Date Added: Dec 2010
Cryptography - a word with Greek origin mean "Secret writing". It refers to the science and art of transforming messages to make them secure and immune to attacks. Research on cryptography is still in its developing stages and considerable research effort is required. This paper is devoted to the security and attack aspects of cryptographic techniques. The authors have discussed the dominant issues of security and various attacks. Finally, he have benchmarked some well-known modern cryptographic algorithms in search for the best compromise in security.