The new attack methods show some lacuna in the encryption algorithms and key schedule. As the strength of an encryption algorithm depends on the difficulty of cracking the original message, a number of symmetric key encryption algorithms like DES, TRIPLE DES, AES, BLOWFISH, and RC6 have been developed to provide greater security affects. Most of them are most popular in achieving data security at a great extent like AES. But, as security level is increased, the time and complexity of algorithm is also increased. This is the major cause of decreasing speed and efficiency of the encryption system. This paper presents a new algorithm for block data encryption that enhances the security level. The proposed algorithm is executed with block wise parallel encryption model to decrease the delay time.
展开▼
