what is wrong in java AES decrypt function?
- by rohit
hi,
i modified the code available on
http://java.sun.com/developer/technicalArticles/Security/AES/AES_v1.html
and made encrypt and decrypt methods in program. but i am getting BadpaddingException..
also the function is returning null..
why it is happing?? whats going wrong? please help me..
these are variables i am using:
kgen = KeyGenerator.getInstance("AES");
kgen.init(128);
raw = new byte[]{(byte)0x00,(byte)0x11,(byte)0x22,(byte)0x33,(byte)0x44,(byte)0x55,(byte)0x66,(byte)0x77,(byte)0x88,(byte)0x99,(byte)0xaa,(byte)0xbb,(byte)0xcc,(byte)0xdd,(byte)0xee,(byte)0xff};
skeySpec = new SecretKeySpec(raw, "AES");
cipher = Cipher.getInstance("AES");
plainText=null;
cipherText=null;
following is decrypt function..
public String decrypt(String cipherText)
{
try
{
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] original = cipher.doFinal(cipherText.getBytes());
plainText = new String(original);
}
catch(BadPaddingException e)
{
}
return plainText;
}
