| US Federal Information Processing Standards Publication (FIPS PUB) 81. DES Modes of Operation , 2 December 1980. |
....It is not comforting to know that the security of a network relies on its low quality of service. 4 Rather than go to such lengths, it is simpler to use a cryptographic algorithm (or device) for ISN S generation. The Data Encryption Standard [11] DES) in electronic codebook mode [12] is an attractive choice as the ISN S source, with a simple counter as input. Alternatively, DES could be used in output feedback mode without an additional counter. Either way, great care must be taken to select the key used. The time of day at boot time is not adequate; sufficiently good ....
US Federal Information Processing Standards Publication (FIPS PUB) 81. DES Modes of Operation , 2 December 1980.
....short term, especially on long haul connections. It is not comforting to know that the security of a network relies on its low quality of service. 4 Rather than go to such lengths, it is simpler to use a cryptographic algorithm (or device) for ISN S generation. The Data Encryption Standard [11] (DES) in electronic codebook mode [12] is an attractive choice as the ISN S source, with a simple counter as input. Alternatively, DES could be used in output feedback mode without an additional counter. Either way, great care must be taken to select the key used. The time of day at boot time ....
US Federal Information Processing Standards Publication (FIPS PUB) 46, Data Encryption Standard , 15 January 1977.
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