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Текущая директория: /opt/BitGoJS/modules/sdk-lib-mpc/dist/src
Просмотр файла: util.js
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.convertHexArrToBigIntArr = convertHexArrToBigIntArr;
exports.convertBigIntArrToHexArr = convertBigIntArrToHexArr;
exports.hexToBigInt = hexToBigInt;
exports.bigIntToHex = bigIntToHex;
exports.bigIntToBufferLE = bigIntToBufferLE;
exports.bigIntFromBufferLE = bigIntFromBufferLE;
exports.bigIntToBufferBE = bigIntToBufferBE;
exports.bigIntFromBufferBE = bigIntFromBufferBE;
exports.bigIntFromU8ABE = bigIntFromU8ABE;
exports.clamp = clamp;
exports.getPaillierPublicKey = getPaillierPublicKey;
exports.randomPositiveCoPrimeTo = randomPositiveCoPrimeTo;
exports.randomPositiveCoPrimeLessThan = randomPositiveCoPrimeLessThan;
exports.randomBigInt = randomBigInt;
exports.getDerivationPath = getDerivationPath;
const paillier_bigint_1 = require("paillier-bigint");
const bigint_crypto_utils_1 = require("bigint-crypto-utils");
const bigint_mod_arith_1 = require("bigint-mod-arith");
const crypto_1 = __importDefault(require("crypto"));
/**
* Returns a bigint array from a hex string array
* @param values
*/
function convertHexArrToBigIntArr(values) {
return values.map((value) => {
return hexToBigInt(value);
});
}
/**
* Returns a hex string array from a bigint array
* @param values
* @param hexLength - length to pad each big int number too
*/
function convertBigIntArrToHexArr(values, hexLength) {
return values.map((value) => {
return bigIntToHex(value, hexLength);
});
}
function hexToBigInt(hex) {
// Strangely bigint.toString(16) gives a hex string without 0x,
// but it won't accept the same string without 0x to convert
// to a bigint (BigInt(hex string)). So have to introduce this
// check to convert to add 0x in case if hex string
// doesn't have it.
if (hex.slice(0, 2) === '0x') {
return BigInt(hex);
}
return BigInt('0x' + hex);
}
/**
* Returns an hex string of the given bigint
*
* @param {bigint} bigint - the bigint to be converted to hex
* @param hexLength
* @returns {string} - the hex value
*/
function bigIntToHex(bigint, hexLength) {
let hex = bigint.toString(16);
hex = '0'.slice(0, hex.length % 2) + hex;
if (hexLength) {
hex = hex.padStart(hexLength, '0');
}
return hex;
}
function bigIntToBufferLE(n, minBytes) {
let v = n.toString(16);
v = '0'.slice(0, v.length % 2) + v;
const buf = Buffer.from(v, 'hex').reverse();
if (minBytes && buf.length < minBytes) {
return Buffer.concat([buf, Buffer.alloc(minBytes - buf.length)]);
}
return buf;
}
function bigIntFromBufferLE(buf) {
return BigInt('0x' + Buffer.from(buf).reverse().toString('hex'));
}
function bigIntToBufferBE(n, minBytes) {
let v = n.toString(16);
v = '0'.slice(0, v.length % 2) + v;
const buf = Buffer.from(v, 'hex');
if (minBytes && buf.length < minBytes) {
return Buffer.concat([Buffer.alloc(minBytes - buf.length), buf]);
}
return buf;
}
function bigIntFromBufferBE(buf) {
return BigInt('0x' + buf.toString('hex'));
}
function bigIntFromU8ABE(buf) {
return bigIntFromBufferBE(Buffer.from(buf));
}
function clamp(u) {
u &= BigInt('0x7ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff8');
u |= BigInt('0x4000000000000000000000000000000000000000000000000000000000000000');
return u;
}
/**
* Function get paillier public key simple varient
* @param {bigint} n
* @returns {bigint}
*/
function getPaillierPublicKey(n) {
return new paillier_bigint_1.PublicKey(n, n + BigInt(1));
}
/**
* Generate a random positive integer co-prime to x
* @param x
* @returns {Promise<bigint>}
*/
async function randomPositiveCoPrimeTo(x) {
while (true) {
const y = await randomBigInt((0, bigint_crypto_utils_1.bitLength)(x));
if (y > BigInt(0) && (0, bigint_mod_arith_1.gcd)(x, y) === BigInt(1)) {
return y;
}
}
}
/**
* Generate a random positive integer coprime less than x with the same bit depth.
