diff --git a/.flowconfig b/.flowconfig
index 0cff1d89d..b73426efe 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -13,5 +13,5 @@ all=warn
 
 [options]
 include_warnings=true
-module.name_mapper='^@polkadot/util-\(crypto\|rlp\|triehash\)\(.*\)$' -> '<PROJECT_ROOT>/packages/util-\1/src\2'
+module.name_mapper='^@polkadot/util-\(crypto\|keyring\|rlp\|triehash\)\(.*\)$' -> '<PROJECT_ROOT>/packages/util-\1/src\2'
 module.name_mapper='^@polkadot/util\(.*\)$' -> '<PROJECT_ROOT>/packages/util/src\1'
diff --git a/README.md b/README.md
index 0eb2569a3..110a56469 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ It is split up into a number of internal packages -
 
 - [packages/util](packages/util/) General utilities
 - [packages/util-crypto](packages/util-crypto/) Crypto and hashing utilities
+- [packages/util-keyring](packages/util-crypto/) Keyring management
 - [packages/util-rlp](packages/util-rlp/) RLP encoding & decoding
 - [packages/util-triehash](packages/util-triehash/) Calculation of trie hashes
 
diff --git a/jest.config.js b/jest.config.js
index bd77b1f47..9a7e26241 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -2,7 +2,7 @@ const config = require('@polkadot/dev/config/jest');
 
 module.exports = Object.assign({}, config, {
   moduleNameMapper: {
-    '@polkadot/util-(crypto|rlp|triehash)(.*)$': '<rootDir>/packages/util-$1/src/$2',
+    '@polkadot/util-(crypto|keyring|rlp|triehash)(.*)$': '<rootDir>/packages/util-$1/src/$2',
     '@polkadot/util(.*)$': '<rootDir>/packages/util/src/$1'
   }
 });
diff --git a/lerna.json b/lerna.json
index 522b16d3f..ccc9b8fbc 100644
--- a/lerna.json
+++ b/lerna.json
@@ -10,5 +10,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "0.15.10"
+  "version": "0.16.0"
 }
diff --git a/packages/util-crypto/package.json b/packages/util-crypto/package.json
index 1d16e2171..430f552db 100644
--- a/packages/util-crypto/package.json
+++ b/packages/util-crypto/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/util-crypto",
-  "version": "0.15.10",
+  "version": "0.16.0",
   "description": "A collection of useful crypto utilities for @polkadot",
   "main": "index.js",
   "keywords": [
diff --git a/packages/util-crypto/src/blake2/blake2b/asU8a.spec.js b/packages/util-crypto/src/blake2/blake2b/asU8a.spec.js
index e2fc368b8..5757e4df2 100644
--- a/packages/util-crypto/src/blake2/blake2b/asU8a.spec.js
+++ b/packages/util-crypto/src/blake2/blake2b/asU8a.spec.js
@@ -5,20 +5,17 @@
 const { blake2bAsU8a } = require('./index');
 
 describe('blake2bAsU8a', () => {
+  it('creates the correct hash (default length)', () => {
+    expect(
+      blake2bAsU8a('abc')
+    ).toEqual(new Uint8Array([186, 128, 165, 63, 152, 28, 77, 13, 106, 39, 151, 182, 159, 18, 246, 233, 76, 33, 47, 20, 104, 90, 196, 183, 75, 18, 187, 111, 219, 255, 162, 209, 125, 135, 197, 57, 42, 171, 121, 45, 194, 82, 213, 222, 69, 51, 204, 149, 24, 211, 138, 168, 219, 241, 146, 90, 185, 35, 134, 237, 212, 0, 153, 35]));
+  });
+
   it('creates the correct hash', () => {
     expect(
-      blake2bAsU8a('abc', 512)
+      blake2bAsU8a('abc', 256)
     ).toEqual(
-      Uint8Array.from([
-        0xba, 0x80, 0xa5, 0x3f, 0x98, 0x1c, 0x4d, 0x0d,
-        0x6a, 0x27, 0x97, 0xb6, 0x9f, 0x12, 0xf6, 0xe9,
