80 lines
2.4 KiB
TypeScript
80 lines
2.4 KiB
TypeScript
"use strict";
|
|
|
|
import aes from "aes-js";
|
|
|
|
import { ExternallyOwnedAccount } from "@ethersproject/abstract-signer";
|
|
import { getAddress } from "@ethersproject/address";
|
|
import { arrayify, Bytes } from "@ethersproject/bytes";
|
|
import { keccak256 } from "@ethersproject/keccak256";
|
|
import { pbkdf2 } from "@ethersproject/pbkdf2";
|
|
import { toUtf8Bytes } from "@ethersproject/strings";
|
|
import { Description } from "@ethersproject/properties";
|
|
|
|
import { Logger } from "@ethersproject/logger";
|
|
import { version } from "./_version";
|
|
const logger = new Logger(version);
|
|
|
|
import { getPassword, looseArrayify, searchPath } from "./utils";
|
|
|
|
interface _CrowdsaleAccount {
|
|
address: string;
|
|
privateKey: string;
|
|
|
|
_isCrowdsaleAccount: boolean;
|
|
}
|
|
|
|
export class CrowdsaleAccount extends Description<_CrowdsaleAccount> implements ExternallyOwnedAccount {
|
|
readonly address: string;
|
|
readonly privateKey: string;
|
|
readonly mnemonic?: string;
|
|
readonly path?: string;
|
|
|
|
readonly _isCrowdsaleAccount: boolean;
|
|
|
|
isCrowdsaleAccount(value: any): value is CrowdsaleAccount {
|
|
return !!(value && value._isCrowdsaleAccount);
|
|
}
|
|
}
|
|
|
|
// See: https://github.com/ethereum/pyethsaletool
|
|
export function decrypt(json: string, password: Bytes | string): ExternallyOwnedAccount {
|
|
const data = JSON.parse(json);
|
|
|
|
password = getPassword(password);
|
|
|
|
// Ethereum Address
|
|
const ethaddr = getAddress(searchPath(data, "ethaddr"));
|
|
|
|
// Encrypted Seed
|
|
const encseed = looseArrayify(searchPath(data, "encseed"));
|
|
if (!encseed || (encseed.length % 16) !== 0) {
|
|
logger.throwArgumentError("invalid encseed", "json", json);
|
|
}
|
|
|
|
const key = arrayify(pbkdf2(password, password, 2000, 32, "sha256")).slice(0, 16);
|
|
|
|
const iv = encseed.slice(0, 16);
|
|
const encryptedSeed = encseed.slice(16);
|
|
|
|
// Decrypt the seed
|
|
const aesCbc = new aes.ModeOfOperation.cbc(key, iv);
|
|
const seed = aes.padding.pkcs7.strip(arrayify(aesCbc.decrypt(encryptedSeed)));
|
|
|
|
// This wallet format is weird... Convert the binary encoded hex to a string.
|
|
let seedHex = "";
|
|
for (let i = 0; i < seed.length; i++) {
|
|
seedHex += String.fromCharCode(seed[i]);
|
|
}
|
|
|
|
const seedHexBytes = toUtf8Bytes(seedHex);
|
|
|
|
const privateKey = keccak256(seedHexBytes);
|
|
|
|
return new CrowdsaleAccount ({
|
|
_isCrowdsaleAccount: true,
|
|
address: ethaddr,
|
|
privateKey: privateKey
|
|
});
|
|
}
|
|
|