crypto-browserify - npm Package Compare versions

Comparing version 2.0.0 to 2.1.0

create-hash.js

@@ -0,7 +1,4 @@
+var createHash = require('sha.js')
 
-var algs = {
-  sha1   : require('sha.js/sha1'),
-  sha256 : require('sha.js/sha256'),
-  md5    : toConstructor(require('./md5'))
-}
+var md5 = toConstructor(require('./md5'))
 
@@ -29,3 +26,4 @@ function toConstructor (fn) {
 module.exports = function (alg) {
-  return new algs[alg]()
+  if('md5' === alg) return new md5()
+  return createHash(alg)
 }

create-hmac.js

@@ -6,8 +6,13 @@ var createHash = require('./create-hash')
 
-function hmac(fn, key, data) {
-  if(!Buffer.isBuffer(key)) key = new Buffer(key)
-  if(!Buffer.isBuffer(data)) data = new Buffer(data)
+module.exports = Hmac
 
+function Hmac (alg, key) {
+  if(!(this instanceof Hmac)) return new Hmac(alg, key)
+  this._opad = opad
+  this._alg = alg
+
+  key = this._key = !Buffer.isBuffer(key) ? new Buffer(key) : key
+
   if(key.length > blocksize) {
-    key = fn(key)
+    key = createHash(alg).update(key).digest()
   } else if(key.length < blocksize) {
@@ -17,3 +22,5 @@ key = Buffer.concat([key, zeroBuffer], blocksize)
 
-  var ipad = new Buffer(blocksize), opad = new Buffer(blocksize)
+  var ipad = this._ipad = new Buffer(blocksize)
+  var opad = this._opad = new Buffer(blocksize)
+
   for(var i = 0; i < blocksize; i++) {
@@ -24,31 +31,14 @@ ipad[i] = key[i] ^ 0x36
 
-  var hash = fn(Buffer.concat([ipad, data]))
-  return fn(Buffer.concat([opad, hash]))
+  this._hash = createHash(alg).update(ipad)
 }
 
+Hmac.prototype.update = function (data, enc) {
+  this._hash.update(data, enc)
+  return this
+}
 
-module.exports = createHmac
+Hmac.prototype.digest = function (enc) {
+  var h = this._hash.digest()
+  return createHash(this._alg).update(this._opad).update(h).digest(enc)
+}
 
-function createHmac (alg, key) {
-  if(!Buffer.isBuffer(key)) key = new Buffer(key)
-//  if(!Buffer.isBuffer(data)) data = new Buffer(data)
-
-  if(key.length > blocksize) {
-    key = createHash(alg).update(key).digest()
-  } else if(key.length < blocksize) {
-    key = Buffer.concat([key, zeroBuffer], blocksize)
-  }
-
-  var ipad = new Buffer(blocksize), opad = new Buffer(blocksize)
-  for(var i = 0; i < blocksize; i++) {
-    ipad[i] = key[i] ^ 0x36
-    opad[i] = key[i] ^ 0x5C
-  }
-  hash = createHash(alg).update(ipad)//.update(data)
-  var digest = hash.digest
-  hash.digest = function (enc) {
-    var h = digest.call(hash)
-    return createHash(alg).update(opad).update(h).digest(enc)
-  }
-  return hash
-}

index.js

@@ -32,2 +32,7 @@ var Buffer = require('buffer').Buffer
 
+var p = require('./pbkdf2')(exports.createHmac)
+exports.pbkdf2 = p.pbkdf2
+exports.pbkdf2Sync = p.pbkdf2Sync
+
+
 // the least I can do is make error messages for the rest of the node.js/crypto api.
@@ -42,3 +47,3 @@ each(['createCredentials'
 , 'createDiffieHellman'
-, 'pbkdf2'], function (name) {
+], function (name) {
   exports[name] = function () {
@@ -45,0 +50,0 @@ error('sorry,', name, 'is not implemented yet')

package.json

@@ -5,3 +5,3 @@ {
   "description": "partial implementation of crypto for the browser",
-  "version": "2.0.0",
+  "version": "2.1.0",
   "homepage": "https://github.com/dominictarr/crypto-browserify",
@@ -8,0 +8,0 @@ "repository": {

rng.js

 // Original code adapted from Robert Kieffer.
 // details at https://github.com/broofa/node-uuid
+
+
 (function() {
@@ -10,3 +12,3 @@ var _global = this;
   mathRNG = function(size) {
-    var bytes = new Array(size);
+    var bytes = new Buffer(size);
     var r;
@@ -24,3 +26,3 @@
     whatwgRNG = function(size) {
-      var bytes = new Uint8Array(size);
+      var bytes = new Buffer(size); //in browserify, this is an extended Uint8Array
       crypto.getRandomValues(bytes);
@@ -27,0 +29,0 @@ return bytes;

test/create-hmac.js

@@ -6,2 +6,4 @@
 
+var data = require('crypto').pseudoRandomBytes(256)
+
 ;['sha1', 'sha256', 'md5'].forEach(function (alg) {
@@ -18,3 +20,19 @@ console.log('alg', alg)
   })
+
+  for(var i = 8; i < data.length; i += 7)
+    (function (i) {
+      var pass = data.slice(0, i)
+      same('createHmac('+alg+', pseudoRandomBytes('+ i + ')' , function (crypto, cb) {
+        var r = crypto
+          .createHmac(alg, pass)
+          .digest('hex')
+        console.log(r)
+        cb(null, r)
+      })
+    }(i))
+
+
 })
 
+
+

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Improved metrics

Total package byte prevSize

39395

increased by8.02%

Number of package files

22

increased by10%

Lines of code

1091

increased by8.88%

Number of lines in readme file

48

increased by4.35%

No dependency changes