RT Web Page DB /z-wcorg/ DS http://worldcat.org ID 840397578 LA English UL http://dx.doi.org/10.1007/978-1-4471-5079-4 T1 Stream ciphers A1 Klein, Andreas., PB Springer PP London; New York YR 2013 SN 9781447150794 1447150791 1447150783 9781447150787 AB In cryptography, ciphers is the technical term for encryption and decryption algorithms. They are an important sub-family that features high speed and easy implementation and are an essential part of wireless internet and mobile phones. Unlike block ciphers, stream ciphers work on single bits or single words and need to maintain an internal state to change the cipher at each step. Typically stream ciphers can reach higher speeds than block ciphers but they can be more vulnerable to attack. Here, mathematics comes into play. Number theory, algebra and statistics are the key to a better understa.