tornado-packages/ethers.js
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Added xpub and xpriv deserialization (#405).

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This commit is contained in:
Richard Moore 2019-02-01 19:47:20 -05:00
parent 3a3764bdb4
commit af3aed4580
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GPG Key ID: 525F70A6FCABC295
1 changed files with 33 additions and 4 deletions
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37
src.ts/utils/hdnode.ts
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@ -216,10 +216,39 @@ export class HDNode {
static isHDNode(value: any): value is HDNode { static isHDNode(value: any): value is HDNode {
return isType(value, 'HDNode'); return isType(value, 'HDNode');
} }
}
static fromExtendedKey(extendedKey: string): HDNode { export function fromExtendedKey(extendedKey: string): HDNode {
return null; let bytes = Base58.decode(extendedKey);
if (bytes.length !== 82 || base58check(bytes.slice(0, 78)) !== extendedKey) {
errors.throwError("invalid extended key", errors.INVALID_ARGUMENT, {
argument: "extendedKey",
value: "[REDACTED]"
});
} }
let depth = bytes[4];
let parentFingerprint = hexlify(bytes.slice(5, 9));
let index = parseInt(hexlify(bytes.slice(9, 13)).substring(2), 16);
let chainCode = hexlify(bytes.slice(13, 45));
let key = bytes.slice(45, 78);
switch (hexlify(bytes.slice(0, 4))) {
// Public Key
case "0x0488b21e": case "0x043587cf":
return new HDNode(_constructorGuard, null, hexlify(key), parentFingerprint, chainCode, index, depth, null, null);
// Private Key
case "0x0488ade4": case "0x04358394 ":
if (key[0] !== 0) { break; }
return new HDNode(_constructorGuard, hexlify(key.slice(1)), null, parentFingerprint, chainCode, index, depth, null, null);
}
return errors.throwError("invalid extended key", errors.INVALID_ARGUMENT, {
argument: "extendedKey",
value: "[REDACTED]"
});
} }
function _fromSeed(seed: Arrayish, mnemonic: string): HDNode { function _fromSeed(seed: Arrayish, mnemonic: string): HDNode {
@ -231,11 +260,11 @@ function _fromSeed(seed: Arrayish, mnemonic: string): HDNode {
return new HDNode(_constructorGuard, bytes32(I.slice(0, 32)), null, "0x00000000", bytes32(I.slice(32)), 0, 0, mnemonic, 'm'); return new HDNode(_constructorGuard, bytes32(I.slice(0, 32)), null, "0x00000000", bytes32(I.slice(32)), 0, 0, mnemonic, 'm');
} }
export function fromMnemonic(mnemonic: string, wordlist?: Wordlist): HDNode { export function fromMnemonic(mnemonic: string, wordlist?: Wordlist, password?: string): HDNode {
// Check that the checksum s valid (will throw an error) // Check that the checksum s valid (will throw an error)
mnemonicToEntropy(mnemonic, wordlist); mnemonicToEntropy(mnemonic, wordlist);
return _fromSeed(mnemonicToSeed(mnemonic), mnemonic); return _fromSeed(mnemonicToSeed(mnemonic, password), mnemonic);
} }
export function fromSeed(seed: Arrayish): HDNode { export function fromSeed(seed: Arrayish): HDNode {