I am trying to test the Bouncy castle API for data encryption and decrytion using DES technique. During encryption and decryption the block of data I need to maintain, I need to padd the user data,I am not clear what is the minimum number of block. Because I am getting exception InvalidCipherTextException, some data like last block corrupted.
Can you please help me regarding padding and all.
Actually I have one client server architecture, midlet and servlet, now first user send userid and password and after authentication server send an encrypted message, but I am getting the exception "InvalidCipherTextException", some data like last block corrupted.