int s2n_hmac_hash_alg()

in crypto/s2n_hmac.c [51:68]

• 18 lines of code
• 10 McCabe index (conditional complexity)

int s2n_hmac_hash_alg(s2n_hmac_algorithm hmac_alg, s2n_hash_algorithm *out)
{
    POSIX_ENSURE(S2N_MEM_IS_WRITABLE_CHECK(out, sizeof(*out)), S2N_ERR_PRECONDITION_VIOLATION);
    switch(hmac_alg) {
    case S2N_HMAC_NONE:       *out = S2N_HASH_NONE;   break;
    case S2N_HMAC_MD5:        *out = S2N_HASH_MD5;    break;
    case S2N_HMAC_SHA1:       *out = S2N_HASH_SHA1;   break;
    case S2N_HMAC_SHA224:     *out = S2N_HASH_SHA224; break;
    case S2N_HMAC_SHA256:     *out = S2N_HASH_SHA256; break;
    case S2N_HMAC_SHA384:     *out = S2N_HASH_SHA384; break;
    case S2N_HMAC_SHA512:     *out = S2N_HASH_SHA512; break;
    case S2N_HMAC_SSLv3_MD5:  *out = S2N_HASH_MD5;    break;
    case S2N_HMAC_SSLv3_SHA1: *out = S2N_HASH_SHA1;   break;
    default:
        POSIX_BAIL(S2N_ERR_HMAC_INVALID_ALGORITHM);
    }
    return S2N_SUCCESS;
}