Data Encryption Standard
Sign in to saveEarly unclassified symmetric-key block cipher
Key facts
- Designers
- IBM
- First published
- 1975 (Federal Register) (standardized in January 1977)
- Derived from
- Lucifer
- Successors
- Triple DES , G-DES , DES-X , LOKI89 , ICE
- Key sizes
- 56 bits
- Block sizes
- 64 bits
- Structure
- Balanced Feistel network
via Wikipedia infobox
Article
The Data Encryption Standard (DES /ˌdiːˌiːˈɛs, dɛz/) is a symmetric-key algorithm for the encryption of digital data. Although its short key length of 56 bits makes it too insecure for modern applications, it has been highly influential in the advancement of cryptography.
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 and commercial data. In 1976, after consultation with the National Security Agency (NSA), the NBS selected a slightly modified version (strengthened against differential cryptanalysis, but weakened against brute-force attacks), which was published as an official Federal Information Processing Standard (FIPS) for the United States in 1977.