MISTY1

Misty1 (or MISTY- 1) is a 1995 developed by Mitsuru Matsui and others for Mitsubishi Electric symmetric block encryption algorithm. He is one of selected algorithms in NESSIE project and was proposed by CRYPTREC Project of the Japanese government for use.

The name can be used for "Mitsubishi Improved Security Technology ": records (eg "Mitsubishi improved safety technology") or for the initials of the developers involved ( Mitsuru Matsui, Tetsuya Ichikawa, Toru Sorimachi, Toshio Tokita and Atsuhiro Yamagishi ).

Misty1 is a Feistelnetzwerk with a variable number of passages ( each multiple of 4, 8 are recommended) and works with 64 -bit blocks and has a key length of 128 bits. Misty1 has an innovative recursive structure.

It is proven that he is secure against differential and linear cryptanalysis.

The ( described in RFC 2994 ) algorithm is freely available, but it is protected by patents for academic ( non-profit) use.

Other algorithms

Two related designs are MISTY2 and KASUMI. The latter is used in the confidentiality and integrity algorithms in 3GPP mobile phones.