Mir-1

In cryptography, Mir-1 is a software-oriented stream cypher algorithm developed by Alexander Maximov. The algorithm was submitted to the eSTREAM project of the eCRYPT network in 2005. Mir-1 is named after the Russian space station Mir.[1]

This article is about cryptology. For other uses, see Mir 1.

Mir-1 uses a multiword T-function with four 64-bit words. The data in each word is processed, generating a keystream.[2] Its key size is 128 bits, and its IV is 64 bits.[1]

The designer claimed that Mir-1 had a security level of 2128, i.e., that it could not be "broken" faster than an exhaustive search. At SASC 2006, a successful key-recovery attack on Mir-1 was shown.[2] Maximov did not dispute the attack, and the algorithm was archived after Phase 1 by the eSTREAM committee.[3]

References
  1. Maximov, Alexander. "A New Stream Cipher 'Mir-1'". Retrieved 14 February 2023.
  2. Tsunoo, Yukiyasu; Saito, Teruo; Kubo, Hiroyasu; Suzaki, Tomoyasu (November 2007). "Cryptanalysis of Mir-1: A T-Function-Based Stream Cipher". IEEE Transactions on Information Theory. 53 (11): 4377–4383. doi:10.1109/TIT.2007.907340. S2CID 6501255. Retrieved 14 February 2023.
  3. Bernstein, Daniel. "Which eSTREAM ciphers have been broken?" (PDF). Retrieved 14 February 2023.
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