Ensiklopedia Dunia

From Wikipedia, the free encyclopedia

Sosemanuk is a stream cipher developed by Come Berbain, Olivier Billet, Anne Canteaut, Nicolas Courtois, Henri Gilbert, Louis Goubin, Aline Gouget, Louis Granboulan, Cédric Lauradoux, Marine Minier, Thomas Pornin and Hervé Sibert. Along with HC-128, Rabbit, and Salsa20/12, Sosemanuk is one of the final four Profile 1 (software) ciphers selected for the eSTREAM Portfolio.

According to the authors, the structure of the cipher is influenced by the stream cipher SNOW and the block cipher Serpent. The cipher has an improved performance compared with Snow, more specifically by having a faster initialization phase. The cipher key length can vary between 128 and 256 bits, but the guaranteed security is only 128 bits. The cipher uses an initialization vector of 128 bits. Of note, during the eSTREAM Phase 1 evaluation process, it was shown that a theoretical attack with cost 2²²⁴ could be applied, which does not contradict the security claim of "128 bits".

Sosemanuk is not patented and is "free for any use". The name means "snow snake" in the Cree Indian language because it depends both on Snow and Serpent.

External links

eSTREAM page on Sosemanuk
"SOSEMANUK, a fast software-oriented stream cipher", a paper by the cipher's authors
The eSTREAM Portfolio announcement
all eSTREAM announcements

Stream ciphers

Widely used ciphers

eSTREAM Portfolio

Software	HC-128 Rabbit Salsa20 SOSEMANUK
Hardware	Grain MICKEY Trivium

Other ciphers

Generators

Theory

Attacks

v t e Cryptography
General	History of cryptography Outline of cryptography Classical cipher Cryptographic protocol Authentication protocol Cryptographic primitive Cryptanalysis Cryptocurrency Cryptosystem Cryptographic nonce Cryptovirology Hash function Cryptographic hash function Key derivation function Secure Hash Algorithms Digital signature Kleptography Key (cryptography) Key exchange Key generator Key schedule Key stretching Keygen Machines Cryptojacking malware Ransomware Random number generation Cryptographically secure pseudorandom number generator (CSPRNG) Pseudorandom noise (PRN) Secure channel Insecure channel Subliminal channel Encryption Decryption End-to-end encryption Harvest now, decrypt later Information-theoretic security Plaintext Codetext Ciphertext Shared secret Trapdoor function Trusted timestamping Key-based routing Onion routing Garlic routing Kademlia Mix network
Mathematics	Cryptographic hash function Block cipher Stream cipher Symmetric-key algorithm Authenticated encryption Public-key cryptography Quantum key distribution Quantum cryptography Post-quantum cryptography Message authentication code Random numbers Steganography
Category

This cryptography-related article is a stub. You can help Wikipedia by expanding it.

Categories:

Hidden categories: