"MISTY" redirects here. For other uses, see Misty.
MISTY1
General
Designers
Mitsuru Matsui,
Tetsuya Ichikawa,
Toru Sorimachi,
Toshio Tokita,
Atsuhiro Yamagishi
First published
1995
Successors
Camellia, KASUMI
Certification
CRYPTREC (Candidate), NESSIE
Cipher detail
Key sizes
128 bits
Block sizes
64 bits
Structure
Nested Feistel network
Rounds
4×n (8 recommended)
Best public cryptanalysis
Integral cryptanalysis leading to full key recovery with 263.9999 chosen ciphertexts and 279 time, or 264 chosen ciphertexts and 269.5 time.[1]
In cryptography, MISTY1 (or MISTY-1) is a block cipher designed in 1995 by Mitsuru Matsui and others for Mitsubishi Electric.[2][3]
MISTY1 is one of the selected algorithms in the European NESSIE project, and has been among the cryptographic techniques recommended for Japanese government use by CRYPTREC in 2003; however, it was dropped to "candidate" by CRYPTREC revision in 2013. However, it was successfully broken in 2015 by Yosuke Todo using integral cryptanalysis; this attack was improved in the same year by Achiya Bar-On.[1]
"MISTY" can stand for "Mitsubishi Improved Security Technology"; it is also the initials of the researchers involved in its development: Matsui Mitsuru, Ichikawa Tetsuya, Sorimachi Toru, Tokita Toshio, and Yamagishi Atsuhiro.[4]
MISTY1 is covered by patents, although the algorithm is freely available for academic (non-profit) use in RFC 2994, and there's a GPLed implementation by Hironobu Suzuki (used by, e.g. Scramdisk).
^ abAchiya Bar-On (30 July 2015). "A 270 Attack on the Full MISTY1" (PDF).
^Mitsuru Matsui (1997). Block encryption algorithm MISTY. Fast Software Encryption, 4th International Workshop, FSE '97, LNCS 1267. pp. 64–74. ISBN 9783540632474.
^Mitsuru Matsui (July 1996). "Block encryption algorithm MISTY". Technical report of IEICE ISEC96-11(PDF). Archived from the original (PDF) on August 23, 2000.
^"Episodes in the development of MISTY". Archived from the original on 2005-03-22.
In cryptography, MISTY1 (or MISTY-1) is a block cipher designed in 1995 by Mitsuru Matsui and others for Mitsubishi Electric. MISTY1 is one of the selected...
had already undergone some evaluation. They chose the cipher algorithm MISTY1 developed and patented by Mitsubishi Electric Corporation. The original...
networks can be used as a component of a cipher's design. For example, MISTY1 is a Feistel cipher using a three-round Feistel network in its round function...
further development. However, because it contains an implementation of the MISTY1 Encryption Algorithm (by Hironobu Suzuki, a.k.a. H2NP) licensed under the...
of ETH Zurich Iraqi Block Cipher (IBC) KASUMI – 64-bit block; based on MISTY1, adopted for next generation W-CDMA cellular phone security KHAZAD – 64-bit...
Korean television series Mist (disambiguation) Misty Blue (disambiguation) MISTY1, a cryptographic algorithm This disambiguation page lists articles associated...
distribution center (KDC) Key management Key stream KSD-64 Link encryption MISTY1 Multiplex link encryption Net control station (NCS) Null cipher One-time...
– plus some "incompatible operations"). It also has some resemblance to MISTY1 in the recursiveness of its structure: the 128-bit full cipher is a Feistel...
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