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1 | /** @file |
2 | This library is BaseCrypto SHA512 hash instance. | |
3 | It can be registered to BaseCrypto router, to serve as hash engine. | |
4 | ||
5 | Copyright (c) 2018, Intel Corporation. All rights reserved. <BR> | |
6 | This program and the accompanying materials | |
7 | are licensed and made available under the terms and conditions of the BSD License | |
8 | which accompanies this distribution. The full text of the license may be found at | |
9 | http://opensource.org/licenses/bsd-license.php | |
10 | ||
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
13 | ||
14 | **/ | |
15 | ||
16 | #include <PiPei.h> | |
17 | #include <Library/BaseLib.h> | |
18 | #include <Library/BaseMemoryLib.h> | |
19 | #include <Library/DebugLib.h> | |
20 | #include <Library/BaseCryptLib.h> | |
21 | #include <Library/MemoryAllocationLib.h> | |
22 | #include <Library/HashLib.h> | |
23 | ||
24 | /** | |
25 | The function set SHA512 to digest list. | |
26 | ||
27 | @param DigestList digest list | |
28 | @param Sha512Digest SHA512 digest | |
29 | **/ | |
30 | VOID | |
31 | Tpm2SetSha512ToDigestList ( | |
32 | IN TPML_DIGEST_VALUES *DigestList, | |
33 | IN UINT8 *Sha512Digest | |
34 | ) | |
35 | { | |
36 | DigestList->count = 1; | |
37 | DigestList->digests[0].hashAlg = TPM_ALG_SHA512; | |
38 | CopyMem ( | |
39 | DigestList->digests[0].digest.sha512, | |
40 | Sha512Digest, | |
41 | SHA512_DIGEST_SIZE | |
42 | ); | |
43 | } | |
44 | ||
45 | /** | |
46 | Start hash sequence. | |
47 | ||
48 | @param HashHandle Hash handle. | |
49 | ||
50 | @retval EFI_SUCCESS Hash sequence start and HandleHandle returned. | |
51 | @retval EFI_OUT_OF_RESOURCES No enough resource to start hash. | |
52 | **/ | |
53 | EFI_STATUS | |
54 | EFIAPI | |
55 | Sha512HashInit ( | |
56 | OUT HASH_HANDLE *HashHandle | |
57 | ) | |
58 | { | |
59 | VOID *Sha512Ctx; | |
60 | UINTN CtxSize; | |
61 | ||
62 | CtxSize = Sha512GetContextSize (); | |
63 | Sha512Ctx = AllocatePool (CtxSize); | |
64 | ASSERT (Sha512Ctx != NULL); | |
65 | ||
66 | Sha512Init (Sha512Ctx); | |
67 | ||
68 | *HashHandle = (HASH_HANDLE)Sha512Ctx; | |
69 | ||
70 | return EFI_SUCCESS; | |
71 | } | |
72 | ||
73 | /** | |
74 | Update hash sequence data. | |
75 | ||
76 | @param HashHandle Hash handle. | |
77 | @param DataToHash Data to be hashed. | |
78 | @param DataToHashLen Data size. | |
79 | ||
80 | @retval EFI_SUCCESS Hash sequence updated. | |
81 | **/ | |
82 | EFI_STATUS | |
83 | EFIAPI | |
84 | Sha512HashUpdate ( | |
85 | IN HASH_HANDLE HashHandle, | |
86 | IN VOID *DataToHash, | |
87 | IN UINTN DataToHashLen | |
88 | ) | |
89 | { | |
90 | VOID *Sha512Ctx; | |
91 | ||
92 | Sha512Ctx = (VOID *)HashHandle; | |
93 | Sha512Update (Sha512Ctx, DataToHash, DataToHashLen); | |
94 | ||
95 | return EFI_SUCCESS; | |
96 | } | |
97 | ||
98 | /** | |
99 | Complete hash sequence complete. | |
100 | ||
101 | @param HashHandle Hash handle. | |
102 | @param DigestList Digest list. | |
103 | ||
104 | @retval EFI_SUCCESS Hash sequence complete and DigestList is returned. | |
105 | **/ | |
106 | EFI_STATUS | |
107 | EFIAPI | |
108 | Sha512HashFinal ( | |
109 | IN HASH_HANDLE HashHandle, | |
110 | OUT TPML_DIGEST_VALUES *DigestList | |
111 | ) | |
112 | { | |
113 | UINT8 Digest[SHA512_DIGEST_SIZE]; | |
114 | VOID *Sha512Ctx; | |
115 | ||
116 | Sha512Ctx = (VOID *)HashHandle; | |
117 | Sha512Final (Sha512Ctx, Digest); | |
118 | ||
119 | FreePool (Sha512Ctx); | |
120 | ||
121 | Tpm2SetSha512ToDigestList (DigestList, Digest); | |
122 | ||
123 | return EFI_SUCCESS; | |
124 | } | |
125 | ||
126 | HASH_INTERFACE mSha512InternalHashInstance = { | |
127 | HASH_ALGORITHM_SHA512_GUID, | |
128 | Sha512HashInit, | |
129 | Sha512HashUpdate, | |
130 | Sha512HashFinal, | |
131 | }; | |
132 | ||
133 | /** | |
134 | The function register SHA512 instance. | |
135 | ||
136 | @retval EFI_SUCCESS SHA512 instance is registered, or system dose not surpport registr SHA512 instance | |
137 | **/ | |
138 | EFI_STATUS | |
139 | EFIAPI | |
140 | HashInstanceLibSha512Constructor ( | |
141 | VOID | |
142 | ) | |
143 | { | |
144 | EFI_STATUS Status; | |
145 | ||
146 | Status = RegisterHashInterfaceLib (&mSha512InternalHashInstance); | |
147 | if ((Status == EFI_SUCCESS) || (Status == EFI_UNSUPPORTED)) { | |
148 | // | |
149 | // Unsupported means platform policy does not need this instance enabled. | |
150 | // | |
151 | return EFI_SUCCESS; | |
152 | } | |
153 | return Status; | |
154 | } |