Mir-1
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In cryptography, Mir-1 is a software-oriented stream cipher 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]
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]