFAULT_PARAMS.r, 'Invalid injected scrypt params found');
+
+  return { params: { N, p, r }, salt };
+}
@@ -0,0 +1,7 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+export { default as scryptEncode } from './encode';
+export { default as scryptFromU8a } from './fromU8a';
+export { default as scryptToU8a } from './toU8a';
@@ -0,0 +1,16 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { Params } from './types';
+
+import { bnToU8a, u8aConcat } from '@polkadot/util';
+
+export default function scryptToU8a (salt: Uint8Array, { N, p, r }: Params): Uint8Array {
+  return u8aConcat(
+    salt,
+    bnToU8a(N, { bitLength: 32, isLe: true }),
+    bnToU8a(p, { bitLength: 32, isLe: true }),
+    bnToU8a(r, { bitLength: 32, isLe: true })
+  );
+}
@@ -0,0 +1,9 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+export interface Params {
+  N: number;
+  p: number;
+  r: number;
+}
@@ -0,0 +1,13 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { compactAddLength, stringToU8a, u8aConcat } from '@polkadot/util';
+
+import blake2AsU8a from '../blake2/asU8a';
+
+const HDKD = compactAddLength(stringToU8a('Secp256k1HDKD'));
+
+export default function deriveHard (seed: Uint8Array, chainCode: Uint8Array): Uint8Array {
+  return blake2AsU8a(u8aConcat(HDKD, seed, chainCode), 256);
+}
@@ -2,4 +2,7 @@
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.

+export { default as secp256k1KeypairFromSeed } from './keypair/fromSeed';
 export { default as secp256k1Recover } from './recover';
+export { default as secp256k1Verify } from './verify';
+export { default as secp256k1Sign } from './sign';
@@ -0,0 +1,31 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { u8aToHex, hexToU8a } from '@polkadot/util';
+
+import { mnemonicToMiniSecret } from '../../mnemonic';
+import { secp256k1KeypairFromSeed } from '..';
+import tests from './testing';
+
+describe('secp256k1KeypairFromSeed', (): void => {
+  const TEST = hexToU8a('0x4380de832af797688026ce24f85204d508243f201650c1a134929e5458b7fbae');
+  const RESULT = {
+    publicKey: hexToU8a('0x03fd8c74f795ced92064b86191cb2772b1e3a0947740aa0a5a6e379592471fd85b'),
+    secretKey: hexToU8a('0x4380de832af797688026ce24f85204d508243f201650c1a134929e5458b7fbae')
+  };
+
+  it('generates a valid publicKey/secretKey pair (u8a)', (): void => {
+    expect(secp256k1KeypairFromSeed(TEST)).toEqual(RESULT);
+  });
+
+  tests.forEach(([mnemonic, secretKey, publicKey], index): void => {
+    it(`creates valid against known (${index})`, (): void => {
+      const seed = mnemonicToMiniSecret(mnemonic);
+      const pair = secp256k1KeypairFromSeed(seed);
+
+      expect(u8aToHex(pair.secretKey)).toEqual(secretKey);
+      expect(u8aToHex(pair.publicKey)).toEqual(publicKey);
+    });
+  });
+});
@@ -0,0 +1,25 @@
+// Copyright 2017-2020 @polkadot/util-crypto authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { Keypair } from '../../types';
+import { assert, hexToU8a } from '@polkadot/util';
+import elliptic from 'elliptic';
+
+const EC = elliptic.ec;
+const ec = new EC('secp256k1');
+
+/**
+ * @name secp256k1KeypairFromSeed
+ * @description Returns a object containing a `publicKey` & `secretKey` generated from the supplied seed.
