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data encryption standard

data encryption standard in Technology

(DES) The NBS's popular, standard encryption algorithm. It is a product cipher that operates on 64-bit blocks of data, using a 56-bit key. It is defined in FIPS 46-1 (1988) (which supersedes FIPS 46 (1977)). DES is identical to the ANSI standard Data Encryption Algorithm (DEA) defined in ANSI X3.92-1981.
DES has been implemented in VLSI. SunOS provides a des command which can make use of DES hardware if fitted. Neither the software nor the hardware are supposed to be distributed outside the USA.
Unix manual pages: des(1), des(3), des(4).
(1994-12-06)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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