|
| US4107458 | 23 Aug 1976 | 15 Aug 1978 | | Cipher computer and cryptographic system |
| US4133973 | 10 Nov 1976 | 9 Jan 1979 | Datotek, Inc. | Digital cryptographic system having synchronous and asynchronous capabilities |
| US4166922 | 9 Sep 1977 | 4 Sep 1979 | Datotek, Inc. | Multi-mode digital enciphering system with repeated priming sequences |
| US4747139 | 21 Oct 1986 | 24 May 1988 | | Software security method and systems |
| US4972474 | 1 May 1989 | 20 Nov 1990 | Cylink Corporation | Integer encryptor |
| US7539234 | 28 Sep 2004 | 26 May 2009 | Mitsubishi Denki Kabushiki Kaisha | System and device for modulating UWB pulse sequences |
| US7577188 | 13 Sep 2001 | 18 Aug 2009 | Cisco Technology, Inc. | Physical layer and MAC enhancements using complex sequences on a wireless channel |
