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14 lines
3.9 KiB
JavaScript
14 lines
3.9 KiB
JavaScript
/*
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CryptoJS v3.1.2
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code.google.com/p/crypto-js
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(c) 2009-2013 by Jeff Mott. All rights reserved.
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code.google.com/p/crypto-js/wiki/License
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*/
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CryptoJS.lib.Cipher||function(u){var g=CryptoJS,f=g.lib,k=f.Base,l=f.WordArray,q=f.BufferedBlockAlgorithm,r=g.enc.Base64,v=g.algo.EvpKDF,n=f.Cipher=q.extend({cfg:k.extend(),createEncryptor:function(a,b){return this.create(this._ENC_XFORM_MODE,a,b)},createDecryptor:function(a,b){return this.create(this._DEC_XFORM_MODE,a,b)},init:function(a,b,c){this.cfg=this.cfg.extend(c);this._xformMode=a;this._key=b;this.reset()},reset:function(){q.reset.call(this);this._doReset()},process:function(a){this._append(a);
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return this._process()},finalize:function(a){a&&this._append(a);return this._doFinalize()},keySize:4,ivSize:4,_ENC_XFORM_MODE:1,_DEC_XFORM_MODE:2,_createHelper:function(a){return{encrypt:function(b,c,d){return("string"==typeof c?s:j).encrypt(a,b,c,d)},decrypt:function(b,c,d){return("string"==typeof c?s:j).decrypt(a,b,c,d)}}}});f.StreamCipher=n.extend({_doFinalize:function(){return this._process(!0)},blockSize:1});var m=g.mode={},t=function(a,b,c){var d=this._iv;d?this._iv=u:d=this._prevBlock;for(var e=
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0;e<c;e++)a[b+e]^=d[e]},h=(f.BlockCipherMode=k.extend({createEncryptor:function(a,b){return this.Encryptor.create(a,b)},createDecryptor:function(a,b){return this.Decryptor.create(a,b)},init:function(a,b){this._cipher=a;this._iv=b}})).extend();h.Encryptor=h.extend({processBlock:function(a,b){var c=this._cipher,d=c.blockSize;t.call(this,a,b,d);c.encryptBlock(a,b);this._prevBlock=a.slice(b,b+d)}});h.Decryptor=h.extend({processBlock:function(a,b){var c=this._cipher,d=c.blockSize,e=a.slice(b,b+d);c.decryptBlock(a,
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b);t.call(this,a,b,d);this._prevBlock=e}});m=m.CBC=h;h=(g.pad={}).Pkcs7={pad:function(a,b){for(var c=4*b,c=c-a.sigBytes%c,d=c<<24|c<<16|c<<8|c,e=[],f=0;f<c;f+=4)e.push(d);c=l.create(e,c);a.concat(c)},unpad:function(a){a.sigBytes-=a.words[a.sigBytes-1>>>2]&255}};f.BlockCipher=n.extend({cfg:n.cfg.extend({mode:m,padding:h}),reset:function(){n.reset.call(this);var a=this.cfg,b=a.iv,a=a.mode;if(this._xformMode==this._ENC_XFORM_MODE)var c=a.createEncryptor;else c=a.createDecryptor,this._minBufferSize=1;
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this._mode=c.call(a,this,b&&b.words)},_doProcessBlock:function(a,b){this._mode.processBlock(a,b)},_doFinalize:function(){var a=this.cfg.padding;if(this._xformMode==this._ENC_XFORM_MODE){a.pad(this._data,this.blockSize);var b=this._process(!0)}else b=this._process(!0),a.unpad(b);return b},blockSize:4});var p=f.CipherParams=k.extend({init:function(a){this.mixIn(a)},toString:function(a){return(a||this.formatter).stringify(this)}}),m=(g.format={}).OpenSSL={stringify:function(a){var b=a.ciphertext;a=a.salt;
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return(a?l.create([1398893684,1701076831]).concat(a).concat(b):b).toString(r)},parse:function(a){a=r.parse(a);var b=a.words;if(1398893684==b[0]&&1701076831==b[1]){var c=l.create(b.slice(2,4));b.splice(0,4);a.sigBytes-=16}return p.create({ciphertext:a,salt:c})}},j=f.SerializableCipher=k.extend({cfg:k.extend({format:m}),encrypt:function(a,b,c,d){d=this.cfg.extend(d);var e=a.createEncryptor(c,d);b=e.finalize(b);e=e.cfg;return p.create({ciphertext:b,key:c,iv:e.iv,algorithm:a,mode:e.mode,padding:e.padding,
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blockSize:a.blockSize,formatter:d.format})},decrypt:function(a,b,c,d){d=this.cfg.extend(d);b=this._parse(b,d.format);return a.createDecryptor(c,d).finalize(b.ciphertext)},_parse:function(a,b){return"string"==typeof a?b.parse(a,this):a}}),g=(g.kdf={}).OpenSSL={execute:function(a,b,c,d){d||(d=l.random(8));a=v.create({keySize:b+c}).compute(a,d);c=l.create(a.words.slice(b),4*c);a.sigBytes=4*b;return p.create({key:a,iv:c,salt:d})}},s=f.PasswordBasedCipher=j.extend({cfg:j.cfg.extend({kdf:g}),encrypt:function(a,
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b,c,d){d=this.cfg.extend(d);c=d.kdf.execute(c,a.keySize,a.ivSize);d.iv=c.iv;a=j.encrypt.call(this,a,b,c.key,d);a.mixIn(c);return a},decrypt:function(a,b,c,d){d=this.cfg.extend(d);b=this._parse(b,d.format);c=d.kdf.execute(c,a.keySize,a.ivSize,b.salt);d.iv=c.iv;return j.decrypt.call(this,a,b,c.key,d)}})}();
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