Abstract:
Nowadays the Internet has a huge importance in people’s lives. It offers a lot of possibilities, such as: e-commerce, mailing, chatting, data transfer, etc. All this methods of communication are not secured, because Ethernet Networks liable to having sniffers and someone can read or stole your confidential information. So there appears necessity to protect the information which flows through the NET, called data encryption. Today, there are a big amount of encryption algorithms, like DES, Triple-DES or Blowfish, but how older is the algorithm the higher is probability to find some bugs in it (from Cryptanalysis point of view).