1/*
2 * Copyright (c) 2017 Thomas Pornin <pornin@bolet.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25#include "inner.h"
26
27/* see bearssl_ssl.h */
28void
29br_ssl_engine_set_default_aes_gcm(br_ssl_engine_context *cc)
30{
31#if BR_AES_X86NI || BR_POWER8
32	const br_block_ctr_class *ictr;
33	br_ghash ighash;
34#endif
35
36	br_ssl_engine_set_gcm(cc,
37		&br_sslrec_in_gcm_vtable,
38		&br_sslrec_out_gcm_vtable);
39#if BR_AES_X86NI
40	ictr = br_aes_x86ni_ctr_get_vtable();
41	if (ictr != NULL) {
42		br_ssl_engine_set_aes_ctr(cc, ictr);
43	} else {
44#if BR_64
45		br_ssl_engine_set_aes_ctr(cc, &br_aes_ct64_ctr_vtable);
46#else
47		br_ssl_engine_set_aes_ctr(cc, &br_aes_ct_ctr_vtable);
48#endif
49	}
50#elif BR_POWER8
51	ictr = br_aes_pwr8_ctr_get_vtable();
52	if (ictr != NULL) {
53		br_ssl_engine_set_aes_ctr(cc, ictr);
54	} else {
55#if BR_64
56		br_ssl_engine_set_aes_ctr(cc, &br_aes_ct64_ctr_vtable);
57#else
58		br_ssl_engine_set_aes_ctr(cc, &br_aes_ct_ctr_vtable);
59#endif
60	}
61#else
62#if BR_64
63	br_ssl_engine_set_aes_ctr(cc, &br_aes_ct64_ctr_vtable);
64#else
65	br_ssl_engine_set_aes_ctr(cc, &br_aes_ct_ctr_vtable);
66#endif
67#endif
68#if BR_AES_X86NI
69	ighash = br_ghash_pclmul_get();
70	if (ighash != 0) {
71		br_ssl_engine_set_ghash(cc, ighash);
72		return;
73	}
74#endif
75#if BR_POWER8
76	ighash = br_ghash_pwr8_get();
77	if (ighash != 0) {
78		br_ssl_engine_set_ghash(cc, ighash);
79		return;
80	}
81#endif
82#if BR_LOMUL
83	br_ssl_engine_set_ghash(cc, &br_ghash_ctmul32);
84#elif BR_64
85	br_ssl_engine_set_ghash(cc, &br_ghash_ctmul64);
86#else
87	br_ssl_engine_set_ghash(cc, &br_ghash_ctmul);
88#endif
89}
90