Polar Bear (cipher)
Encyclopedia
In cryptography
, Polar Bear is a stream cypher
algorithm
designed by Johan Håstad
and Mats Näslund. It has been submitted to the eSTREAM
Project of the eCRYPT
network.
Cryptography
Cryptography is the practice and study of techniques for secure communication in the presence of third parties...
, Polar Bear is a stream cypher
Stream cipher
In cryptography, a stream cipher is a symmetric key cipher where plaintext digits are combined with a pseudorandom cipher digit stream . In a stream cipher the plaintext digits are encrypted one at a time, and the transformation of successive digits varies during the encryption...
algorithm
Algorithm
In mathematics and computer science, an algorithm is an effective method expressed as a finite list of well-defined instructions for calculating a function. Algorithms are used for calculation, data processing, and automated reasoning...
designed by Johan Håstad
Johan Håstad
Johan Torkel Håstad is a Swedish theoretical computer scientist most known for his work on computational complexity theory. He was the recipient of the Gödel Prize in 1994 and 2011 and the ACM Doctoral Dissertation Award in 1986, among other prizes...
and Mats Näslund. It has been submitted to the eSTREAM
ESTREAM
eSTREAM is a project to "identify new stream ciphers suitable for widespread adoption", organised by the EU ECRYPT network. It was set up as a result of the failure of all six stream ciphers submitted to the NESSIE project. The call for primitives was first issued in November 2004. The project was...
Project of the eCRYPT
ECRYPT
ECRYPT is a 4-year European research initiative launched on 1 February 2004.The stated objective is to, "intensify the collaboration of European researchers in information security, and more in particular in cryptology and digital watermarking.ECRYPT list five core research areas, termed "virtual...
network.