-        0x4c, 0x21, 0x2f, 0x14, 0x68, 0x5a, 0xc4, 0xb7,
-        0x4b, 0x12, 0xbb, 0x6f, 0xdb, 0xff, 0xa2, 0xd1,
-        0x7d, 0x87, 0xc5, 0x39, 0x2a, 0xab, 0x79, 0x2d,
-        0xc2, 0x52, 0xd5, 0xde, 0x45, 0x33, 0xcc, 0x95,
-        0x18, 0xd3, 0x8a, 0xa8, 0xdb, 0xf1, 0x92, 0x5a,
-        0xb9, 0x23, 0x86, 0xed, 0xd4, 0x00, 0x99, 0x23
-      ])
+      new Uint8Array([189, 221, 129, 60, 99, 66, 57, 114, 49, 113, 239, 63, 238, 152, 87, 155, 148, 150, 78, 59, 177, 203, 62, 66, 114, 98, 200, 192, 104, 213, 35, 25])
     );
   });
 });
diff --git a/packages/util-keyring/LICENSE b/packages/util-keyring/LICENSE
new file mode 100644
index 000000000..3d150a620
--- /dev/null
+++ b/packages/util-keyring/LICENSE
@@ -0,0 +1,15 @@
+ISC License (ISC)
+
+Copyright 2017-2018 Jaco Greeff <jacogr@gmail.com>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
diff --git a/packages/util-keyring/README.md b/packages/util-keyring/README.md
new file mode 100644
index 000000000..bc3aa7470
--- /dev/null
+++ b/packages/util-keyring/README.md
@@ -0,0 +1,13 @@
+[![polkadotjs](https://img.shields.io/badge/polkadot-js-orange.svg?style=flat-square)](https://polkadot.js.org)
+![isc](https://img.shields.io/badge/license-ISC-lightgrey.svg?style=flat-square)
+[![style](https://img.shields.io/badge/code%20style-semistandard-lightgrey.svg?style=flat-square)](https://github.com/Flet/semistandard)
+[![npm](https://img.shields.io/npm/v/@polkadot/util-keyring.svg?style=flat-square)](https://www.npmjs.com/package/@polkadot/util-keyring)
+[![travis](https://img.shields.io/travis/polkadot-js/client.svg?style=flat-square)](https://travis-ci.org/polkadot-js/client)
+[![maintainability](https://img.shields.io/codeclimate/maintainability/polkadot-js/client.svg?style=flat-square)](https://codeclimate.com/github/polkadot-js/client/maintainability)
+[![coverage](https://img.shields.io/coveralls/polkadot-js/client.svg?style=flat-square)](https://coveralls.io/github/polkadot-js/client?branch=master)
+[![dependency](https://david-dm.org/polkadot-js/client.svg?style=flat-square&path=packages/util-keyring)](https://david-dm.org/polkadot-js/client?path=packages/util-keyring)
+[![devDependency](https://david-dm.org/polkadot-js/client/dev-status.svg?style=flat-square&path=packages/util-keyring)](https://david-dm.org/polkadot-js/client?path=packages/util-keyring#info=devDependencies)
+
+# @polkadot/util-keyring
+
+Key management
diff --git a/packages/util-keyring/docs/README.md b/packages/util-keyring/docs/README.md
new file mode 100644
index 000000000..3b7b91d37
--- /dev/null
+++ b/packages/util-keyring/docs/README.md
@@ -0,0 +1,6 @@
+# Available interfaces
+
+ 
+
+
+# Available methods
\ No newline at end of file
diff --git a/packages/util-keyring/package.json b/packages/util-keyring/package.json
new file mode 100644
index 000000000..4b2208035
--- /dev/null
+++ b/packages/util-keyring/package.json
@@ -0,0 +1,38 @@
+{
+  "name": "@polkadot/util-keyring",
+  "version": "0.16.0",
+  "description": "Keyring management",
+  "main": "index.js",
+  "engines": {
+    "node": ">=8.0"
+  },
+  "publishConfig": {
+    "access": "public",
+    "registry": "https://registry.npmjs.org"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/polkadot-js/client.git"
