Encrypt with AES::encrypt but, how to decrypt with Java?

Hello.

 

 

With Java, you must get a Cypher:

 

 

Cipher decryptCipher = Cipher.getInstance("AES");

 

decryptCipher.init(Cipher.DECRYPT_MODE, getSecretKey());

 

byte[] deciphertext = decryptCipher.doFinal(encripted);

 

String decryptedString = new String(deciphertext);

 

 

But this code causes this error:

 

javax.crypto.IllegalBlockSizeException: 9 trailing bytes

 

at gnu.javax.crypto.jce.cipher.CipherAdapter.engineDoFinal(libgcj.so.90)

 

at javax.crypto.Cipher.doFinal(libgcj.so.90)

 

at javax.crypto.Cipher.doFinal(libgcj.so.90)

 

 

The problem is with PADDING, but I don't know exactly where does the problem is.

 

When I get the Cipher, I can choose with diferent options:

 

 

Cipher decryptCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

 

Cipher decryptCipher = Cipher.getInstance("AES/CBC/PKCS7Padding");

 

Cipher decryptCipher = Cipher.getInstance("AES/CFB8/NoPadding");

 

...

 

 

Maybe the problem is I don't get the good Cipher.

 

Can anybody help me?

 

 

Thanks.