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The [[Data Encryption Standard]], or DES, is in some ways an excellent [[block cipher]]; it has withstood

...hine specifically designed and built to speed up brute force against the [[Data Encryption Standard]]) searched a 56-bit key space in an average of a few days. Assume an attac

...and most widely used block ciphers are two US government standards. The [[Data Encryption Standard]] (DES) from the 1970s is now considered obsolete; the [[Advanced Encryptio ..., and it does increase resistance to other attacks; see papers cited for [[Data Encryption Standard#Variations on DES | DES-X]].

| title=Exhaustive Cryptanalysis of the NBS Data Encryption Standard

...riety of applications. [[Block cipher]]s are often done in hardware; the [[Data Encryption Standard]] was originally intended to be implemented only in hardware. For the [[Adv ...chines have been proposed, and several actually built, for attacking the [[Data Encryption Standard]] in this way; for details see the [[Data_Encryption_Standard#DES_history_a

The US government withdrew the last approvals for the [[Data Encryption Standard]], approved for unclassified use in 1976 but now considered quite vulnerabl