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我有一个给定的加密文本，我想用给定的私钥文件解密它。

我写了这段代码

ObjectInputStream inputStream = new ObjectInputStream( new FileInputStream( PRIVATE_KEY_FILE ) ) ;
PrivateKey privateKey  = (PrivateKey) inputStream.readObject() ;
Cipher cipher      = Cipher.getInstance( "RSA" ) ;
cipher.init( Cipher.DECRYPT_MODE , privateKey ) ;
byte[] decryptedText = cipher.doFinal( dText ) ;  //this is line 56

每当我运行我的代码时，我都会收到此错误。

Exception in thread "main" javax.crypto.BadPaddingException: Blocktype mismatch: 0
        at sun.security.rsa.RSAPadding.unpadV15(RSAPadding.java:328)
        at sun.security.rsa.RSAPadding.unpad(RSAPadding.java:272)
        at com.sun.crypto.provider.RSACipher.doFinal(RSACipher.java:356)
        at com.sun.crypto.provider.RSACipher.engineDoFinal(RSACipher.java:382)
        at javax.crypto.Cipher.doFinal(Cipher.java:2087)
        at RSADecryption.decrypt(RSADecryption.java:56)
        at RSADecryption.main(RSADecryption.java:73)

我怎样才能摆脱这个错误？谢谢...

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