SHA3_SELFTEST(3)

NAME
SHA3_Selftest - NIST FIPS PUB 202: SHA-3 Standard: Permutation-Based Hash and Extendable-Output Functions

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), SHAKE(3), or keccak(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
keccak(3), sha3(3), SHAKE(3)

STANDARDS
National Institute of Standards and Technology, SHA-3 Standard: Permutation-Based Hash and Extendable-Output Functions, FIPS PUB 202, August 2015.

AUTHORS
Taylor R Campbell <campbell+sha3@mumble.net>