Digital Signature Standard definition cryptography, standard
for digital signatures
(authenticating both a message and the signer) that was first announced in 1991. It is based on an algorithm
using discrete logarithms, which is a variant of the Elgamal algorithm with Schnorr's improvements. DSS's security is currently considered very strong - comparable to RSA
. It is estimated that DSS's 1024-bit keys would take 1.4E16 MIPS
-years to crack.