+  },
+  "keywords": [
+    "Polkadot",
+    "Keyring",
+    "ed25519"
+  ],
+  "author": "Jaco Greeff <jacogr@gmail.com>",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/polkadot-js/client/issues"
+  },
+  "homepage": "https://github.com/polkadot-js/client/tree/master/packages/util-keyring#readme",
+  "scripts": {
+    "build": "polkadot-dev-build-babel",
+    "check": "eslint src && flow check",
+    "test": "echo \"Tests only available from root wrapper\""
+  },
+  "dependencies": {
+    "@polkadot/util": "^0.16.0",
+    "@polkadot/util-crypto": "^0.16.0",
+    "babel-runtime": "^6.26.0"
+  }
+}
diff --git a/packages/util-keyring/src/index.js b/packages/util-keyring/src/index.js
new file mode 100644
index 000000000..106745af4
--- /dev/null
+++ b/packages/util-keyring/src/index.js
@@ -0,0 +1,37 @@
+// Copyright 2017-2018 Jaco Greeff
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+// @flow
+
+import type { KeyringInstance, KeyringPair } from './types';
+
+type KeyringPairMap = {
+  [string]: KeyringPair
+};
+
+const naclKeypairFromSeed = require('@polkadot/util-crypto/nacl/keypair/fromSeed');
+const u8aToString = require('@polkadot/util/u8a/toString');
+
+const createPair = require('./pair');
+
+module.exports = function keyring (): KeyringInstance {
+  const pairs: KeyringPairMap = {};
+  const getPairs = (): Array<KeyringPair> =>
+    // flowlint-next-line unclear-type:off
+    ((Object.values(pairs): any): Array<KeyringPair>);
+
+  return {
+    addFromSeed: (seed: Uint8Array | string): KeyringPair => {
+      const pair = createPair(naclKeypairFromSeed(seed));
+
+      pairs[pair.id] = pair;
+
+      return pair;
+    },
+    getPair: (publicKey: Uint8Array): ?KeyringPair =>
+      pairs[u8aToString(publicKey)],
+    getPairs,
+    getPublicKeys: (): Array<Uint8Array> =>
+      getPairs().map(({ publicKey }) => publicKey)
+  };
+};
diff --git a/packages/util-keyring/src/index.spec.js b/packages/util-keyring/src/index.spec.js
new file mode 100644
index 000000000..41ad997ae
--- /dev/null
+++ b/packages/util-keyring/src/index.spec.js
@@ -0,0 +1,43 @@
+// Copyright 2017-2018 Jaco Greeff
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+
+const index = require('./index');
+
+describe('keypair', () => {
+  const publicKeyOne = new Uint8Array([47, 140, 97, 41, 216, 22, 207, 81, 195, 116, 188, 127, 8, 195, 230, 62, 209, 86, 207, 120, 174, 251, 74, 101, 80, 217, 123, 135, 153, 121, 119, 238]);
+  const publicKeyTwo = new Uint8Array([215, 90, 152, 1, 130, 177, 10, 183, 213, 75, 254, 211, 201, 100, 7, 58, 14, 225, 114, 243, 218, 166, 35, 37, 175, 2, 26, 104, 247, 7, 81, 26]);
+  const seedOne = '12345678901234567890123456789012';
+  const seedTwo = '0x9d61b19deffd5a60ba844af492ec2cc44449c5697b326919703bac031cae7f60';
+  let keypair;
+
+  beforeEach(() => {
+    keypair = index();
+
+    keypair.addFromSeed(seedOne);
+  });
+
+  it('adds the pair', () => {
+    expect(
+      keypair.addFromSeed(seedTwo)
+    ).toMatchObject({
+      publicKey: publicKeyTwo
+    });
+  });
+
+  it('allows publicKeys retrieval', () => {
+    keypair.addFromSeed(seedTwo);
+
+    expect(
+      keypair.getPublicKeys()
