1 /* Copyright (c) (2012,2014-2019,2021,2022) Apple Inc. All rights reserved.
2 *
3 * corecrypto is licensed under Apple Inc.’s Internal Use License Agreement (which
4 * is contained in the License.txt file distributed with corecrypto) and only to
5 * people who accept that license. IMPORTANT: Any license rights granted to you by
6 * Apple Inc. (if any) are limited to internal use within your organization only on
7 * devices and computers you own or control, for the sole purpose of verifying the
8 * security characteristics and correct functioning of the Apple Software. You may
9 * not, directly or indirectly, redistribute the Apple Software or any portions thereof.
10 *
11 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
12 *
13 * This file contains Original Code and/or Modifications of Original Code
14 * as defined in and that are subject to the Apple Public Source License
15 * Version 2.0 (the 'License'). You may not use this file except in
16 * compliance with the License. The rights granted to you under the License
17 * may not be used to create, or enable the creation or redistribution of,
18 * unlawful or unlicensed copies of an Apple operating system, or to
19 * circumvent, violate, or enable the circumvention or violation of, any
20 * terms of an Apple operating system software license agreement.
21 *
22 * Please obtain a copy of the License at
23 * http://www.opensource.apple.com/apsl/ and read it before using this file.
24 *
25 * The Original Code and all software distributed under the License are
26 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
27 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
28 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
29 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
30 * Please see the License for the specific language governing rights and
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33 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
34 */
35
36 #include <corecrypto/ccsha2.h>
37 #include "ccsha2_internal.h"
38 #include "cc_runtime_config.h"
39 #include "fipspost_trace.h"
40
41 const struct ccdigest_info *
ccsha256_di(void)42 ccsha256_di(void)
43 {
44 FIPSPOST_TRACE_EVENT;
45
46 #if CC_USE_ASM && CCSHA2_VNG_INTEL
47 #if defined(__x86_64__)
48 if (CC_HAS_AVX512_AND_IN_KERNEL()) {
49 return &ccsha256_vng_intel_SupplementalSSE3_di;
50 }
51
52 if (CC_HAS_AVX2()) {
53 return &ccsha256_vng_intel_AVX2_di;
54 }
55
56 if (CC_HAS_AVX1()) {
57 return &ccsha256_vng_intel_AVX1_di;
58 }
59 #endif
60
61 return &ccsha256_vng_intel_SupplementalSSE3_di;
62 #elif CC_USE_ASM && CCSHA2_VNG_ARM
63 return &ccsha256_vng_arm_di;
64 #elif CCSHA256_ARMV6M_ASM
65 return &ccsha256_v6m_di;
66 #else
67 return &ccsha256_ltc_di;
68 #endif
69 }
70