* @param x
* @returns {Promise<bigint>}
*/
async function randomPositiveCoPrimeLessThan(x) {
if (x <= BigInt(2)) {
throw new Error('x must be larger than 2');
}
while (true) {
const y = await randomBigInt((0, bigint_crypto_utils_1.bitLength)(x));
if (y > BigInt(0) && y < x && (0, bigint_mod_arith_1.gcd)(x, y) === BigInt(1)) {
return y;
}
}
}
/**
* Generate a random number of a given bitlength
* @param bitlength
* @returns {Promise<bigint>}
*/
async function randomBigInt(bitlength) {
return bigIntFromBufferBE(Buffer.from(await (0, bigint_crypto_utils_1.randBits)(bitlength, true)));
}
/**
* @param seed - used to construct derivation path deterministically
* @param isMaster - if set, path starts with prefix `m/`
* @return path `(m/)/999999/a/b` where `a` and `b` are 7-byte pseudorandom numbers based on seed
*/
function getDerivationPath(seed, isMaster = true) {
const derivationPathInput = sha256(sha256(`${seed}`)).toString('hex');
const derivationPathParts = [
parseInt(derivationPathInput.slice(0, 7), 16),
parseInt(derivationPathInput.slice(7, 14), 16),
];
const prefix = isMaster ? 'm/' : '';
return prefix + '999999/' + derivationPathParts.join('/');
}
function sha256(input) {
return crypto_1.default.createHash('sha256').update(input).digest();
}
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length to pad each big int number too\n */\nexport function convertBigIntArrToHexArr(values: bigint[], hexLength?: number): string[] {\n  return values.map((value) => {\n    return bigIntToHex(value, hexLength);\n  });\n}\n\nexport function hexToBigInt(hex: string): bigint {\n  // Strangely bigint.toString(16) gives a hex string without 0x,\n  // but it won't accept the same string without 0x to convert\n  // to a bigint (BigInt(hex string)). So have to introduce this\n  // check to convert to add 0x in case if hex string\n  // doesn't have it.\n  if (hex.slice(0, 2) === '0x') {\n    return BigInt(hex);\n  }\n  return BigInt('0x' + hex);\n}\n\n/**\n * Returns an hex string of the given bigint\n *\n * @param {bigint} bigint - the bigint to be converted to hex\n * @param hexLength\n * @returns {string} - the hex value\n */\nexport function bigIntToHex(bigint: bigint, hexLength?: number): string {\n  let hex = bigint.toString(16);\n  hex = '0'.slice(0, hex.length % 2) + hex;\n  if (hexLength) {\n    hex = hex.padStart(hexLength, '0');\n  }\n  return hex;\n}\n\nexport function bigIntToBufferLE(n: bigint, minBytes?: number): Buffer {\n  let v = n.toString(16);\n  v = '0'.slice(0, v.length % 2) + v;\n  const buf = Buffer.from(v, 'hex').reverse();\n  if (minBytes && buf.length < minBytes) {\n    return Buffer.concat([buf, Buffer.alloc(minBytes - buf.length)]);\n  }\n  return buf;\n}\n\nexport function bigIntFromBufferLE(buf: Buffer): bigint {\n  return BigInt('0x' + Buffer.from(buf).reverse().toString('hex'));\n}\n\nexport function bigIntToBufferBE(n: bigint, minBytes?: number): Buffer {\n  let v = n.toString(16);\n  v = '0'.slice(0, v.length % 2) + v;\n  const buf = Buffer.from(v, 'hex');\n  if (minBytes && buf.length < minBytes) {\n    return Buffer.concat([Buffer.alloc(minBytes - buf.length), buf]);\n  }\n  return buf;\n}\n\nexport function bigIntFromBufferBE(buf: Buffer): bigint {\n  return BigInt('0x' + buf.toString('hex'));\n}\n\nexport function bigIntFromU8ABE(buf: Uint8Array): bigint {\n  return bigIntFromBufferBE(Buffer.from(buf));\n}\n\nexport function clamp(u: bigint): bigint {\n  u &= BigInt('0x7ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff8');\n  u |= BigInt('0x4000000000000000000000000000000000000000000000000000000000000000');\n  return u;\n}\n\n/**\n * Function get paillier public key simple varient\n * @param {bigint} n\n * @returns {bigint}\n */\nexport function getPaillierPublicKey(n: bigint): PublicKey {\n  return new PublicKey(n, n + BigInt(1));\n}\n\n/**\n * Generate a random positive integer co-prime to x\n * @param x\n * @returns {Promise<bigint>}\n */\nexport async function randomPositiveCoPrimeTo(x: bigint): Promise<bigint> {\n  while (true) {\n    const y = await randomBigInt(bitLength(x));\n    if (y > BigInt(0) && gcd(x, y) === BigInt(1)) {\n      return y;\n    }\n  }\n}\n\n/**\n * Generate a random positive integer coprime less than x with the same bit depth.\n * @param x\n * @returns {Promise<bigint>}\n */\nexport async function randomPositiveCoPrimeLessThan(x: bigint): Promise<bigint> {\n  if (x <= BigInt(2)) {\n    throw new Error('x must be larger than 2');\n  }\n  while (true) {\n    const y = await randomBigInt(bitLength(x));\n    if (y > BigInt(0) && y < x && gcd(x, y) === BigInt(1)) {\n      return y;\n    }\n  }\n}\n\n/**\n * Generate a random number of a given bitlength\n * @param bitlength\n * @returns {Promise<bigint>}\n */\nexport async function randomBigInt(bitlength: number): Promise<bigint> {\n  return bigIntFromBufferBE(Buffer.from(await randBits(bitlength, true)));\n}\n\n/**\n * @param seed - used to construct derivation path deterministically\n * @param isMaster - if set, path starts with prefix `m/`\n * @return path `(m/)/999999/a/b` where `a` and `b` are 7-byte pseudorandom numbers based on seed\n */\nexport function getDerivationPath(seed: string, isMaster = true): string {\n  const derivationPathInput = sha256(sha256(`${seed}`)).toString('hex');\n  const derivationPathParts = [\n    parseInt(derivationPathInput.slice(0, 7), 16),\n    parseInt(derivationPathInput.slice(7, 14), 16),\n  ];\n  const prefix = isMaster ? 'm/' : '';\n  return prefix + '999999/' + derivationPathParts.join('/');\n}\n\nfunction sha256(input: crypto.BinaryLike): Buffer {\n  return crypto.createHash('sha256').update(input).digest();\n}\n"]}Выполнить команду
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