]>
Commit | Line | Data |
---|---|---|
97f98500 HT |
1 | /** @file\r |
2 | SHA-1 Digest Wrapper Implementation over OpenSSL.\r | |
3 | \r | |
4 | Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include <Library/BaseLib.h>\r | |
16 | #include <Library/DebugLib.h>\r | |
17 | \r | |
18 | #include <Library/BaseCryptLib.h>\r | |
19 | #include <openssl/sha.h>\r | |
20 | \r | |
21 | \r | |
22 | /**\r | |
23 | Retrieves the size, in bytes, of the context buffer required for SHA-1 hash operations.\r | |
24 | \r | |
25 | @return The size, in bytes, of the context buffer required for SHA-1 hash operations.\r | |
26 | \r | |
27 | **/\r | |
28 | UINTN\r | |
29 | EFIAPI\r | |
30 | Sha1GetContextSize (\r | |
31 | VOID\r | |
32 | )\r | |
33 | {\r | |
34 | //\r | |
35 | // Retrieves OpenSSL SHA Context Size\r | |
36 | //\r | |
37 | return (UINTN)(sizeof (SHA_CTX));\r | |
38 | }\r | |
39 | \r | |
40 | \r | |
41 | /**\r | |
42 | Initializes user-supplied memory pointed by Sha1Context as the SHA-1 hash context for\r | |
43 | subsequent use.\r | |
44 | \r | |
45 | If Sha1Context is NULL, then ASSERT().\r | |
46 | \r | |
47 | @param[in, out] Sha1Context Pointer to the SHA-1 Context being initialized.\r | |
48 | \r | |
49 | @retval TRUE SHA-1 initialization succeeded.\r | |
50 | @retval FALSE SHA-1 initialization failed.\r | |
51 | \r | |
52 | **/\r | |
53 | BOOLEAN\r | |
54 | EFIAPI\r | |
55 | Sha1Init (\r | |
56 | IN OUT VOID *Sha1Context\r | |
57 | )\r | |
58 | {\r | |
59 | //\r | |
60 | // ASSERT if Sha1Context is NULL\r | |
61 | //\r | |
62 | ASSERT (Sha1Context != NULL);\r | |
63 | \r | |
64 | //\r | |
65 | // OpenSSL SHA-1 Context Initialization\r | |
66 | //\r | |
67 | return (BOOLEAN) (SHA1_Init ((SHA_CTX *)Sha1Context));\r | |
68 | }\r | |
69 | \r | |
70 | \r | |
71 | /**\r | |
72 | Performs SHA-1 digest on a data buffer of the specified length. This function can\r | |
73 | be called multiple times to compute the digest of long or discontinuous data streams.\r | |
74 | \r | |
75 | If Sha1Context is NULL, then ASSERT().\r | |
76 | \r | |
77 | @param[in, out] Sha1Context Pointer to the SHA-1 context.\r | |
78 | @param[in] Data Pointer to the buffer containing the data to be hashed.\r | |
79 | @param[in] DataLength Length of Data buffer in bytes.\r | |
80 | \r | |
81 | @retval TRUE SHA-1 data digest succeeded.\r | |
82 | @retval FALSE Invalid SHA-1 context. After Sha1Final function has been called, the\r | |
83 | SHA-1 context cannot be reused.\r | |
84 | \r | |
85 | **/\r | |
86 | BOOLEAN\r | |
87 | EFIAPI\r | |
88 | Sha1Update (\r | |
89 | IN OUT VOID *Sha1Context,\r | |
90 | IN CONST VOID *Data,\r | |
91 | IN UINTN DataLength\r | |
92 | )\r | |
93 | {\r | |
94 | //\r | |
95 | // ASSERT if Sha1Context is NULL\r | |
96 | //\r | |
97 | ASSERT (Sha1Context != NULL);\r | |
98 | \r | |
99 | //\r | |
100 | // ASSERT if invalid parameters, in case that only DataLength was checked in OpenSSL\r | |
101 | //\r | |
102 | if (Data == NULL) {\r | |
103 | ASSERT (DataLength == 0);\r | |
104 | }\r | |
105 | \r | |
106 | //\r | |
107 | // OpenSSL SHA-1 Hash Update\r | |
108 | //\r | |
109 | return (BOOLEAN) (SHA1_Update ((SHA_CTX *)Sha1Context, Data, DataLength));\r | |
110 | }\r | |
111 | \r | |
112 | \r | |
113 | /**\r | |
114 | Completes SHA-1 hash computation and retrieves the digest value into the specified\r | |
115 | memory. After this function has been called, the SHA-1 context cannot be used again.\r | |
116 | \r | |
117 | If Sha1Context is NULL, then ASSERT().\r | |
118 | If HashValue is NULL, then ASSERT().\r | |
119 | \r | |
120 | @param[in, out] Sha1Context Pointer to the SHA-1 context\r | |
121 | @param[out] HashValue Pointer to a buffer that receives the SHA-1 digest\r | |
122 | value (20 bytes).\r | |
123 | \r | |
124 | @retval TRUE SHA-1 digest computation succeeded.\r | |
125 | @retval FALSE SHA-1 digest computation failed.\r | |
126 | \r | |
127 | **/\r | |
128 | BOOLEAN\r | |
129 | EFIAPI\r | |
130 | Sha1Final (\r | |
131 | IN OUT VOID *Sha1Context,\r | |
132 | OUT UINT8 *HashValue\r | |
133 | )\r | |
134 | {\r | |
135 | //\r | |
136 | // ASSERT if Sha1Context is NULL or HashValue is NULL\r | |
137 | //\r | |
138 | ASSERT (Sha1Context != NULL);\r | |
139 | ASSERT (HashValue != NULL);\r | |
140 | \r | |
141 | //\r | |
142 | // OpenSSL SHA-1 Hash Finalization\r | |
143 | //\r | |
144 | return (BOOLEAN) (SHA1_Final (HashValue, (SHA_CTX *)Sha1Context));\r | |
145 | }\r |