Number | Name | Date | Kind |
---|---|---|---|
3958081 | Ehrsam et al. | May 1976 | |
3962539 | Ehrsam et al. | Jun 1976 | |
4405829 | Rivest et al. | Sep 1983 | |
4941176 | Matyas et al. | Jul 1990 | |
5142578 | Matyas et al. | Aug 1992 |
Entry |
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ANSI X 3.92, 1981, "Data Encryption Algorithm". |