Java加密技术（五）——非对称加密算法的由来DH_甲乙通信双方进行数据通信,若采用非对称加密算法进行加密,甲发送数据给乙时,以下-优快云博客

 
  getPrivateKey(aKeyMap);  
   
         System.err.println("甲方公钥:\r" + aPublicKey);  
         System.err.println("甲方私钥:\r" + aPrivateKey);  
           
         // 由甲方公钥产生本地密钥对儿  
         Map<String, Object> bKeyMap = DHCoder.initKey(aPublicKey);  
         String bPublicKey = DHCoder.getPublicKey(bKeyMap);  
         String bPrivateKey = DHCoder.getPrivateKey(bKeyMap);  
           
         System.err.println("乙方公钥:\r" + bPublicKey);  
         System.err.println("乙方私钥:\r" + bPrivateKey);  
           
         String aInput = "abc ";  
         System.err.println("原文: " + aInput);  
   
         // 由甲方公钥，乙方私钥构建密文  
         byte[] aCode = DHCoder.encrypt(aInput.getBytes(), aPublicKey,  
                 bPrivateKey);  
   
         // 由乙方公钥，甲方私钥解密  
         byte[] aDecode = DHCoder.decrypt(aCode, bPublicKey, aPrivateKey);  
         String aOutput = (new String(aDecode));  
   
         System.err.println("解密: " + aOutput);  
   
         assertEquals(aInput, aOutput);  
   
         System.err.println(" ===============反过来加密解密================== ");  
         String bInput = "def ";  
         System.err.println("原文: " + bInput);  
   
         // 由乙方公钥，甲方私钥构建密文  
         byte[] bCode = DHCoder.encrypt(bInput.getBytes(), bPublicKey,  
                 aPrivateKey);  
   
         // 由甲方公钥，乙方私钥解密  
         byte[] bDecode = DHCoder.decrypt(bCode, aPublicKey, bPrivateKey);  
         String bOutput = (new String(bDecode));  
   
         System.err.println("解密: " + bOutput);  
   
         assertEquals(bInput, bOutput);  
     }  
   
 }  
 

控制台输出：

    Console代码   
    
  
 甲方公钥:  
 MIHfMIGXBgkqhkiG9w0BAwEwgYkCQQD8poLOjhLKuibvzPcRDlJtsHiwXt7LzR60ogjzrhYXrgHz  
 W5Gkfm32NBPF4S7QiZvNEyrNUNmRUb3EPuc3WS4XAkBnhHGyepz0TukaScUUfbGpqvJE8FpDTWSG  
 kx0tFCcbnjUDC3H9c9oXkGmzLik1Yw4cIGI1TQ2iCmxBblC+eUykAgIBgANDAAJAdAWBVmIzqcko  
 Ej6qFjLDL2+Y3FPq1iRbnOyOpDj71yKaK1K+FhTv04B0zy4DKcvAASV7/Gv0W+bgqdmffRkqrQ==  
   
 甲方私钥:  
 MIHRAgEAMIGXBgkqhkiG9w0BAwEwgYkCQQD8poLOjhLKuibvzPcRDlJtsHiwXt7LzR60ogjzrhYX  
 rgHzW5Gkfm32NBPF4S7QiZvNEyrNUNmRUb3EPuc3WS4XAkBnhHGyepz0TukaScUUfbGpqvJE8FpD  
 TWSGkx0tFCcbnjUDC3H9c9oXkGmzLik1Yw4cIGI1TQ2iCmxBblC+eUykAgIBgAQyAjACJRfy1LyR  
 eHyD+4Hfb+xR0uoIGR1oL9i9Nk6g2AAuaDPgEVWHn+QXID13yL/uDos=  
   
 乙方公钥:  
 MIHfMIGXBgkqhkiG9w0BAwEwgYkCQQD8poLOjhLKuibvzPcRDlJtsHiwXt7LzR60ogjzrhYXrgHz  
 W5Gkfm32NBPF4S7QiZvNEyrNUNmRUb3EPuc3WS4XAkBnhHGyepz0TukaScUUfbGpqvJE8FpDTWSG  
 kx0tFCcbnjUDC3H9c9oXkGmzLik1Yw4cIGI1TQ2iCmxBblC+eUykAgIBgANDAAJAVEYSfBA+I9nr  
 dWw3OBv475C+eBrWBBYqt0m6/eu4ptuDQHwV4MmUtKAC2wc2nNrdb1wmBhY1X8RnWkJ1XmdDbQ==  
   
 乙方私钥:  
 MIHSAgEAMIGXBgkqhkiG9w0BAwEwgYkCQQD8poLOjhLKuibvzPcRDlJtsHiwXt7LzR60ogjzrhYX  
 rgHzW5Gkfm32NBPF4S7QiZvNEyrNUNmRUb3EPuc3WS4XAkBnhHGyepz0TukaScUUfbGpqvJE8FpD  
 TWSGkx0tFCcbnjUDC3H9c9oXkGmzLik1Yw4cIGI1TQ2iCmxBblC+eUykAgIBgAQzAjEAqaZiCdXp  
 2iNpdBlHRaO9ir70wo2n32xNlIzIX19VLSPCDdeUWkgRv4CEj/8k+/yd  
   
 原文: abc   
 解密: abc   
  ===============反过来加密解密==================   
 原文: def   
 解密: def   