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Fix arcfour initialization and encoding; png prediction fix

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This commit is contained in:
notmasteryet 2011-06-24 22:08:33 -05:00
parent da30105b13
commit 63e74b53e9
2 changed files with 14 additions and 11 deletions
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11
security.js
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@ -5,7 +5,6 @@
var ARCFourCipher = (function() {
function constructor(key) {
var key = this.key;
this.a = 0;
this.b = 0;
var s = new Uint8Array(256);
@ -133,13 +132,13 @@ var CipherTransform = (function() {
}
constructor.prototype = {
createStream: function (stream) {
var cipher = new streamCipherConstructor();
var cipher = new this.streamCipherConstructor();
return new DecryptStream(stream, function(data) {
return cipher.encryptBlock(data);
});
},
decryptString: function(s) {
var cipher = new stringCipherConstructor();
var cipher = new this.stringCipherConstructor();
var data = string2bytes(s);
data = cipher.encryptBlock(data);
return bytes2string(data);
@ -240,9 +239,9 @@ var CipherTransformFactory = (function() {
constructor.prototype = {
createCipherTransform: function(num, gen) {
var encryptionKey = this.encryptionKey;
var key = new Uint8Array(encryptionKey.length + 5), i, j, n;
for (j = 0, n = encryptionKey.length; j < n; ++j)
key[j] = encryptionKey[j];
var key = new Uint8Array(encryptionKey.length + 5), i, n;
for (i = 0, n = encryptionKey.length; i < n; ++i)
key[i] = encryptionKey[i];
key[i++] = num & 0xFF;
key[i++] = (num >> 8) & 0xFF;
key[i++] = (num >> 16) & 0xFF;