This is nothing new, but I just wanted to document it on my blog. Block ciphers encrypt data in blocks of bits. These blocks are generally 64 or 128 bits long. In the ECB (or Electronic Code Book) mode, each block is encrypted independently of the other...

In its own words, " ClubHACK is one of its kind hacker's convention in India which serves as a meeting place for hackers, security professionals, law enforcement agencies and all other security enthusiasts." At ClubHACK, I will talk about some interesting...

The concept of perfect secrecy is that given the cipher text, and any resources and amount of time, the adversary has no way of getting to the plain text. Having the cipher text makes no difference and provides absolutely no additional information. The...