The Multics encipher_Algorithm
2007; Taylor & Francis; Volume: 31; Issue: 4 Linguagem: Inglês
10.1080/01611190701506105
ISSN1558-1586
AutoresW. Olin Sibert, Robert W. Baldwin,
Tópico(s)Cryptographic Implementations and Security
ResumoAbstract A fast software block encryption algorithm with a 72-bit key was written by (then) Major Roger R. Schell (United States Air Force) in April 1973 and released as part of the source code for the Multics operating system. The design of the Multics encipher_ algorithm includes features such as variable data-dependent rotations that were not published until the 1990s—20 years after the Multics cipher. This article describes the history and details of the Multics encipher_algorithm and how it was used for Key Generation, File Encryption, and Password Hashing. A cryptographic analysis of the algorithm has not been performed, although similarities are noted with algorithms such as XTEA, SEAL, and RC5.
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