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In cryptography, the S-1 block cipher was a block cipher posted in source code form on Usenet on 11 August 1995. Although incorrect security markings immediately indicated a hoax, there were several features of the code which suggested it might be leaked source code for the Skipjack cipher, which was still classified at the time.

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  • En cryptographie, S-1 est un algorithme de chiffrement par bloc dont le code source fut diffusé sur Usenet le 11 août 1995. Dans un premier temps les commentaires du code source laissent supposer qu'il pourrait s'agir de Skipjack, un algorithme de chiffrement alors utilisé par la NSA et gardé secret, ou au moins d'une version préliminaire. Le cryptologue David Wagner découvre cependant plusieurs failles grossières dans l'algorithme, laissant supposer que la prétendue fuite serait un canular informatique (hoax). En 1998 le code de Skipjack est déclassifié. Son étude confirme sans ambiguïté que S-1 était bien un canular. (fr)
  • In cryptography, the S-1 block cipher was a block cipher posted in source code form on Usenet on 11 August 1995. Although incorrect security markings immediately indicated a hoax, there were several features of the code which suggested it might be leaked source code for the Skipjack cipher, which was still classified at the time. However once David Wagner had discovered a severe design flaw, involving the key schedule but not the underlying round function, it was generally accepted as being a hoax—but one with an astonishing amount of work behind it. Bruce Schneier noted that S-1 contained a feature never seen before in the open literature; a G-table that results in key and data dependent rotation of S-boxes to use in a given round. When Skipjack was eventually declassified in 1998, it was indeed found to be totally unlike S-1. (en)
  • In crittografia la sigla S-1 identifica un cifrario a blocchi il cui codice sorgente è stato pubblicato su Usenet l'11 agosto 1995. Le analisi successive alla sua pubblicazione pubblicate da David Wagner lo hanno identificato come bufala. Si pensa però che l'S-1 sia stato un tentativo (fallito) di ingegneria inversa dello Skipjack, un cifrario che a quel tempo era coperto da segreto militare. Nel 1998, anno in cui è stato declassificato lo Skipjack, si è visto come il suo codice sia totalmente differente da quello dell'S-1. (it)
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  • In crittografia la sigla S-1 identifica un cifrario a blocchi il cui codice sorgente è stato pubblicato su Usenet l'11 agosto 1995. Le analisi successive alla sua pubblicazione pubblicate da David Wagner lo hanno identificato come bufala. Si pensa però che l'S-1 sia stato un tentativo (fallito) di ingegneria inversa dello Skipjack, un cifrario che a quel tempo era coperto da segreto militare. Nel 1998, anno in cui è stato declassificato lo Skipjack, si è visto come il suo codice sia totalmente differente da quello dell'S-1. (it)
  • En cryptographie, S-1 est un algorithme de chiffrement par bloc dont le code source fut diffusé sur Usenet le 11 août 1995. Dans un premier temps les commentaires du code source laissent supposer qu'il pourrait s'agir de Skipjack, un algorithme de chiffrement alors utilisé par la NSA et gardé secret, ou au moins d'une version préliminaire. Le cryptologue David Wagner découvre cependant plusieurs failles grossières dans l'algorithme, laissant supposer que la prétendue fuite serait un canular informatique (hoax). (fr)
  • In cryptography, the S-1 block cipher was a block cipher posted in source code form on Usenet on 11 August 1995. Although incorrect security markings immediately indicated a hoax, there were several features of the code which suggested it might be leaked source code for the Skipjack cipher, which was still classified at the time. (en)
rdfs:label
  • S-1 (it)
  • S-1 (chiffrement) (fr)
  • S-1 block cipher (en)
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