New AES and GHASH implementations using POWER8 crypto opcodes.
[BearSSL] / src / ssl / ssl_engine_default_aesgcm.c
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 */
28 void
29 br_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 }