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Data Encryption Standard

Wikipedia English The Free Encyclopedia

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Data Encryption Standard
The Data Encryption Standard (DES, or ) is a previously predominant symmetric-key algorithm for the encryption of electronic data. It was highly influential in the advancement of modern cryptography in the academic world. Developed in the early 1970s at IBM and based on an earlier design by Horst Feistel, the algorithm was submitted to the National Bureau of Standards (NBS) following the agency's invitation to propose a candidate for the protection of sensitive, unclassified electronic government data. In 1976, after consultation with the National Security Agency (NSA), the NBS eventually selected a slightly modified version, which was published as an official Federal Information Processing Standard (FIPS) for the United States in 1977. The publication of an NSA-approved encryption standard simultaneously resulted in its quick international adoption and widespread academic scrutiny. Controversies arose out of classified design elements, a relatively short key length of the symmetric-key block cipher design, and the involvement of the NSA, nourishing suspicions about a backdoor. The intense academic scrutiny the algorithm received over time led to the modern understanding of block ciphers and their cryptanalysis.

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Wikipedia Nederlands De vrije encyclopedie

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Data Encryption Standard
De Data Encryption Standard (DES) is een methode om gegevens met symmetrische cryptografie te versleutelen.

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Wikipedia Español La enciclopedia libre

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Data Encryption Standard
Data Encryption Standard (DES) es un algoritmo de cifrado, es decir, un método para cifrar información, escogido como un estándar FIPS en los Estados Unidos en 1976, y cuyo uso se ha propagado ampliamente por todo el mundo. El algoritmo fue controvertido al principio, con algunos elementos de diseño clasificados, una longitud de clave relativamente corta, y las continuas sospechas sobre la existencia de alguna puerta trasera para la National Security Agency (NSA). Posteriormente DES fue sometido a un intenso análisis académico y motivó el concepto moderno del cifrado por bloques y su criptoanálisis.

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Wikipedia Deutsch Die freie Enzyklopädie

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Data Encryption Standard
Der Data Encryption Standard (DES) ist ein weit verbreiteter symmetrischer Verschlüsselungsalgorithmus.

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© Dieser Eintrag beinhaltet Material aus Wikipedia und ist lizensiert auf GNU-Lizenz für freie Dokumentation

Wikipédia Français

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Data Encryption Standard
Le Data Encryption Standard (DES) est un algorithme de chiffrement symétrique (chiffrement par bloc) utilisant des clés de 56 bits. Son emploi n'est plus recommandé aujourd'hui, du fait de sa lenteur à l'exécution et de son espace de clés trop petit permettant une attaque systématique en un temps raisonnable. Quand il est encore utilisé c'est généralement en Triple DES, ce qui ne fait rien pour améliorer ses performances. DES a notamment été utilisé dans le système de mots de passe UNIX.

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© Cet article se sert du contenu de Wikipédia® et est autorisé sous les termes de la Licence de Documentation libre GNU

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