DESCRIPTIONDSA is the Digital Signature Algorithm specified in [DSS], a standard for public-key based digital signatures from NIST, the U.S. National Institute for Standards and Technology. DSA employs SHA(5).
For a description of DSS, its history and security, see [AC2].
[DSS] National Institute of standards and Technology, NIST FIPS PUB 186, Digital Signature Standard, U.S. Department of Commerce, May 1994.
[AC2] Bruce Schneier, Applied Cryptography: Protocols, Algorithms and Source Code in C, second edition, John Wiley and Sons, 1996.