Error added: 2009-11-02T22:59:10Z
If you try to decrypt PKCS5-padded data with the wrong key, and then unpad it (which is done by the Cipher class automatically), you most likely will get the BadPaddingException (with probably of slightly less than 255/256, around 99.61%), because the padding has a special structure which is validated during unpad and very few keys would produce a valid padding. So, if you get this exception, catch it and treat it as "wrong key".
If you know the answer, please add your own solution below.
If you don't know, but find out later, please come back and share your answer - there will be other people
struggling with this too.
If you want to be notified via email when this is solved, enter your email address here: