DES

File Format
Name	DES
Ontology	Electronic File Formats Encryption DES
Released	1977

Data Encryption Standard (DES) is a standard block cipher (a building block for data encryption algorithms). It is considered to be obsolete.

It has a block size of 64 bits, and a key length of 56 bits.

See also

• passwd#Password field
• Triple DES

Specifications

• FIPS PUB 46 (1977)
• FIPS PUB 46-1 (1988)
• FIPS PUB 46-2 (1993)
• FIPS PUB 46-3 (1999)

Links

• FIPS PUB 81 (1980): DES Modes of Operation
• FIPS PUB 74 (1981): DES implementation guidelines
• Wikipedia article
• Wikipedia: DES supplementary material