99 lines
1.8 KiB
JavaScript
99 lines
1.8 KiB
JavaScript
/*!
|
|
* digest.js - hash functions for bcoin
|
|
* Copyright (c) 2014-2017, Christopher Jeffrey (MIT License).
|
|
* https://github.com/bcoin-org/bcoin
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
/**
|
|
* @module crypto.digest
|
|
*/
|
|
|
|
var crypto = require('crypto');
|
|
var native = require('../native').binding;
|
|
|
|
/**
|
|
* Hash with chosen algorithm.
|
|
* @param {String} alg
|
|
* @param {Buffer} data
|
|
* @returns {Buffer}
|
|
*/
|
|
|
|
exports.hash = function hash(alg, data) {
|
|
return crypto.createHash(alg).update(data).digest();
|
|
};
|
|
|
|
/**
|
|
* Hash with ripemd160.
|
|
* @param {Buffer} data
|
|
* @returns {Buffer}
|
|
*/
|
|
|
|
exports.ripemd160 = function ripemd160(data) {
|
|
return exports.hash('ripemd160', data);
|
|
};
|
|
|
|
/**
|
|
* Hash with sha1.
|
|
* @param {Buffer} data
|
|
* @returns {Buffer}
|
|
*/
|
|
|
|
exports.sha1 = function sha1(data) {
|
|
return exports.hash('sha1', data);
|
|
};
|
|
|
|
/**
|
|
* Hash with sha256.
|
|
* @param {Buffer} data
|
|
* @returns {Buffer}
|
|
*/
|
|
|
|
exports.sha256 = function sha256(data) {
|
|
return exports.hash('sha256', data);
|
|
};
|
|
|
|
/**
|
|
* Hash with sha256 and ripemd160 (OP_HASH160).
|
|
* @param {Buffer} data
|
|
* @returns {Buffer}
|
|
*/
|
|
|
|
exports.hash160 = function hash160(data) {
|
|
return exports.ripemd160(exports.sha256(data));
|
|
};
|
|
|
|
/**
|
|
* Hash with sha256 twice (OP_HASH256).
|
|
* @param {Buffer} data
|
|
* @returns {Buffer}
|
|
*/
|
|
|
|
exports.hash256 = function hash256(data) {
|
|
return exports.sha256(exports.sha256(data));
|
|
};
|
|
|
|
/**
|
|
* Create an HMAC.
|
|
* @param {String} alg
|
|
* @param {Buffer} data
|
|
* @param {Buffer} key
|
|
* @returns {Buffer} HMAC
|
|
*/
|
|
|
|
exports.hmac = function hmac(alg, data, key) {
|
|
var hmac = crypto.createHmac(alg, key);
|
|
return hmac.update(data).digest();
|
|
};
|
|
|
|
if (native) {
|
|
exports.hash = native.hash;
|
|
exports.hmac = native.hmac;
|
|
exports.ripemd160 = native.ripemd160;
|
|
exports.sha1 = native.sha1;
|
|
exports.sha256 = native.sha256;
|
|
exports.hash160 = native.hash160;
|
|
exports.hash256 = native.hash256;
|
|
}
|