int s2n_hash_digest_size()

in crypto/s2n_hash.c [99:117]

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

int s2n_hash_digest_size(s2n_hash_algorithm alg, uint8_t *out)
{
    POSIX_ENSURE(S2N_MEM_IS_WRITABLE_CHECK(out, sizeof(*out)), S2N_ERR_PRECONDITION_VIOLATION);
    /* clang-format off */
    switch (alg) {
        case S2N_HASH_NONE:     *out = 0;                    break;
        case S2N_HASH_MD5:      *out = MD5_DIGEST_LENGTH;    break;
        case S2N_HASH_SHA1:     *out = SHA_DIGEST_LENGTH;    break;
        case S2N_HASH_SHA224:   *out = SHA224_DIGEST_LENGTH; break;
        case S2N_HASH_SHA256:   *out = SHA256_DIGEST_LENGTH; break;
        case S2N_HASH_SHA384:   *out = SHA384_DIGEST_LENGTH; break;
        case S2N_HASH_SHA512:   *out = SHA512_DIGEST_LENGTH; break;
        case S2N_HASH_MD5_SHA1: *out = MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH; break;
        default:
            POSIX_BAIL(S2N_ERR_HASH_INVALID_ALGORITHM);
    }
    /* clang-format on */
    return S2N_SUCCESS;
}