des - Computer Definition
An encryption standard developed by IBM and adopted by the United States government in 1976 for non-classified applications. DES also was widely used by financial institutions for electronic financial transfers. DES uses a 56-bit key, which subsequently proved to be vulnerable to attack as computer processors increased in speed and cryptanalysis tools became more sophisticated. DES has since been superseded by standards such as Advanced Encryption Standard (AES) and Triple DES. See also AES, encryption, security, and Triple DES.
(1) (Digital Entertainment System) See digital media server.
(2) (Data Encryption Standard) A NIST-standard cryptographic cipher that uses a 56-bit key. Adopted by the NIST in 1977, it was replaced by AES in 2001 as the official standard. DES is a symmetric block cipher that processes 64-bit blocks in four different modes of operation, with the electronic code book (ECB) being the most popular. Triple DES By adding various multiple-pass methods, Triple DES increased security; for example, encrypting with one key, decrypting the results with a second key and encrypting it again with a third. However, the extra passes added considerable computing time to the process. DES is still used in applications that do not require the strongest security. See cipher, cryptography, NIST, AES and Fortezza.