nettle-hmac.c

 
#include <string.h>   /* memset() */
#include "config.h"   /* HAVE_DIGEST_LENGTH_ARG */
#include "rc-hmac.h"
 
void hmac_md5_with_nettle(uint8_t *data, size_t  data_len,
                          uint8_t *key,  size_t  key_len,
                          uint8_t  digest[MD5_DIGEST_SIZE])
{
    struct hmac_md5_ctx md5;
    memset(digest, 0, MD5_DIGEST_SIZE);
    hmac_md5_set_key(&md5, key_len, key);
    hmac_md5_update(&md5, data_len, data);
#ifdef HAVE_DIGEST_LENGTH_ARG
    hmac_md5_digest(&md5, MD5_DIGEST_SIZE, digest);
#else
    hmac_md5_digest(&md5, digest);
#endif
}