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hashing functions.
DSS also specifies the encryption algorithms that can be used to
support a digital signature infrastructure. There are three currently
approved standard encryption algorithms:
The Digital Signature Algorithm (DSA) as specified in FIPS 186-4
The Rivest–Shamir–Adleman (RSA) algorithm as specified in
ANSI X9.31
The Elliptic Curve DSA (ECDSA) as specified in ANSI X9.62
Two other digital signature algorithms you should recognize,
at least by name, are Schnorr’s signature algorithm and Nyberg-
Rueppel’s signature algorithm.