+ */
+export default function secp256k1KeypairFromSeed (seed: Uint8Array): Keypair {
+  assert(seed.length === 32, 'Expected valid 32-byte private key as a seed');
+
+  const key = ec.keyFromPrivate(seed);
+
+  return {
+    publicKey: new Uint8Array(key.getPublic().encodeCompressed('array')),
+    secretKey: hexToU8a(`0x${key.getPrivate('hex')}`)
+  };
+}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Github Actions	21e9b9a033	[CI Skip] release/stable 3.0.1 skip-checks: true	2020-07-27 06:21:35 +00:00
Jaco Greeff	db61ea3077	3.0 release (#643 )	2020-07-27 08:17:28 +02:00
Github Actions	d4a3d2392e	[CI Skip] release/beta 3.0.0-beta.4 skip-checks: true	2020-07-27 06:09:08 +00:00
Jaco Greeff	88ecda706d	3.0 (#642 ) * 3.0 * Bump dev	2020-07-27 08:05:04 +02:00
Github Actions	184fb1f12e	[CI Skip] release/beta 3.0.0-beta.3 skip-checks: true	2020-07-22 15:45:42 +00:00
Reto Trinkler	91340577df	Adding 4 as address type of ss58 for Katal Chain (#639 )	2020-07-22 17:41:49 +02:00
Github Actions	36729678e2	[CI Skip] release/beta 3.0.0-beta.2 skip-checks: true	2020-07-21 07:06:23 +00:00
Jaco Greeff	1c6b4bfc34	Dev bump	2020-07-21 09:02:25 +02:00
Github Actions	bbfd175579	[CI Skip] release/beta 3.0.0-beta.1 skip-checks: true	2020-07-21 06:21:56 +00:00
Jaco Greeff	0a6bd41444	Keyring JSON with kdf (#637 ) * Keyring JSON with pbkdf2 * pbkdf2 from wasm * Encode/decode defaults adjusted * v2 decoding test * Recode refreshes defaults * Use scrypt for kdf * test conversions * Fix params * Cleanup decoding pass * Swap encoding to base64 * Update for base64 encoding * 3.0.0	2020-07-21 08:17:46 +02:00
Github Actions	ab21274c36	[CI Skip] release/beta 2.19.0-beta.2 skip-checks: true	2020-07-17 12:30:08 +00:00
Jaco Greeff	d4e6ad5553	Bump dev	2020-07-17 14:26:11 +02:00
Github Actions	49dbd757df	[CI Skip] release/beta 2.19.0-beta.1 skip-checks: true	2020-07-17 12:07:35 +00:00
Jaco Greeff	20e82cc45b	Dev bump	2020-07-17 14:03:36 +02:00
Github Actions	6a7fa80c55	[CI Skip] release/beta 2.19.0-beta.0 skip-checks: true	2020-07-17 06:39:13 +00:00
Jaco Greeff	12e34cd3e8	Bump deps (#635 )	2020-07-17 08:35:10 +02:00
Github Actions	0a598fdf92	[CI Skip] release/stable 2.18.1 skip-checks: true	2020-07-13 08:51:33 +00:00
Jaco Greeff	659b896ee7	2.18 (#634 )	2020-07-13 10:47:53 +02:00
Github Actions	7cda007a30	[CI Skip] release/beta 2.18.0-beta.3 skip-checks: true	2020-07-09 07:19:51 +00:00
Jaco Greeff	2288c4da8a	Base64 utils (#632 )	2020-07-09 09:16:24 +02:00
Github Actions	fbfc21be1c	[CI Skip] release/beta 2.18.0-beta.2 skip-checks: true	2020-07-08 13:39:52 +00:00
Jaco Greeff	787beb2aea	Add isUtf8 (#631 )	2020-07-08 15:35:43 +02:00
Github Actions	6234e16c37	[CI Skip] release/beta 2.18.0-beta.1 skip-checks: true	2020-07-08 11:58:35 +00:00
Jaco Greeff	e9cbc0a0d9	Bump deps (#630 )	2020-07-08 13:54:57 +02:00
Github Actions	166eeb8852	[CI Skip] release/beta 2.18.0-beta.0 skip-checks: true	2020-07-08 09:18:38 +00:00
Jaco Greeff	b321f92161	Add isAscii (#629 )	2020-07-08 11:14:55 +02:00
Github Actions	cf7d9d9ff5	[CI Skip] release/stable 2.17.1 skip-checks: true	2020-07-06 04:41:13 +00:00
Jaco Greeff	fb5b3c1663	2.17 (#628 )	2020-07-06 06:37:16 +02:00
Github Actions	46bbc45145	[CI Skip] release/beta 2.17.0-beta.3 skip-checks: true	2020-07-04 08:12:18 +00:00