+    ).toEqual([ publicKeyOne, publicKeyTwo ]);
+  });
+
+  it('allows retrieval of a specific item', () => {
+    expect(
+      keypair.getPair(publicKeyOne)
+    ).toMatchObject({
+      publicKey: publicKeyOne
+    });
+  });
+});
diff --git a/packages/util-keyring/src/pair.js b/packages/util-keyring/src/pair.js
new file mode 100644
index 000000000..0e038408c
--- /dev/null
+++ b/packages/util-keyring/src/pair.js
@@ -0,0 +1,22 @@
+// Copyright 2017-2018 Jaco Greeff
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+// @flow
+
+import type { KeypairType } from '@polkadot/util-crypto/types';
+import type { KeyringPair } from './types';
+
+const naclSign = require('@polkadot/util-crypto/nacl/sign');
+const naclVerify = require('@polkadot/util-crypto/nacl/verify');
+const u8aToString = require('@polkadot/util/u8a/toString');
+
+module.exports = function pair ({ publicKey, secretKey }: KeypairType): KeyringPair {
+  return {
+    id: u8aToString(publicKey),
+    publicKey,
+    sign: (message: Uint8Array): Uint8Array =>
+      naclSign(message, secretKey),
+    verify: (message: Uint8Array, signature: Uint8Array): boolean =>
+      naclVerify(message, signature, publicKey)
+  };
+};
diff --git a/packages/util-keyring/src/pair.spec.js b/packages/util-keyring/src/pair.spec.js
new file mode 100644
index 000000000..69d36149d
--- /dev/null
+++ b/packages/util-keyring/src/pair.spec.js
@@ -0,0 +1,44 @@
+// Copyright 2017-2018 Jaco Greeff
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+
+const keyring = require('./testing')();
+
+// aligned with @polkadot/util-crypto tests
+describe('pair', () => {
+  const SIGNATURE = new Uint8Array([28, 58, 206, 239, 249, 70, 59, 191, 166, 40, 219, 218, 235, 170, 25, 79, 10, 94, 9, 197, 34, 126, 1, 150, 246, 68, 28, 238, 36, 26, 172, 163, 168, 90, 202, 211, 126, 246, 57, 212, 43, 24, 88, 197, 240, 113, 118, 76, 37, 81, 91, 110, 236, 50, 144, 134, 100, 223, 220, 238, 34, 185, 211, 7]);
+
+  it('has a publicKey', () => {
+    expect(
+      keyring.one.publicKey
+    ).toEqual(
+      new Uint8Array([47, 140, 97, 41, 216, 22, 207, 81, 195, 116, 188, 127, 8, 195, 230, 62, 209, 86, 207, 120, 174, 251, 74, 101, 80, 217, 123, 135, 153, 121, 119, 238])
+    );
+  });
+
+  it('allows signing', () => {
+    expect(
+      keyring.one.sign(
+        new Uint8Array([0x61, 0x62, 0x63, 0x64])
+      )
+    ).toEqual(SIGNATURE);
+  });
+
+  it('validates a correctly signed message', () => {
+    expect(
+      keyring.one.verify(
+        new Uint8Array([0x61, 0x62, 0x63, 0x64]),
+        SIGNATURE
+      )
+    ).toEqual(true);
+  });
+
+  it('fails a correctly signed message (message changed)', () => {
+    expect(
+      keyring.one.verify(
+        new Uint8Array([0x61, 0x62, 0x63, 0x64, 0x65]),
+        SIGNATURE
+      )
+    ).toEqual(false);
+  });
+});
diff --git a/packages/util-keyring/src/testing.js b/packages/util-keyring/src/testing.js
new file mode 100644
index 000000000..e245a8d01
--- /dev/null
+++ b/packages/util-keyring/src/testing.js
@@ -0,0 +1,43 @@
+// Copyright 2017-2018 Jaco Greeff
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+// @flow
+
+import type { KeyringPair } from './types';
+
+type TestKeyring = {
+  [string]: KeyringPair
+};
+
