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Merge pull request #242 from aeternity/release/2.1.0
Release 2.1.0
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1 @@ | ||
| TAG=v1.4.0 | ||
| TAG=minerva |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| import nacl from 'tweetnacl' | ||
| import { full as hmac } from 'tweetnacl-auth' | ||
| import { fromString } from 'bip32-path' | ||
| import { validateMnemonic, mnemonicToSeed, generateMnemonic as genMnemonic } from '@aeternity/bip39' | ||
| import { decryptKey, encodeBase58Check, encryptKey } from './crypto' | ||
|
|
||
| const ED25519_CURVE = Buffer.from('ed25519 seed') | ||
| const HARDENED_OFFSET = 0x80000000 | ||
|
|
||
| const toHex = (buffer) => Buffer.from(buffer).toString('hex') | ||
|
|
||
| export function derivePathFromKey (path, key) { | ||
| const segments = path === '' ? [] : fromString(path).toPathArray() | ||
| segments.forEach((segment, i) => { | ||
| if (segment < HARDENED_OFFSET) { | ||
| throw new Error(`Segment #${i + 1} is not hardened`) | ||
| } | ||
| }) | ||
|
|
||
| return segments.reduce((parentKey, segment) => deriveChild(parentKey, segment), key) | ||
| } | ||
|
|
||
| export function derivePathFromSeed (path, seed) { | ||
| if (!['m', 'm/'].includes(path.slice(0, 2))) { | ||
| throw new Error('Invalid path') | ||
| } | ||
| const masterKey = getMasterKeyFromSeed(seed) | ||
| return derivePathFromKey(path.slice(2), masterKey) | ||
| } | ||
|
|
||
| function formatAccount (keys) { | ||
| const { secretKey, publicKey } = keys | ||
| return { | ||
| secretKey: toHex(secretKey), | ||
| publicKey: `ak_${encodeBase58Check(publicKey)}` | ||
| } | ||
| } | ||
|
|
||
| export function getKeyPair (secretKey) { | ||
| return nacl.sign.keyPair.fromSeed(secretKey) | ||
| } | ||
|
|
||
| export function generateMnemonic () { | ||
| return genMnemonic() | ||
| } | ||
|
|
||
| export function getMasterKeyFromSeed (seed) { | ||
| const I = hmac(seed, ED25519_CURVE) | ||
| const IL = I.slice(0, 32) | ||
| const IR = I.slice(32) | ||
| return { | ||
| secretKey: IL, | ||
| chainCode: IR | ||
| } | ||
| } | ||
|
|
||
| export function deriveChild ({ secretKey, chainCode }, index) { | ||
| if (index < HARDENED_OFFSET) { | ||
| throw new Error(`Child index #${index} is not supported`) | ||
| } | ||
| const indexBuffer = Buffer.allocUnsafe(4) | ||
| indexBuffer.writeUInt32BE(index, 0) | ||
|
|
||
| const data = Buffer.concat([Buffer.alloc(1, 0), secretKey, indexBuffer]) | ||
|
|
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| const I = hmac(data, chainCode) | ||
| const IL = I.slice(0, 32) | ||
| const IR = I.slice(32) | ||
| return { | ||
| secretKey: IL, | ||
| chainCode: IR | ||
| } | ||
| } | ||
|
|
||
| export function generateSaveHDWallet (mnemonic, password) { | ||
| if (!validateMnemonic(mnemonic)) { | ||
| throw new Error('Invalid mnemonic') | ||
| } | ||
| const seed = mnemonicToSeed(mnemonic) | ||
| const walletKey = derivePathFromSeed('m/44h/457h', seed) | ||
| return { | ||
| secretKey: toHex(encryptKey(password, walletKey.secretKey)), | ||
| chainCode: toHex(encryptKey(password, walletKey.chainCode)) | ||
| } | ||
| } | ||
|
|
||
| export function getSaveHDWalletAccounts (saveHDWallet, password, accountCount) { | ||
| const walletKey = { | ||
| secretKey: decryptKey(password, Buffer.from(saveHDWallet.secretKey, 'hex')), | ||
| chainCode: decryptKey(password, Buffer.from(saveHDWallet.chainCode, 'hex')) | ||
| } | ||
| return (new Array(accountCount)).fill() | ||
| .map((_, idx) => | ||
| formatAccount(getKeyPair(derivePathFromKey(`${idx}h/0h/0h`, walletKey).secretKey))) | ||
| } | ||
|
|
||
| export default { | ||
| getSaveHDWalletAccounts, | ||
| generateSaveHDWallet, | ||
| generateMnemonic, | ||
| deriveChild, | ||
| getMasterKeyFromSeed | ||
| } |
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