1/*
2 * Copyright (C) 2017 Metrological Group B.V.
3 * Copyright (C) 2017 Igalia S.L.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
24 * THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <gcrypt.h>
30#include <wtf/Assertions.h>
31#include <wtf/Optional.h>
32
33namespace PAL {
34namespace GCrypt {
35
36// Copied from gcrypt.h. This macro is new in version 1.7.0, which we do not
37// want to require yet. Remove this in summer 2019.
38#ifndef gcry_cipher_final
39#define gcry_cipher_final(a) \
40 gcry_cipher_ctl ((a), GCRYCTL_FINALIZE, NULL, 0)
41#endif
42
43using CipherOperation = gcry_error_t(gcry_cipher_hd_t, void*, size_t, const void*, size_t);
44
45static inline void logError(gcry_error_t error)
46{
47 // FIXME: Use a WebCrypto WTF log channel here once those are moved down to PAL.
48#if !LOG_DISABLED
49 WTFLogAlways("libgcrypt error: source '%s', description '%s'",
50 gcry_strsource(error), gcry_strerror(error));
51#else
52 UNUSED_PARAM(error);
53#endif
54}
55
56static inline Optional<int> aesAlgorithmForKeySize(size_t keySize)
57{
58 switch (keySize) {
59 case 128:
60 return GCRY_CIPHER_AES128;
61 case 192:
62 return GCRY_CIPHER_AES192;
63 case 256:
64 return GCRY_CIPHER_AES256;
65 default:
66 return WTF::nullopt;
67 }
68}
69
70} // namespace GCrypt
71} // namespace PAL
72