Schnorrkel support (#297)

* Initial schnorrkel support

* Start conversion of actual keyring

* Wrap encoding/decoding (needs another check)

* Manage encoding version & types with passthrough

* Update to version with working sign

* Cleanup pair interface (with seed)

* Fix failing tests

* Align naclSign signature

* Update tests for nacl (with TS conversion)

* Bump version with CHANGELOG

* Remove unneeded dep

* Use KeyringOptions instead of PairType

* Do isNumber check on addressPrefix

packages/keyring/src/pair/encode.ts

@@ -2,17 +2,19 @@
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.
 
-import { stringToU8a, u8aConcat, u8aFixLength } from '@polkadot/util/index';
+import { stringToU8a, u8aConcat, u8aFixLength, assert } from '@polkadot/util/index';
 import { naclEncrypt } from '@polkadot/util-crypto/index';
 
 import { PKCS8_DIVIDER, PKCS8_HEADER } from './defaults';
 
-export default function encode (secretKey: Uint8Array, passphrase?: string): Uint8Array {
+export default function encode (publicKey: Uint8Array, seed?: Uint8Array | null, passphrase?: string): Uint8Array {
+  assert(seed, 'Expected a valid seed to be passed to encode');
+
   const encoded = u8aConcat(
     PKCS8_HEADER,
-    secretKey.subarray(0, 32),
+    seed as Uint8Array,
     PKCS8_DIVIDER,
-    secretKey.subarray(32, 64)
+    publicKey
   );
 
   if (!passphrase) {