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Annotated edit history of DES version 11, including all changes. View license author blame.
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8 PerryLorier 1 [Acronym] for __D__ata __E__ncryption __S__tandard
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3 A very widely used and widely studied encryption algorithm. It was designed by a team at [IBM] under guidance from the [NSA] and standardized by the [NIST]. There are a number of variants, including [3DES]. Its designated successor is [AES].
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5 An [NSA] recommendation that [DES] implementations shouldn't use certain parts of the keyspace led to a lot of controversy about whether a backdoor/flaw that allowed [NSA] to break [DES] encrypted messages existed. A new attack on ciphers found after [DES] being in use for about 30 years was successful against almost all ciphers at the time, including [DES] for that the part of the keyspace. Many believe that [NSA] knew about this attack (30 years before everyone else!) and "fixed" [DES] to be safe against it. Take this little story with a grain of salt and use your tin foil hat.
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7 See also:
8 * [DES Overview | http://www.tropsoft.com/strongenc/des.htm] explains how [DES] works
9 * [Official standard definition | http://www.itl.nist.gov/fipspubs/fip46-2.htm] at [NIST]
11 AristotlePagaltzis 10 * BruceSchneier's [The Legacy of DES | http://www.schneier.com/blog/archives/2004/10/the_legacy_of_d.html]
8 PerryLorier 11
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13 CategoryCryptography

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