cryptography, standard The NIST's standard for digitalsignatures (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.