Jaco Greeff	dc8b4a6447	Add encode{Derived, Multi}Address (#627 ) * Add encode{Derived, Multi}Address * Tests for encode* * CHANGELOG	2020-07-04 10:08:40 +02:00
Github Actions	8ec38eca4a	[CI Skip] release/beta 2.17.0-beta.2 skip-checks: true	2020-07-02 05:36:03 +00:00
Jaco Greeff	24b533689c	Handle 0 on numberToU8a (#626 ) * Handle 0 on numberToU8a * Remove old test (replaced) * base58 CHANGELOG	2020-07-02 07:32:25 +02:00
Github Actions	5421e06fc9	[CI Skip] release/beta 2.17.0-beta.1 skip-checks: true	2020-07-02 05:29:40 +00:00
Jaco Greeff	7115efd94f	Simplify base58 dependency tree (#624 )	2020-07-02 07:26:04 +02:00
Github Actions	92f88222c4	[CI Skip] release/beta 2.17.0-beta.0 skip-checks: true	2020-07-02 05:12:02 +00:00
Jaco Greeff	bc7aba71a6	Bump deps (#625 )	2020-07-02 07:08:40 +02:00
Github Actions	1d8b8b3204	[CI Skip] release/stable 2.16.1 skip-checks: true	2020-06-29 05:19:13 +00:00
Jaco Greeff	4a2e090ef8	2.16 (#623 )	2020-06-29 07:15:21 +02:00
Github Actions	8cf8d5b7e8	[CI Skip] release/beta 2.16.0-beta.0 skip-checks: true	2020-06-26 12:49:47 +00:00
Jaco Greeff	8d355ff6fc	Local base58 alphabet check for better errors (#622 ) * Local base58 alphabet check for better errors * Rewrite yarn.lock * Align error return values * Split base58{Encode, Decode} * base58Encode input types * Function names, some docs	2020-06-26 14:46:19 +02:00
Github Actions	72456bb2bd	[CI Skip] release/stable 2.15.1 skip-checks: true	2020-06-22 09:33:14 +00:00
Jaco Greeff	87f3fd2827	2.15 (#621 )	2020-06-22 11:29:33 +02:00
Github Actions	7254aab68d	[CI Skip] release/beta 2.15.0-beta.0 skip-checks: true	2020-06-19 15:39:36 +00:00
Jaco Greeff	95d7160ad0	Test for 0 prefix (#620 ) * Test for 0 prefix * Add test for keyring encodeAddress (& fix) * Test other branch of ?: check	2020-06-19 17:35:48 +02:00
Github Actions	611b1be481	[CI Skip] release/stable 2.14.1 skip-checks: true	2020-06-16 06:02:06 +00:00
Jaco Greeff	73b35fc188	2.14 (#618 )	2020-06-16 07:58:33 +02:00
Github Actions	6c30d5b9fd	[CI Skip] release/beta 2.14.0-beta.0 skip-checks: true	2020-06-08 15:58:49 +00:00
Keith Ingram	56d151fe66	Add BN consts and timeToString (#610 ) * Add BN consts and timeToString * docs * lint * fixes * lint * lint * add tests, ms * fix * test	2020-06-09 03:55:21 +12:00
Github Actions	cd20fe6c8b	[CI Skip] release/stable 2.13.1 skip-checks: true	2020-06-08 14:03:31 +00:00
Jaco Greeff	28f8ca73aa	2.13 (#616 )	2020-06-08 15:59:47 +02:00
Github Actions	f4a8bfc0c0	[CI Skip] release/beta 2.13.0-beta.5 skip-checks: true	2020-06-08 12:33:10 +00:00
Jaco Greeff	94b058d6a3	Align bnToHex signature with bnToU8a (#615 )	2020-06-08 14:29:40 +02:00
Github Actions	3d7ddb85a2	[CI Skip] release/beta 2.13.0-beta.4 skip-checks: true	2020-06-08 11:35:08 +00:00
Jaco Greeff	f7a2bb895f	Fix blake2 U8a JS with hex inputs (#614 ) * Fix blake2 U8a JS with hex inputs * Apply suggestions from code review	2020-06-08 13:31:10 +02:00
Github Actions	c1bfcc00b6	[CI Skip] release/beta 2.13.0-beta.3 skip-checks: true	2020-06-06 08:08:42 +00:00
Jaco Greeff	b16d8e7c26	Bump deps (#612 )	2020-06-06 10:05:02 +02:00
Github Actions	2a4b363fcd	[CI Skip] release/beta 2.13.0-beta.2 skip-checks: true	2020-06-05 20:17:13 +00:00
Jaco Greeff	de689b8e6f	Bump deps (#611 )	2020-06-05 22:13:55 +02:00
