python PyCrypto AES加密和可逆的CryptoJS的AES加密，pycryptocryptojs,CryptoJS的加密代
python PyCrypto AES加密和可逆的CryptoJS的AES加密，pycryptocryptojs,CryptoJS的加密代
CryptoJS的加密代码，需要从google code下载相关js
app.js
var encrypted;// Send the #to_encrypt string to be encrypted by Python and populate the Encryption Result Section$("#do_encrypt").click(function () { var post_data = { to_encrypt: $("#to_encrypt").val() }; $.post("/encrypt", post_data, function (data) { encrypted = data; $("#encrypt_key").val(data.key); $("#encrypt_iv").val(data.iv); $("#encrypt_ct").val(data.ciphertext); $("#do_decrypt").removeAttr("disabled"); });});// Output the decryption result to #decrypted, based on encrypted data from #do_encrypt$("#do_decrypt").click(function () { var key = CryptoJS.enc.Hex.parse(encrypted.key), iv = CryptoJS.enc.Hex.parse(encrypted.iv), cipher = CryptoJS.lib.CipherParams.create({ ciphertext: CryptoJS.enc.Base64.parse(encrypted.ciphertext) }), result = CryptoJS.AES.decrypt(cipher, key, {iv: iv, mode: CryptoJS.mode.CFB}); $('#decrypted').val(result.toString(CryptoJS.enc.Utf8));});index.html
<html> <head> <title>Encryption: from Python to JS</title> <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css" type="text/css" /> <script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script> </head> <body> <div class="container"> <h1>Encryption: from Python to JS</h1> <!-- To Encrypt Section --> <div class="panel panel-default"> <div class="panel-body"> <div class="form-group"> <label for="to_encrypt">To encrypt:</label> <textarea id="to_encrypt" class="form-control">A very secret statement made by an import person.</textarea> </div> <button id="do_encrypt" type="button" class="btn btn-primary">Encrypt Using Python</button> </div> </div> <!-- Encrypted Result Section --> <div class="panel panel-default"> <div class="panel-body"> <label>Encryption Result:</label> <div class="form-horizontal"> <div class="form-group"> <label for="encrypt_key" class="col-sm-2 control-label">Key:</label> <div class="col-sm-10"> <input id="encrypt_key" class="form-control" disabled> </div> </div> <div class="form-group"> <label for="encrypt_iv" class="col-sm-2 control-label">IV:</label> <div class="col-sm-10"> <input id="encrypt_iv" class="form-control" disabled> </div> </div> <div class="form-group"> <label for="encrypt_ct" class="col-sm-2 control-label">Encrypted:</label> <div class="col-sm-10"> <textarea id="encrypt_ct" class="form-control" disabled></textarea> </div> </div> </div> </div> </div> <!-- Decrypt Section --> <div class="panel panel-default"> <div class="panel-body"> <div class="form-group"> <label for="decrypted">Decrypt:</label> <textarea id="decrypted" class="form-control"></textarea> </div> <button id="do_decrypt" type="button" class="btn btn-primary" disabled>Decrypt Using JS</button> </div> </div> </div> <script src="//crypto-js.googlecode.com/svn/tags/3.1.2/build/rollups/aes.js"></script> <script src="//crypto-js.googlecode.com/svn/tags/3.1.2/build/components/mode-cfb.js"></script> <script src="app.js"></script> </body></html>
python PyCrypto加密 server端：
#!/usr/bin/env pythonimport os, jsonimport binasciifrom cgi import parse_header, parse_multipartfrom urlparse import parse_qsfrom BaseHTTPServer import BaseHTTPRequestHandler, HTTPServerfrom Crypto import Randomfrom Crypto.Cipher import AES# ------------------------------# DEFINE Encryption Classclass Cryptor(object): ''' Provide encryption and decryption function that works with crypto-js. https://code.google.com/p/crypto-js/ Padding implemented as per RFC 2315: PKCS#7 page 21 http://www.ietf.org/rfc/rfc2315.txt The key to make pycrypto work with crypto-js are: 1. Use MODE_CFB. For some reason, crypto-js decrypted result from MODE_CBC gets truncated 2. Use Pkcs7 padding as per RFC 2315, the default padding used by CryptoJS 3. On the JS side, make sure to wrap ciphertext with CryptoJS.lib.CipherParams.create() ''' # AES-256 key (32 bytes) KEY = "01ab38d5e05c92aa098921d9d4626107133c7e2ab0e4849558921ebcc242bcb0" BLOCK_SIZE = 16 @classmethod def _pad_string(cls, in_string): '''Pad