报错问题解决办法：Decryption error sun.security.rsa.RSAPadding.unpadV15

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报错问题解决办法：Decryption error sun.security.rsa.RSAPadding.unpadV15

出现的问题

javax.crypto.BadPaddingException: Decryption errorat sun.security.rsa.RSAPadding.unpadV15(RSAPadding.java:380) ~[na:1.8.0_131]at sun.security.rsa.RSAPadding.unpad(RSAPadding.java:291) ~[na:1.8.0_131]at com.sun.crypto.provider.RSACipher.doFinal(RSACipher.java:356) ~[sunjce_provider.jar:1.8.0_112]at com.sun.crypto.provider.RSACipher.engineDoFinal(RSACipher.java:389) ~[sunjce_provider.jar:1.8.0_112]at javax.crypto.Cipher.doFinal(Cipher.java:2048) ~[na:1.8.0_121]

解决办法：
采用相同提供者组件
com.sun.crypto.provider.SunJCE

SunJCE provider=new com.sun.crypto.provider.SunJCE();
Security.addProvider(provider);
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm(),provider);

//必须自己生成下面两个密钥private static final String PUBLIC_KEY = "自己生成公钥";private static final String PRIVATE_KEY="自己生成私钥";//

调用方法：

String pwd = RsaUtil.DecryptByPrivateKey(pwd_web);
String web=RsaUtil.encryptByPublicKey(pwd);
String pwd2 = RsaUtil.DecryptByPrivateKey(web);

执行的两个方法代码：

//加密-公 OKpublic static String encryptByPublicKey(String data){String r="";try {byte[] itemResultBytes = encryptByPublicKey(data, PUBLIC_KEY);r= Base64.encode(itemResultBytes);} catch (Exception e) {e.printStackTrace();System.err.println("encryptByPublicKey加密出错:" + e.getMessage() + ":" + "加密内容:" + data);throw new RuntimeException("rsa加密失败");}return r;}//解密-私    OKpublic static String DecryptByPrivateKey(String content){return jsencryptDecryptByPrivateKeyLong(content,PRIVATE_KEY);}