Go Java DES and Base64

Original Address http://blog.csdn.net/tomatozq/article/details/20773559

1,des

    /** * Decryption * @param message * @param key * @return * @t  Hrows Exception */public static string decrypt (string message,string encoding) throws Exception                  {byte[] bytesrc = converthexstring (message);                  Cipher Cipher = cipher.getinstance ("des/cbc/pkcs5padding");                  Deskeyspec Deskeyspec = new Deskeyspec (key.getbytes (encoding));                  Secretkeyfactory keyfactory = secretkeyfactory.getinstance ("DES");                  Secretkey Secretkey = Keyfactory.generatesecret (Deskeyspec);                        Ivparameterspec IV = new IVPARAMETERSPEC (key.getbytes (encoding));                        Cipher.init (Cipher.decrypt_mode, Secretkey, iv);                  byte[] Retbyte = cipher.dofinal (BYTESRC);              return new String (retbyte,encoding);       }/** * Encryption * @param message       * @param key * @return * @throws Exception */public static STR ing encrypt (String message,string encoding) throws Exception {Cipher Cipher = cipher.getinstance ("DES/CB                        C/pkcs5padding ");                        Deskeyspec Deskeyspec = new Deskeyspec (key.getbytes (encoding));                  Secretkeyfactory keyfactory = secretkeyfactory.getinstance ("DES");                  Secretkey Secretkey = Keyfactory.generatesecret (Deskeyspec);                  Ivparameterspec IV = new IVPARAMETERSPEC (key.getbytes (encoding));                        Cipher.init (Cipher.encrypt_mode, Secretkey, iv);                                    byte[] buf = cipher.dofinal (message.getbytes (encoding));                                    String a = tohexstring (BUF). toUpperCase ();              return A;  The/** * string is converted to a 16 binary array * @param SS * @return */            public static byte[] Converthexstring (String ss) {byte digest[] = new Byte[ss.length ()/2]; for (int i = 0; i < digest.length; i++) {String byteString = ss.substring (2 * I                      , 2 * i + 2);                      int bytevalue = Integer.parseint (byteString, 16);                  Digest[i] = (byte) bytevalue;              } return digest; }/** * 16 binary array converted to String * @param b * @return *                  /public static String tohexstring (byte b[]) {StringBuffer hexstring = new StringBuffer (); for (int i = 0; i < b.length; i++) {String plaintext = integer.tohexstring (0xff                      & B[i]);                      if (Plaintext.length () < 2) plaintext = "0" + plaintext;                Hexstring.append (plaintext);  } return hexstring.tostring ();   }

2,base64

    byte[] enc = Base64.encode (enctext.getbytes (encoding), base64.default);      byte[] bytesrc = Base64.decode (enctext.getbytes (encoding), base64.default);  

　　

Go Java DES and Base64