an input string according to PKCS#7''' in_len = len(in_string) pad_size = cls.BLOCK_SIZE - (in_len % cls.BLOCK_SIZE) return in_string.ljust(in_len + pad_size, chr(pad_size)) @classmethod def _unpad_string(cls, in_string): '''Remove the PKCS#7 padding from a text string''' in_len = len(in_string) pad_size = ord(in_string[-1]) if pad_size > cls.BLOCK_SIZE: raise ValueError('Input is not padded or padding is corrupt') return in_string[:in_len - pad_size] @classmethod def generate_iv(cls, size=16): return Random.get_random_bytes(size) @classmethod def encrypt(cls, in_string, in_key, in_iv=None): ''' Return encrypted string. @in_string: Simple str to be encrypted @key: hexified key @iv: hexified iv ''' key = binascii.a2b_hex(in_key) if in_iv is None: iv = cls.generate_iv() in_iv = binascii.b2a_hex(iv) else: iv = binascii.a2b_hex(in_iv) aes = AES.new(key, AES.MODE_CFB, iv, segment_size=128) return in_iv, aes.encrypt(cls._pad_string(in_string)) @classmethod def decrypt(cls, in_encrypted, in_key, in_iv): ''' Return encrypted string. @in_encrypted: Base64 encoded @key: hexified key @iv: hexified iv ''' key = binascii.a2b_hex(in_key) iv = binascii.a2b_hex(in_iv) aes = AES.new(key, AES.MODE_CFB, iv, segment_size=128) decrypted = aes.decrypt(binascii.a2b_base64(in_encrypted).rstrip()) return cls._unpad_string(decrypted)# ------------------------------# DEFINE HTTP Handlerclass EncryptHandler(BaseHTTPRequestHandler): ''' Simple webserver that server index.html and static "*.html" and "*.js" files, which special "/encrypt" URL that would return a JSON with encrypted data ''' PORT_NUMBER = 8087 SCRIPT_PATH = os.path.dirname(__file__) def _return_http_code(self, http_code): self.send_response(http_code) self.end_headers() def _return_file(self, in_file): ''' ''' if os.path.exists(in_file): with open(in_file) as f: self.send_response(200) if in_file.endswith(".html"): self.send_header('Content-type',"text/html") elif in_file.endswith(".js"): self.send_header('Content-type',"text/javascript") else: self.send_header('Content-type',"text/plain") self.end_headers() self.wfile.write(f.read()) else: self._return_http_code(404) def _return_json(self, in_dict): '''Send JSON back to client from a dictionary''' self.send_response(200) self.send_header('Content-type','application/json') self.end_headers() self.wfile.write(json.dumps(in_dict)) def do_GET(self): ''' Serve static .html and .js files ''' request_path = self.path if request_path == "/": self._return_file("index.html") elif request_path.endswith(".html") or request_path.endswith(".js"): self._return_file(self.SCRIPT_PATH + request_path) else: self._return_http_code(404) return def parse_POST(self): ''' parse POST body ''' ctype, pdict = parse_header(self.headers.getheader('content-type')) if ctype == 'multipart/form-data': postvars = parse_multipart(self.rfile, pdict) elif ctype == 'application/x-www-form-urlencoded': length = int(self.headers.getheader('content-length')) postvars = parse_qs(self.rfile.read(length), keep_blank_values=1) else: postvars = {} return postvars def do_POST(self): ''' Perform the encryption in Python ''' if self.path == "/encrypt": postvars = self.parse_POST() if postvars: to_encrypt = ''.join(postvars["to_encrypt"]) iv, encrypted = Cryptor.encrypt(to_encrypt, Cryptor.KEY) result = { "key": Cryptor.KEY, "iv": iv, "ciphertext": binascii.b2a_base64(encrypted).rstrip() } #print "Encrypt result: %s" % result self._return_json(result) else: print "Error: POST received no data." self._return_http_code(500) else: self._return_http_code(404) return# ------------------------------# START WEB SERVERtry: #Create a web server and define the handler to manage the #incoming request server = HTTPServer(('', EncryptHandler.PORT_NUMBER), EncryptHandler) print 'Started httpserver on port ' , EncryptHandler.PORT_NUMBER #Wait forever for incoming htto requests server.serve_forever()except KeyboardInterrupt: print '^C received, shutting down the web server' server.socket.close()相关内容
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