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Diffstat (limited to 'node_modules/create-hash/browser.js')
-rw-r--r-- | node_modules/create-hash/browser.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/node_modules/create-hash/browser.js b/node_modules/create-hash/browser.js new file mode 100644 index 000000000..e9add1e94 --- /dev/null +++ b/node_modules/create-hash/browser.js @@ -0,0 +1,52 @@ +'use strict'; +var inherits = require('inherits') +var md5 = require('./md5') +var rmd160 = require('ripemd160') +var sha = require('sha.js') + +var Base = require('cipher-base') + +function HashNoConstructor(hash) { + Base.call(this, 'digest') + + this._hash = hash + this.buffers = [] +} + +inherits(HashNoConstructor, Base) + +HashNoConstructor.prototype._update = function (data) { + this.buffers.push(data) +} + +HashNoConstructor.prototype._final = function () { + var buf = Buffer.concat(this.buffers) + var r = this._hash(buf) + this.buffers = null + + return r +} + +function Hash(hash) { + Base.call(this, 'digest') + + this._hash = hash +} + +inherits(Hash, Base) + +Hash.prototype._update = function (data) { + this._hash.update(data) +} + +Hash.prototype._final = function () { + return this._hash.digest() +} + +module.exports = function createHash (alg) { + alg = alg.toLowerCase() + if ('md5' === alg) return new HashNoConstructor(md5) + if ('rmd160' === alg || 'ripemd160' === alg) return new HashNoConstructor(rmd160) + + return new Hash(sha(alg)) +} |