+const createKeyring = require('./index');
+
+const SEEDS = {
+  alice:
+    'Alice                           ',
+  bob:
+    'Bob                             ',
+  charlie:
+    'Charlie                         ',
+  dave:
+    'Dave                            ',
+  eve:
+    'Eve                             ',
+  ferdie:
+    'Ferdie                          ',
+  one:
+    '12345678901234567890123456789012',
+  two:
+    '0x9d61b19deffd5a60ba844af492ec2cc44449c5697b326919703bac031cae7f60'
+};
+
+module.exports = function testKeyring (): TestKeyring {
+  const keyring = createKeyring();
+
+  return Object
+    .keys(SEEDS)
+    .reduce((result, key) => {
+      result[key] = keyring.addFromSeed(SEEDS[key]);
+
+      return result;
+    }, {});
+};
diff --git a/packages/util-keyring/src/types.js b/packages/util-keyring/src/types.js
new file mode 100644
index 000000000..5d672ed5b
--- /dev/null
+++ b/packages/util-keyring/src/types.js
@@ -0,0 +1,19 @@
+// Copyright 2017-2018 Jaco Greeff
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+// @flow
+
+export type KeyringPair = {
+  id: string,
+  publicKey: Uint8Array,
+
+  sign (message: Uint8Array): Uint8Array,
+  verify (message: Uint8Array, signature: Uint8Array): boolean
+};
+
+export type KeyringInstance = {
+  addFromSeed (seed: Uint8Array | string): KeyringPair,
+  getPair (publicKey: Uint8Array): ?KeyringPair,
+  getPairs (): Array<KeyringPair>,
+  getPublicKeys (): Array<Uint8Array>
+};
diff --git a/packages/util-rlp/package.json b/packages/util-rlp/package.json
index e71503c7f..055e34757 100644
--- a/packages/util-rlp/package.json
+++ b/packages/util-rlp/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/util-rlp",
-  "version": "0.15.10",
+  "version": "0.16.0",
   "description": "RLP encoding and decoding",
   "main": "index.js",
   "keywords": [
@@ -29,7 +29,7 @@
     "test": "echo \"Tests only available from root wrapper\""
   },
   "dependencies": {
-    "@polkadot/util": "^0.15.10",
+    "@polkadot/util": "^0.16.0",
     "babel-runtime": "^6.26.0"
   },
   "devDependencies": {
diff --git a/packages/util-triehash/package.json b/packages/util-triehash/package.json
index 00f157a03..150d86b38 100644
--- a/packages/util-triehash/package.json
+++ b/packages/util-triehash/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/util-triehash",
-  "version": "0.15.10",
+  "version": "0.16.0",
   "description": "Creation of triehash values",
   "main": "index.js",
   "keywords": [
@@ -29,9 +29,9 @@
     "test": "echo \"Tests only available from root wrapper\""
   },
   "dependencies": {
-    "@polkadot/util": "^0.15.10",
-    "@polkadot/util-crypto": "^0.15.10",
-    "@polkadot/util-rlp": "^0.15.10",
+    "@polkadot/util": "^0.16.0",
+    "@polkadot/util-crypto": "^0.16.0",
+    "@polkadot/util-rlp": "^0.16.0",
     "babel-runtime": "^6.26.0"
   }
 }
diff --git a/packages/util/package.json b/packages/util/package.json
index 1246cd02a..421b8716e 100644
--- a/packages/util/package.json
+++ b/packages/util/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/util",
-  "version": "0.15.10",
+  "version": "0.16.0",
   "description": "A collection of useful utilities for @polkadot",
   "main": "index.js",
   "keywords": [