Digital Signature Algorithm (DSA) (authentication) Federal Information Processing Standard (FIPS) for digital signatures, based on the mathematical concept of modular exponentiation and the discrete logarithm problem. DSA is a variant of the Schnorr and ElGamal signature schemes. DSA signature generation is faster than DSA signature verification. Attributed to David W. Kravitz. Filed under U.S. Patent 5,231,668 July 26, 1991. Adopted by the U.S. government in 1993 with FIPS 186. Wikipedia
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