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1 | /** @file\r |
2 | Ihis library is BaseCrypto SHA1 hash instance.\r | |
3 | It can be registered to BaseCrypto router, to serve as hash engine.\r | |
4 | \r | |
5 | Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>\r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include <PiPei.h>\r | |
17 | #include <Library/BaseLib.h>\r | |
18 | #include <Library/BaseMemoryLib.h>\r | |
19 | #include <Library/Tpm2CommandLib.h>\r | |
20 | #include <Library/DebugLib.h>\r | |
21 | #include <Library/BaseCryptLib.h>\r | |
22 | #include <Library/MemoryAllocationLib.h>\r | |
23 | #include <Library/HashLib.h>\r | |
24 | \r | |
25 | /**\r | |
26 | The function set SHA1 to digest list.\r | |
27 | \r | |
28 | @param DigestList digest list\r | |
29 | @param Sha1Digest SHA1 digest\r | |
30 | **/\r | |
31 | VOID\r | |
32 | Tpm2SetSha1ToDigestList (\r | |
33 | IN TPML_DIGEST_VALUES *DigestList,\r | |
34 | IN UINT8 *Sha1Digest\r | |
35 | )\r | |
36 | {\r | |
37 | DigestList->count = 1;\r | |
38 | DigestList->digests[0].hashAlg = TPM_ALG_SHA1;\r | |
39 | CopyMem (\r | |
40 | DigestList->digests[0].digest.sha1,\r | |
41 | Sha1Digest,\r | |
42 | SHA1_DIGEST_SIZE\r | |
43 | );\r | |
44 | }\r | |
45 | \r | |
46 | /**\r | |
47 | Start hash sequence.\r | |
48 | \r | |
49 | @param HashHandle Hash handle.\r | |
50 | \r | |
51 | @retval EFI_SUCCESS Hash sequence start and HandleHandle returned.\r | |
52 | @retval EFI_OUT_OF_RESOURCES No enough resource to start hash.\r | |
53 | **/\r | |
54 | EFI_STATUS\r | |
55 | EFIAPI\r | |
56 | Sha1HashInit (\r | |
57 | OUT HASH_HANDLE *HashHandle\r | |
58 | )\r | |
59 | {\r | |
60 | VOID *Sha1Ctx;\r | |
61 | UINTN CtxSize;\r | |
62 | \r | |
63 | CtxSize = Sha1GetContextSize ();\r | |
64 | Sha1Ctx = AllocatePool (CtxSize);\r | |
65 | ASSERT (Sha1Ctx != NULL);\r | |
66 | \r | |
67 | Sha1Init (Sha1Ctx);\r | |
68 | \r | |
69 | *HashHandle = (HASH_HANDLE)Sha1Ctx;\r | |
70 | \r | |
71 | return EFI_SUCCESS;\r | |
72 | }\r | |
73 | \r | |
74 | /**\r | |
75 | Update hash sequence data.\r | |
76 | \r | |
77 | @param HashHandle Hash handle.\r | |
78 | @param DataToHash Data to be hashed.\r | |
79 | @param DataToHashLen Data size.\r | |
80 | \r | |
81 | @retval EFI_SUCCESS Hash sequence updated.\r | |
82 | **/\r | |
83 | EFI_STATUS\r | |
84 | EFIAPI\r | |
85 | Sha1HashUpdate (\r | |
86 | IN HASH_HANDLE HashHandle,\r | |
87 | IN VOID *DataToHash,\r | |
88 | IN UINTN DataToHashLen\r | |
89 | )\r | |
90 | {\r | |
91 | VOID *Sha1Ctx;\r | |
92 | \r | |
93 | Sha1Ctx = (VOID *)HashHandle;\r | |
94 | Sha1Update (Sha1Ctx, DataToHash, DataToHashLen);\r | |
95 | \r | |
96 | return EFI_SUCCESS;\r | |
97 | }\r | |
98 | \r | |
99 | /**\r | |
100 | Complete hash sequence complete.\r | |
101 | \r | |
102 | @param HashHandle Hash handle.\r | |
103 | @param DigestList Digest list.\r | |
104 | \r | |
105 | @retval EFI_SUCCESS Hash sequence complete and DigestList is returned.\r | |
106 | **/\r | |
107 | EFI_STATUS\r | |
108 | EFIAPI\r | |
109 | Sha1HashFinal (\r | |
110 | IN HASH_HANDLE HashHandle,\r | |
111 | OUT TPML_DIGEST_VALUES *DigestList\r | |
112 | )\r | |
113 | {\r | |
114 | UINT8 Digest[SHA1_DIGEST_SIZE];\r | |
115 | VOID *Sha1Ctx;\r | |
116 | \r | |
117 | Sha1Ctx = (VOID *)HashHandle;\r | |
118 | Sha1Final (Sha1Ctx, Digest);\r | |
119 | \r | |
120 | FreePool (Sha1Ctx);\r | |
121 | \r | |
122 | Tpm2SetSha1ToDigestList (DigestList, Digest);\r | |
123 | \r | |
124 | return EFI_SUCCESS;\r | |
125 | }\r | |
126 | \r | |
127 | HASH_INTERFACE mSha1InternalHashInstance = {\r | |
128 | HASH_ALGORITHM_SHA1_GUID,\r | |
129 | Sha1HashInit,\r | |
130 | Sha1HashUpdate,\r | |
131 | Sha1HashFinal,\r | |
132 | };\r | |
133 | \r | |
134 | /**\r | |
135 | The function register SHA1 instance.\r | |
136 | \r | |
137 | @retval EFI_SUCCESS SHA1 instance is registered, or system dose not surpport registr SHA1 instance\r | |
138 | **/\r | |
139 | EFI_STATUS\r | |
140 | EFIAPI\r | |
141 | HashInstanceLibSha1Constructor (\r | |
142 | VOID\r | |
143 | )\r | |
144 | {\r | |
145 | EFI_STATUS Status;\r | |
146 | \r | |
147 | Status = RegisterHashInterfaceLib (&mSha1InternalHashInstance);\r | |
148 | if ((Status == EFI_SUCCESS) || (Status == EFI_UNSUPPORTED)) {\r | |
149 | //\r | |
150 | // Unsupported means platform policy does not need this instance enabled.\r | |
151 | //\r | |
152 | return EFI_SUCCESS;\r | |
153 | }\r | |
154 | return Status;\r | |
155 | } |