72 lines
1.6 KiB
JavaScript
72 lines
1.6 KiB
JavaScript
|
// @flow
|
||
|
|
import { randomBytes, createCipheriv } from 'crypto';
|
||
|
|
import { sha3 } from 'ethereumjs-util';
|
||
|
|
import scrypt from 'scryptsy';
|
||
|
|
import uuid from 'uuid';
|
||
|
|
|
||
|
|
export const scryptSettings = {
|
||
|
|
n: 1024
|
||
|
|
};
|
||
|
|
|
||
|
|
export const kdf = 'scrypt';
|
||
|
|
|
||
|
|
export function pkeyToKeystore(
|
||
|
|
pkey: Buffer,
|
||
|
|
address: string,
|
||
|
|
password: string
|
||
|
|
) {
|
||
|
|
const salt = randomBytes(32);
|
||
|
|
const iv = randomBytes(16);
|
||
|
|
let derivedKey;
|
||
|
|
const kdfparams: Object = {
|
||
|
|
dklen: 32,
|
||
|
|
salt: salt.toString('hex')
|
||
|
|
};
|
||
|
|
if (kdf === 'scrypt') {
|
||
|
|
// FIXME: support progress reporting callback
|
||
|
|
kdfparams.n = 1024;
|
||
|
|
kdfparams.r = 8;
|
||
|
|
kdfparams.p = 1;
|
||
|
|
derivedKey = scrypt(
|
||
|
|
new Buffer(password),
|
||
|
|
salt,
|
||
|
|
kdfparams.n,
|
||
|
|
kdfparams.r,
|
||
|
|
kdfparams.p,
|
||
|
|
kdfparams.dklen
|
||
|
|
);
|
||
|
|
} else {
|
||
|
|
throw new Error('Unsupported kdf');
|
||
|
|
}
|
||
|
|
const cipher = createCipheriv('aes-128-ctr', derivedKey.slice(0, 16), iv);
|
||
|
|
if (!cipher) {
|
||
|
|
throw new Error('Unsupported cipher');
|
||
|
|
}
|
||
|
|
const ciphertext = Buffer.concat([cipher.update(pkey), cipher.final()]);
|
||
|
|
const mac = sha3(
|
||
|
|
Buffer.concat([derivedKey.slice(16, 32), new Buffer(ciphertext, 'hex')])
|
||
|
|
);
|
||
|
|
return {
|
||
|
|
version: 3,
|
||
|
|
id: uuid.v4({
|
||
|
|
random: randomBytes(16)
|
||
|
|
}),
|
||
|
|
address,
|
||
|
|
Crypto: {
|
||
|
|
ciphertext: ciphertext.toString('hex'),
|
||
|
|
cipherparams: {
|
||
|
|
iv: iv.toString('hex')
|
||
|
|
},
|
||
|
|
cipher: 'aes-128-ctr',
|
||
|
|
kdf,
|
||
|
|
kdfparams,
|
||
|
|
mac: mac.toString('hex')
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
export function getV3Filename(address) {
|
||
|
|
const ts = new Date();
|
||
|
|
return ['UTC--', ts.toJSON().replace(/:/g, '-'), '--', address].join('');
|
||
|
|
}
|