Github Actions	2e72ab920b	[CI Skip] release/beta 2.13.0-beta.1 skip-checks: true	2020-06-02 09:44:29 +00:00
Jaco Greeff	565e6baecd	Linting	2020-06-02 11:40:25 +02:00
Jaco Greeff	1e15203b6c	Reset to beta	2020-06-02 11:24:23 +02:00
Github Actions	cc8639565d	[CI Skip] release/stable 2.12.2 skip-checks: true	2020-06-02 08:31:51 +00:00
Jaco Greeff	b77d2e6860	Linting	2020-06-02 10:28:25 +02:00
Jaco Greeff	e1fbd8ff9f	2.12.2	2020-06-02 10:22:30 +02:00
Github Actions	f56dd32b4a	[CI Skip] release/stable 2.12.1 skip-checks: true	2020-06-01 16:09:53 +00:00
Jaco Greeff	6077bef570	2.12 (#609 )	2020-06-01 18:05:55 +02:00
Github Actions	377d83d4ed	[CI Skip] release/beta 2.12.0-beta.2 skip-checks: true	2020-06-01 08:31:12 +00:00
Jaco Greeff	bdb14f91a8	Pre-checks on verify input lengths (#608 ) * Pre-checks on verify input lengths * Small cleanup * Update error signatures	2020-06-01 10:27:08 +02:00
Github Actions	cc5b7ed0ad	[CI Skip] release/beta 2.12.0-beta.1 skip-checks: true	2020-06-01 07:33:27 +00:00
Jaco Greeff	d4491aeb7f	Small cleanups, u8aConcat optimization (#607 ) * Small cleanups, u8aConcat oprimizations * Cleanup * Pre-allocate arrays * Don't recreate PREFIX	2020-06-01 09:29:44 +02:00
Github Actions	0f6e996799	[CI Skip] release/beta 2.12.0-beta.0 skip-checks: true	2020-05-31 12:22:47 +00:00
Jaco Greeff	1f3dd60a8d	{address,u8a}Eq functions (#606 ) * {addres,u8a}Eq functions * Remove mnemonicToSeed	2020-05-31 14:19:10 +02:00
Github Actions	3351fb1cba	[CI Skip] 2.11.1 skip-checks: true	2020-05-26 07:00:59 +00:00
Jaco Greeff	32d176e424	2.11 (#604 )	2020-05-26 08:57:31 +02:00
Github Actions	aec1e26cb9	[CI Skip] 2.11.0-beta.2 skip-checks: true	2020-05-24 17:08:04 +00:00
Jaco Greeff	7d529b6c93	Type adjustments for meta	2020-05-24 19:04:15 +02:00
Github Actions	e22b39ae01	[CI Skip] 2.11.0-beta.1 skip-checks: true	2020-05-23 12:26:33 +00:00
Jaco Greeff	18a202c460	Bump dev w/ eslint (#603 ) * Bump dev w/ eslint * Mop-up remaining lint issues * Update stringShorten expectation	2020-05-23 14:23:13 +02:00
Github Actions	fd9ce319a5	[CI Skip] 2.11.0-beta.0 skip-checks: true	2020-05-15 10:37:46 +00:00
Jaco Greeff	a04c0a5e82	Bump deps (#601 )	2020-05-15 12:34:22 +02:00
Github Actions	06cb5e57a0	[CI Skip] 2.10.1 skip-checks: true	2020-05-14 05:42:04 +00:00
Jaco Greeff	103ea045bf	2.10 (#599 )	2020-05-14 07:38:43 +02:00
Github Actions	4315c76814	[CI Skip] 2.10.0-beta.5 skip-checks: true	2020-05-11 12:01:35 +00:00
Jaco Greeff	6de6b871cd	Adjust DeriveJunction (types & BigInt) (#598 )	2020-05-11 13:57:59 +02:00
Github Actions	82e5d76821	[CI Skip] 2.10.0-beta.4 skip-checks: true	2020-05-11 09:58:13 +00:00
Jaco Greeff	d9a18a4acf	Bump berry (#597 )	2020-05-11 11:54:45 +02:00
Github Actions	2d1d4f808e	[CI Skip] 2.10.0-beta.3 skip-checks: true	2020-05-11 08:00:19 +00:00
Jaco Greeff	d1de30907f	TextEncoder allows non-Uint8Array Buffers (#596 ) * TextEncoder allows non-Uint8Array Buffers * Add eslintrc to eslintignore	2020-05-11 09:57:00 +02:00
Github Actions	d3583dc432	[CI Skip] 2.10.0-beta.2 skip-checks: true	2020-05-08 18:15:33 +00:00
Wei Tang	bb04fa28f7	ss58: add Kulupu prefix to the list (#595 )	2020-05-08 20:12:17 +02:00
Github Actions	bd8e862b62	[CI Skip] 2.10.0-beta.1 skip-checks: true	2020-04-30 06:06:24 +00:00
Jaco Greeff	0f45b7fbf3	Bump deps (#594 )	2020-04-30 08:03:20 +02:00
