NAME
SHA3_Selftest – NIST FIPS PUB 202: SHA-3 Standard: Permutation-Based Hash and Extendable-Output Functions
LIBRARY
library “libmd”
SYNOPSIS
#include <sha3.h>
int
SHA3_Selftest(void);
DESCRIPTION
The SHA3_Selftest function automatically tests a number of SHA-3 computations on fixed inputs with with known outputs to make sure the sha3(3) library is not catastrophically broken. Applications should call SHA3_Selftest() and confirm that it succeeded before using the sha3(3), or shake(3) functions.
SHA3_Selftest() returns 0 if successful, or -1 if the self-test failed.
The SHA3_Selftest() function costs a few hundred thousand cycles on most CPUs, since it involves a little over a hundred calls to the Keccak permutation, which usually take one or two thousand cycles each.
SEE ALSO
STANDARDS
National Institute of Standards and Technology, SHA-3 Standard: Permutation-Based Hash and Extendable-Output Functions, August 2015, FIPS PUB 202.
AUTHORS
Taylor R Campbell ⟨[email protected]⟩