Abstract:
Today, it is important that information is sent
confidentially over the network without fear of
hackers or unauthorized access to it. Cryptography
was created as a technique for securing the secrecy
of communication and many different methods have
been developed to encrypt and decrypt data in
order to keep the message secret. The proposed
cryptographic system is reconfigurable for the
number of block bits and the number of
cryptographic rounds. In this system, many files
types can encrypt and decrypt by using RC5 and
DES algorithm. The secret key of DES is
transformed into 16 sub keys and consequently
DES takes 16 rounds to perform an encryption. For
RC5 algorithm, rounds key is more than 16. But
this system uses just only 16 rounds. In this system
shows the tables and has included different time for
DES and RC5.
