int s2n_hash_hmac_alg()

in crypto/s2n_hmac.c [33:49]

• 17 lines of code
• 9 McCabe index (conditional complexity)

int s2n_hash_hmac_alg(s2n_hash_algorithm hash_alg, s2n_hmac_algorithm *out)
{
    POSIX_ENSURE(S2N_MEM_IS_WRITABLE_CHECK(out, sizeof(*out)), S2N_ERR_PRECONDITION_VIOLATION);
    switch(hash_alg) {
    case S2N_HASH_NONE:       *out = S2N_HMAC_NONE;   break;
    case S2N_HASH_MD5:        *out = S2N_HMAC_MD5;    break;
    case S2N_HASH_SHA1:       *out = S2N_HMAC_SHA1;   break;
    case S2N_HASH_SHA224:     *out = S2N_HMAC_SHA224; break;
    case S2N_HASH_SHA256:     *out = S2N_HMAC_SHA256; break;
    case S2N_HASH_SHA384:     *out = S2N_HMAC_SHA384; break;
    case S2N_HASH_SHA512:     *out = S2N_HMAC_SHA512; break;
    case S2N_HASH_MD5_SHA1:   /* Fall through ... */
    default:
        POSIX_BAIL(S2N_ERR_HASH_INVALID_ALGORITHM);
    }
    return S2N_SUCCESS;
}