52 lines
1.2 KiB
JavaScript
52 lines
1.2 KiB
JavaScript
/**
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* Node.js Bitmessage crypto implementation.
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* @module bitmessage/crypto-platform
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*/
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"use strict";
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require("es6-promise").polyfill();
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var crypto = require("crypto");
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/**
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* Calculate SHA-512 hash.
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* @param {Buffer} buf - Input data
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* @return {Promise.<Buffer>} Resulting hash.
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*/
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exports.sha512 = function(buf) {
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var hash = crypto.createHash("sha512");
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hash.update(buf);
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return Promise.resolve(hash.digest());
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};
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/**
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* Calculate SHA-256 hash.
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* @param {Buffer} buf - Input data
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* @return {Promise.<Buffer>} Resulting hash.
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*/
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exports.sha256 = function(buf) {
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var hash = crypto.createHash("sha256");
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hash.update(buf);
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return Promise.resolve(hash.digest());
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};
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/**
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* Calculate RIPEMD-160 hash.
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* @param {Buffer} buf - Input data
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* @return {Promise.<Buffer>} Resulting hash.
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*/
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exports.ripemd160 = function(buf) {
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var hash = crypto.createHash("ripemd160");
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hash.update(buf);
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return Promise.resolve(hash.digest());
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};
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/**
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* Generate cryptographically strong pseudo-random data.
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* @param {number} size - Number of bytes
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* @return {Buffer} Buffer with random data.
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*/
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exports.randomBytes = function(size) {
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return crypto.randomBytes(size);
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};
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