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| author | friendica <info@friendica.com> | 2013-11-07 23:25:13 -0800 |
|---|---|---|
| committer | friendica <info@friendica.com> | 2013-11-07 23:25:13 -0800 |
| commit | 3a9cbcaf011f5c5d423e1cd99b43442669692129 (patch) | |
| tree | d160f11dd97871d94ffe6e6d10ea48ce57eed357 /library/cryptojs/components/hmac.js | |
| parent | 90ab0d963bf5074643c6f275dbb8595b6c51a03d (diff) | |
| download | volse-hubzilla-3a9cbcaf011f5c5d423e1cd99b43442669692129.tar.gz volse-hubzilla-3a9cbcaf011f5c5d423e1cd99b43442669692129.tar.bz2 volse-hubzilla-3a9cbcaf011f5c5d423e1cd99b43442669692129.zip | |
Wankers.
Diffstat (limited to 'library/cryptojs/components/hmac.js')
| -rw-r--r-- | library/cryptojs/components/hmac.js | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/library/cryptojs/components/hmac.js b/library/cryptojs/components/hmac.js new file mode 100644 index 000000000..b75cd0bf9 --- /dev/null +++ b/library/cryptojs/components/hmac.js @@ -0,0 +1,131 @@ +/* +CryptoJS v3.1.2 +code.google.com/p/crypto-js +(c) 2009-2013 by Jeff Mott. All rights reserved. +code.google.com/p/crypto-js/wiki/License +*/ +(function () {
+ // Shortcuts
+ var C = CryptoJS;
+ var C_lib = C.lib;
+ var Base = C_lib.Base;
+ var C_enc = C.enc;
+ var Utf8 = C_enc.Utf8;
+ var C_algo = C.algo;
+
+ /**
+ * HMAC algorithm.
+ */
+ var HMAC = C_algo.HMAC = Base.extend({
+ /**
+ * Initializes a newly created HMAC.
+ *
+ * @param {Hasher} hasher The hash algorithm to use.
+ * @param {WordArray|string} key The secret key.
+ *
+ * @example
+ *
+ * var hmacHasher = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, key);
+ */
+ init: function (hasher, key) {
+ // Init hasher
+ hasher = this._hasher = new hasher.init();
+
+ // Convert string to WordArray, else assume WordArray already
+ if (typeof key == 'string') {
+ key = Utf8.parse(key);
+ }
+
+ // Shortcuts
+ var hasherBlockSize = hasher.blockSize;
+ var hasherBlockSizeBytes = hasherBlockSize * 4;
+
+ // Allow arbitrary length keys
+ if (key.sigBytes > hasherBlockSizeBytes) {
+ key = hasher.finalize(key);
+ }
+
+ // Clamp excess bits
+ key.clamp();
+
+ // Clone key for inner and outer pads
+ var oKey = this._oKey = key.clone();
+ var iKey = this._iKey = key.clone();
+
+ // Shortcuts
+ var oKeyWords = oKey.words;
+ var iKeyWords = iKey.words;
+
+ // XOR keys with pad constants
+ for (var i = 0; i < hasherBlockSize; i++) {
+ oKeyWords[i] ^= 0x5c5c5c5c;
+ iKeyWords[i] ^= 0x36363636;
+ }
+ oKey.sigBytes = iKey.sigBytes = hasherBlockSizeBytes;
+
+ // Set initial values
+ this.reset();
+ },
+
+ /**
+ * Resets this HMAC to its initial state.
+ *
+ * @example
+ *
+ * hmacHasher.reset();
+ */
+ reset: function () {
+ // Shortcut
+ var hasher = this._hasher;
+
+ // Reset
+ hasher.reset();
+ hasher.update(this._iKey);
+ },
+
+ /**
+ * Updates this HMAC with a message.
+ *
+ * @param {WordArray|string} messageUpdate The message to append.
+ *
+ * @return {HMAC} This HMAC instance.
+ *
+ * @example
+ *
+ * hmacHasher.update('message');
+ * hmacHasher.update(wordArray);
+ */
+ update: function (messageUpdate) {
+ this._hasher.update(messageUpdate);
+
+ // Chainable
+ return this;
+ },
+
+ /**
+ * Finalizes the HMAC computation.
+ * Note that the finalize operation is effectively a destructive, read-once operation.
+ *
+ * @param {WordArray|string} messageUpdate (Optional) A final message update.
+ *
+ * @return {WordArray} The HMAC.
+ *
+ * @example
+ *
+ * var hmac = hmacHasher.finalize();
+ * var hmac = hmacHasher.finalize('message');
+ * var hmac = hmacHasher.finalize(wordArray);
+ */
+ finalize: function (messageUpdate) {
+ // Shortcut
+ var hasher = this._hasher;
+
+ // Compute HMAC
+ var innerHash = hasher.finalize(messageUpdate);
+ hasher.reset();
+ var hmac = hasher.finalize(this._oKey.clone().concat(innerHash));
+
+ return hmac;
+ }
+ });
+}());
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