这期内容当中小编将会给大家带来有关如何在java中实现RSA非对称加密算法，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。
初始化密钥：
计算
安全
数据库
网络和加速
企业服务
KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
keyPairGenerator.initialize(512);
KeyPair keyPair = keyPairGenerator.generateKeyPair();
RSAPrivateKey rsaprivateKey = (RSAPrivateKey)keyPair.getPrivate();//私有密钥
RSAPublicKey rsapublicKey = (RSAPublicKey)keyPair.getPublic();//公有密钥
System.out.println("privateKey : "+Base64.encodeBase64String(rsaprivateKey.getEncoded()));
System.out.println("publicKey : "+Base64.encodeBase64String(rsapublicKey.getEncoded()));1、私钥加密，公钥解密：
//私钥加密，公钥解密--加密
PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(rsaprivateKey.getEncoded());
KeyFactory privateKeyFactory = KeyFactory.getInstance("RSA");
PrivateKey privateKey = privateKeyFactory.generatePrivate(pkcs8EncodedKeySpec);
Cipher privateCipher = Cipher.getInstance("RSA");
privateCipher.init(Cipher.ENCRYPT_MODE, privateKey);
byte[] result = privateCipher.doFinal(src.getBytes());
System.out.println("私钥加密，公钥解密--加密:"+Base64.encodeBase64String(result));
//私钥加密，公钥解密--解密
X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(rsapublicKey.getEncoded());
KeyFactory publicKeyFactory = KeyFactory.getInstance("RSA");
PublicKey publicKey = publicKeyFactory.generatePublic(x509EncodedKeySpec);
Cipher publicCipher = Cipher.getInstance("RSA");
publicCipher.init(Cipher.DECRYPT_MODE, publicKey);
result = publicCipher.doFinal(result);
System.out.println("私钥加密，公钥解密--解密:"+new String(result));2、公钥加密，私钥解密：
//公钥加密，私钥解密---加密
x509EncodedKeySpec = new X509EncodedKeySpec(rsapublicKey.getEncoded());
publicKeyFactory = KeyFactory.getInstance("RSA");
publicKey = publicKeyFactory.generatePublic(x509EncodedKeySpec);
publicCipher = Cipher.getInstance("RSA");
publicCipher.init(Cipher.ENCRYPT_MODE, publicKey);
result = publicCipher.doFinal(src.getBytes());
System.out.println("公钥加密，私钥解密---加密:"+Base64.encodeBase64String(result));
//公钥加密，私钥解密---解密
pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(rsaprivateKey.getEncoded());
privateKeyFactory = KeyFactory.getInstance("RSA");
privateKey = privateKeyFactory.generatePrivate(pkcs8EncodedKeySpec);
privateCipher = Cipher.getInstance("RSA");
privateCipher.init(Cipher.DECRYPT_MODE, privateKey);
result = privateCipher.doFinal(result);
System.out.println("公钥加密，私钥解密---解密:"+new String(result));上述就是小编为大家分享的如何在java中实现RSA非对称加密算法了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注亿速云行业资讯频道。
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