Number | Date | Country | Kind |
---|---|---|---|
63-103919 | Apr 1988 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4319079 | Best | Mar 1982 |
Entry |
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Koyama et al., "Modern Theory of Encryption", The Institute of Electronics and Communications Engineers of Japan; pp. 41-62; Sept., 1986 (in Japanese). |
Shimizu et al., "Fast Data Encipherment Algorithm Feal"; Papers of the Institute of Electronics and Communication Engineers of Japan; D. vol. J70-D, No. 7, pp. 1413-1423; Jul., 1987 (in Japanese). |