unleashed-firmware/applications/plugins/totp/services/hmac/hmac-sha256.h

11 lines
400 B
C

#pragma once
#include <stddef.h>
#define HMAC_SHA256_RESULT_SIZE 32
/* Compute Hashed Message Authentication Code with SHA-256, over BUFFER
data of BUFLEN bytes using the KEY of KEYLEN bytes, writing the
output to pre-allocated 32 byte minimum RESBUF buffer. Return 0 on
success. */
int hmac_sha256 (const void *key, size_t keylen, const void *in, size_t inlen, void *restrict resbuf);