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| var $module=(function($B){ | |
| var _b_ = $B.builtins | |
| var $s = [] | |
| for(var $b in _b_){$s.push('var ' + $b +' = _b_["'+$b+'"]')} | |
| eval($s.join(';')) | |
| var $mod = { | |
| __getattr__ : function(attr){ | |
| if(attr == 'new'){return hash.$factory} | |
| return this[attr] | |
| }, | |
| md5: function(obj){return hash.$factory('md5', obj)}, | |
| sha1: function(obj){return hash.$factory('sha1', obj)}, | |
| sha224: function(obj){return hash.$factory('sha224', obj)}, | |
| sha256: function(obj){return hash.$factory('sha256', obj)}, | |
| sha384: function(obj){return hash.$factory('sha384', obj)}, | |
| sha512: function(obj){return hash.$factory('sha512', obj)}, | |
| algorithms_guaranteed: ['md5', 'sha1', 'sha224', 'sha256', 'sha384', 'sha512'], | |
| algorithms_available: ['md5', 'sha1', 'sha224', 'sha256', 'sha384', 'sha512'] | |
| } | |
| //todo: eventually move this function to a "utility" file or use ajax module? | |
| function $get_CryptoJS_lib(alg){ | |
| if($B.VFS !== undefined && $B.VFS.hashlib){ | |
| // use file in brython_stdlib.js | |
| var lib = $B.VFS["crypto_js.rollups." + alg] | |
| if (lib === undefined){ | |
| throw _b_.ImportError.$factory("can't import hashlib." + alg) | |
| } | |
| var res = lib[1] | |
| try{ | |
| eval(res + "; $B.CryptoJS = CryptoJS;") | |
| return | |
| }catch(err){ | |
| throw Error("JS Eval Error", | |
| "Cannot eval CryptoJS algorithm '" + alg + "' : error:" + err) | |
| } | |
| } | |
| var module = {__name__: 'CryptoJS', $is_package: false} | |
| var res = $B.$download_module(module, $B.brython_path + 'libs/crypto_js/rollups/' + alg + '.js'); | |
| try{ | |
| eval(res + "; $B.CryptoJS = CryptoJS;") | |
| }catch(err){ | |
| throw Error("JS Eval Error", | |
| "Cannot eval CryptoJS algorithm '" + alg + "' : error:" + err) | |
| } | |
| } | |
| function bytes2WordArray(obj){ | |
| // Transform a bytes object into an instance of class WordArray | |
| // defined in CryptoJS | |
| if(!_b_.isinstance(obj, _b_.bytes)){ | |
| throw _b_.TypeError("expected bytes, got " + $B.class_name(obj)) | |
| } | |
| var words = [] | |
| for(var i = 0; i < obj.source.length; i += 4){ | |
| var word = obj.source.slice(i, i + 4) | |
| while(word.length < 4){word.push(0)} | |
| var w = word[3] + (word[2] << 8) + (word[1] << 16) + (word[0] << 24) | |
| words.push(w) | |
| } | |
| return {words: words, sigBytes: obj.source.length} | |
| } | |
| var hash = { | |
| __class__: _b_.type, | |
| __mro__: [_b_.object], | |
| $infos:{ | |
| __name__: 'hash' | |
| } | |
| } | |
| hash.update = function(self, msg){ | |
| self.hash.update(bytes2WordArray(msg)) | |
| } | |
| hash.copy = function(self){ | |
| return self.hash.clone() | |
| } | |
| hash.digest = function(self){ | |
| var obj = self.hash.clone().finalize().toString(), | |
| res = [] | |
| for(var i = 0; i < obj.length; i += 2){ | |
| res.push(parseInt(obj.substr(i, 2), 16)) | |
| } | |
| return _b_.bytes.$factory(res) | |
| } | |
| hash.hexdigest = function(self) { | |
| return self.hash.clone().finalize().toString() | |
| } | |
| hash.$factory = function(alg, obj) { | |
| var res = { | |
| __class__: hash | |
| } | |
| switch(alg) { | |
| case 'md5': | |
| case 'sha1': | |
| case 'sha224': | |
| case 'sha256': | |
| case 'sha384': | |
| case 'sha512': | |
| var ALG = alg.toUpperCase() | |
| if($B.Crypto === undefined || | |
| $B.CryptoJS.algo[ALG] === undefined){$get_CryptoJS_lib(alg)} | |
| res.hash = $B.CryptoJS.algo[ALG].create() | |
| if(obj !== undefined){ | |
| res.hash.update(bytes2WordArray(obj)) | |
| } | |
| break | |
| default: | |
| throw $B.builtins.AttributeError.$factory('Invalid hash algorithm: ' + alg) | |
| } | |
| return res | |
| } | |
| return $mod | |
| })(__BRYTHON__) |