Github Actions	03eb72f128	[CI Skip] 2.10.0-beta.0 skip-checks: true	2020-04-30 05:31:32 +00:00
Jaco Greeff	f76a4a98be	beta bump (#593 )	2020-04-30 07:28:35 +02:00
Github Actions	c2b91ad8c2	[CI Skip] 2.9.1 skip-checks: true	2020-04-29 22:42:23 +00:00
Jaco Greeff	ffc6b0323b	2.9.1	2020-04-30 00:38:59 +02:00
Github Actions	b666db2721	[CI Skip] 2.9.0-beta.4 skip-checks: true	2020-04-29 22:37:08 +00:00
Jaco Greeff	b00d49564f	Update CHANGELOG.md	2020-04-30 00:34:31 +02:00
Alexander Krupenkin	34380caf1f	Added ECDSA keypair support (#589 ) * Added ECDSA signature verification * Add ECDSA keypair, sign, key derivation, fromSeed and tests * keyring: added ECDSA keypair * Fix lint errors	2020-04-30 00:33:10 +02:00
Github Actions	277cc2b5a8	[CI Skip] 2.9.0-beta.3 skip-checks: true	2020-04-26 20:26:19 +00:00
joe petrowski	733e9e2729	Add example for multisig address creation (#590 ) * add multisig example * typo * lint fix * sort addresses * make linter happy * clean up sorting with ss58 param	2020-04-26 22:23:15 +02:00
Github Actions	482264c615	[CI Skip] 2.9.0-beta.2 skip-checks: true	2020-04-26 12:36:41 +00:00
Jaco Greeff	5d0abef952	Sort with ss58 prefix (#591 )	2020-04-26 14:33:45 +02:00
Github Actions	2397e1c5d7	[CI Skip] 2.9.0-beta.1 skip-checks: true	2020-04-24 17:18:36 +00:00
Jaco Greeff	62ebe257a6	u8aSorted & sortAddresses (#588 )	2020-04-24 19:15:43 +02:00
Github Actions	a2844a449c	[CI Skip] 2.9.0-beta.0 skip-checks: true	2020-04-24 13:38:04 +00:00
Jaco Greeff	60a9866abe	Create createKeyMulti & createKeySub for utility (util-crypto) (#587 ) * Create keyMulti & keysub for utility * Bumps	2020-04-24 15:34:47 +02:00
Github Actions	b196158125	[CI Skip] 2.8.1 skip-checks: true	2020-04-09 13:12:53 +00:00
Jaco Greeff	6b1caacfb9	2.8 (#586 ) * 2.8 * Typos	2020-04-09 15:10:23 +02:00
Github Actions	a7679fb07c	[CI Skip] 2.8.0-beta.7 skip-checks: true	2020-04-07 19:51:29 +00:00
Jaco Greeff	c4acca6c7c	eslint update	2020-04-07 21:48:07 +02:00
Github Actions	5012792693	[CI Skip] 2.8.0-beta.6 skip-checks: true	2020-04-07 19:26:31 +00:00
Jaco Greeff	d40d6c65f7	isDevelopment regex	2020-04-07 21:23:20 +02:00
Github Actions	2c0d8e4b59	[CI Skip] 2.8.0-beta.5 skip-checks: true	2020-04-06 10:25:18 +00:00
Jaco Greeff	d3d8caa0df	Use bundled node (#585 )	2020-04-06 12:22:31 +02:00
Github Actions	a8f8525c9d	[CI Skip] 2.8.0-beta.4 skip-checks: true	2020-04-05 07:55:56 +00:00
Jaco Greeff	caa5a8b9e6	Bump deps (#584 )	2020-04-05 09:52:59 +02:00
Github Actions	ce6187f378	[CI Skip] 2.8.0-beta.3 skip-checks: true	2020-04-04 08:45:26 +00:00
Jaco Greeff	fe9c7a8a80	Bump deps (#583 )	2020-04-04 10:42:21 +02:00
Github Actions	d5584c1837	[CI Skip] 2.8.0-beta.2 skip-checks: true	2020-04-02 06:45:50 +00:00
Jaco Greeff	adb1c1fea4	Rewrite yarn.lock (#580 )	2020-04-02 08:42:32 +02:00
Github Actions	c87c228ab1	[CI Skip] 2.8.0-beta.1 skip-checks: true	2020-04-01 19:23:33 +00:00
Jaco Greeff	cbec4add88	Bump dev (incl. lint fixes) (#579 ) * Bump dev (incl. lint fixes) * Fix failures	2020-04-01 21:20:50 +02:00
Github Actions	6429cc307c	[CI Skip] 2.8.0-beta.0 skip-checks: true	2020-04-01 18:47:32 +00:00
h4x3rotab	c98e994777	Throws an error when signing with a locked keypair (#578 ) * Throws an error when signing with a locked keypair Fixes #576 * Fix lint errors * Switch to `assert` and fix nits	2020-04-01 20:44:40 +02:00