54 lines
1.3 KiB
JavaScript
54 lines
1.3 KiB
JavaScript
// Crypto, crypto, where art thou crypto
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var assert = require('assert')
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var CryptoJS = require('crypto-js')
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var crypto = require('crypto')
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var convert = require('./convert')
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function hash160(buffer) {
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var step1 = sha256(buffer)
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var step2a = convert.bytesToWordArray(step1)
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var step2b = CryptoJS.RIPEMD160(step2a)
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return new Buffer(convert.wordArrayToBytes(step2b))
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}
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function hash256(buffer) {
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return sha256(sha256(buffer))
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}
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function sha1(buffer) {
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return crypto.createHash('sha1').update(buffer).digest()
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}
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function sha256(buffer) {
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return crypto.createHash('sha256').update(buffer).digest()
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}
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// FIXME: Name not consistent with others
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function HmacSHA256(buffer, secret) {
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return crypto.createHmac('sha256', secret).update(buffer).digest()
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}
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function HmacSHA512(data, secret) {
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assert(Buffer.isBuffer(data), 'Expected Buffer for data, got ' + data)
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assert(Buffer.isBuffer(secret), 'Expected Buffer for secret, got ' + secret)
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var dataWords = convert.bytesToWordArray(data)
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var secretWords = convert.bytesToWordArray(secret)
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var hash = CryptoJS.HmacSHA512(dataWords, secretWords)
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return new Buffer(convert.wordArrayToBytes(hash))
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}
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module.exports = {
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sha1: sha1,
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sha256: sha256,
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hash160: hash160,
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hash256: hash256,
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HmacSHA256: HmacSHA256,
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HmacSHA512: HmacSHA512
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}
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