本篇文章为大家展示了如何在java中实现DH非对称加密算法，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
初始化发送方密钥：
计算
安全
数据库
网络和加速
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KeyPairGenerator sendKeyPairGenerator = KeyPairGenerator.getInstance("DH");
sendKeyPairGenerator.initialize(512);
KeyPair sendKeyPair = sendKeyPairGenerator.generateKeyPair();
byte[] sendPublicKeyEnc = sendKeyPair.getPublic().getEncoded();//生成发送方公钥，发送给接收方（网络、文件...）初始化接收方密钥：
KeyFactory receiverKeyFactory = KeyFactory.getInstance("DH");
X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(sendPublicKeyEnc);
PublicKey receivePublicKey = receiverKeyFactory.generatePublic(x509EncodedKeySpec);
DHParameterSpec dhParameterSpec = ((DHPublicKey)receivePublicKey).getParams();
KeyPairGenerator receiverKeyPairGenerator = KeyPairGenerator.getInstance("DH");
receiverKeyPairGenerator.initialize(dhParameterSpec);
KeyPair receiverKeyPair = receiverKeyPairGenerator.generateKeyPair();
PrivateKey receiverPrivateKey = receiverKeyPair.getPrivate();
byte[] receiverPublicKeyEnc = receiverKeyPair.getPublic().getEncoded();构建接收方密钥：
KeyAgreement receiverKeyAgreement = KeyAgreement.getInstance("DH");
receiverKeyAgreement.init(receiverPrivateKey);
receiverKeyAgreement.doPhase(receivePublicKey, true);
SecretKey receiverDESKey = receiverKeyAgreement.generateSecret("DES");//接收方Key构建发送方密钥：
KeyFactory sendKeyFactory = KeyFactory.getInstance("DH");
x509EncodedKeySpec = new X509EncodedKeySpec(receiverPublicKeyEnc);
PublicKey sendPublicKey = sendKeyFactory.generatePublic(x509EncodedKeySpec);
KeyAgreement sendKeyAgreement = KeyAgreement.getInstance("DH");
sendKeyAgreement.init(sendKeyPair.getPrivate());
sendKeyAgreement.doPhase(sendPublicKey, true);
SecretKey sendDESKey = sendKeyAgreement.generateSecret("DES");//发送方Key发送方加密：
Cipher sendCipher = Cipher.getInstance("DES");
sendCipher.init(Cipher.ENCRYPT_MODE, sendDESKey);
byte[] sendResult = sendCipher.doFinal(src.getBytes());
System.out.println("sendResult ："+Hex.encodeHexString(sendResult));接收方解密：
Cipher receiverCipher = Cipher.getInstance("DES");
receiverCipher.init(Cipher.DECRYPT_MODE, receiverDESKey);
byte[] receiverResult = receiverCipher.doFinal(sendResult);
System.out.println("receiverResult : "+new String (receiverResult));上述内容就是如何在java中实现DH非对称加密算法，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注亿速云行业资讯频道。
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