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c1d93242 JY |
1 | /** @file\r |
2 | Implement TPM2 help.\r | |
3 | \r | |
58dbfc3c | 4 | Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved. <BR>\r |
c1d93242 JY |
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 <IndustryStandard/UefiTcgPlatform.h>\r | |
16 | #include <Library/Tpm2CommandLib.h>\r | |
17 | #include <Library/Tpm2DeviceLib.h>\r | |
18 | #include <Library/BaseMemoryLib.h>\r | |
19 | #include <Library/BaseLib.h>\r | |
20 | #include <Library/DebugLib.h>\r | |
21 | \r | |
22 | typedef struct {\r | |
23 | TPMI_ALG_HASH HashAlgo;\r | |
24 | UINT16 HashSize;\r | |
25 | } INTERNAL_HASH_INFO;\r | |
26 | \r | |
27 | STATIC INTERNAL_HASH_INFO mHashInfo[] = {\r | |
28 | {TPM_ALG_SHA1, SHA1_DIGEST_SIZE},\r | |
29 | {TPM_ALG_SHA256, SHA256_DIGEST_SIZE},\r | |
30 | {TPM_ALG_SM3_256, SM3_256_DIGEST_SIZE},\r | |
31 | {TPM_ALG_SHA384, SHA384_DIGEST_SIZE},\r | |
32 | {TPM_ALG_SHA512, SHA512_DIGEST_SIZE},\r | |
33 | };\r | |
34 | \r | |
35 | /**\r | |
36 | Return size of digest.\r | |
37 | \r | |
38 | @param[in] HashAlgo Hash algorithm\r | |
39 | \r | |
40 | @return size of digest\r | |
41 | **/\r | |
42 | UINT16\r | |
43 | EFIAPI\r | |
44 | GetHashSizeFromAlgo (\r | |
45 | IN TPMI_ALG_HASH HashAlgo\r | |
46 | )\r | |
47 | {\r | |
48 | UINTN Index;\r | |
49 | \r | |
50 | for (Index = 0; Index < sizeof(mHashInfo)/sizeof(mHashInfo[0]); Index++) {\r | |
51 | if (mHashInfo[Index].HashAlgo == HashAlgo) {\r | |
52 | return mHashInfo[Index].HashSize;\r | |
53 | }\r | |
54 | }\r | |
55 | return 0;\r | |
56 | }\r | |
57 | \r | |
58 | /**\r | |
59 | Copy AuthSessionIn to TPM2 command buffer.\r | |
60 | \r | |
61 | @param [in] AuthSessionIn Input AuthSession data\r | |
62 | @param [out] AuthSessionOut Output AuthSession data in TPM2 command buffer\r | |
63 | \r | |
64 | @return AuthSession size\r | |
65 | **/\r | |
66 | UINT32\r | |
67 | EFIAPI\r | |
68 | CopyAuthSessionCommand (\r | |
69 | IN TPMS_AUTH_COMMAND *AuthSessionIn, OPTIONAL\r | |
70 | OUT UINT8 *AuthSessionOut\r | |
71 | )\r | |
72 | {\r | |
73 | UINT8 *Buffer;\r | |
74 | \r | |
75 | Buffer = (UINT8 *)AuthSessionOut;\r | |
76 | \r | |
77 | //\r | |
78 | // Add in Auth session\r | |
79 | //\r | |
80 | if (AuthSessionIn != NULL) {\r | |
81 | // sessionHandle\r | |
82 | WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32(AuthSessionIn->sessionHandle));\r | |
83 | Buffer += sizeof(UINT32);\r | |
84 | \r | |
85 | // nonce\r | |
86 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (AuthSessionIn->nonce.size));\r | |
87 | Buffer += sizeof(UINT16);\r | |
88 | \r | |
89 | CopyMem (Buffer, AuthSessionIn->nonce.buffer, AuthSessionIn->nonce.size);\r | |
90 | Buffer += AuthSessionIn->nonce.size;\r | |
91 | \r | |
92 | // sessionAttributes\r | |
93 | *(UINT8 *)Buffer = *(UINT8 *)&AuthSessionIn->sessionAttributes;\r | |
58dbfc3c | 94 | Buffer++;\r |
c1d93242 JY |
95 | \r |
96 | // hmac\r | |
97 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16 (AuthSessionIn->hmac.size));\r | |
98 | Buffer += sizeof(UINT16);\r | |
99 | \r | |
100 | CopyMem (Buffer, AuthSessionIn->hmac.buffer, AuthSessionIn->hmac.size);\r | |
101 | Buffer += AuthSessionIn->hmac.size;\r | |
102 | } else {\r | |
103 | // sessionHandle\r | |
104 | WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32(TPM_RS_PW));\r | |
105 | Buffer += sizeof(UINT32);\r | |
106 | \r | |
107 | // nonce = nullNonce\r | |
108 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(0));\r | |
109 | Buffer += sizeof(UINT16);\r | |
110 | \r | |
111 | // sessionAttributes = 0\r | |
112 | *(UINT8 *)Buffer = 0x00;\r | |
58dbfc3c | 113 | Buffer++;\r |
c1d93242 JY |
114 | \r |
115 | // hmac = nullAuth\r | |
116 | WriteUnaligned16 ((UINT16 *)Buffer, SwapBytes16(0));\r | |
117 | Buffer += sizeof(UINT16);\r | |
118 | }\r | |
119 | \r | |
120 | return (UINT32)(UINTN)(Buffer - (UINT8 *)AuthSessionOut);\r | |
121 | }\r | |
122 | \r | |
123 | /**\r | |
124 | Copy AuthSessionIn from TPM2 response buffer.\r | |
125 | \r | |
126 | @param [in] AuthSessionIn Input AuthSession data in TPM2 response buffer\r | |
127 | @param [out] AuthSessionOut Output AuthSession data\r | |
128 | \r | |
129 | @return AuthSession size\r | |
130 | **/\r | |
131 | UINT32\r | |
132 | EFIAPI\r | |
133 | CopyAuthSessionResponse (\r | |
134 | IN UINT8 *AuthSessionIn,\r | |
135 | OUT TPMS_AUTH_RESPONSE *AuthSessionOut OPTIONAL\r | |
136 | )\r | |
137 | {\r | |
138 | UINT8 *Buffer;\r | |
139 | TPMS_AUTH_RESPONSE LocalAuthSessionOut;\r | |
140 | \r | |
141 | if (AuthSessionOut == NULL) {\r | |
142 | AuthSessionOut = &LocalAuthSessionOut;\r | |
143 | }\r | |
144 | \r | |
145 | Buffer = (UINT8 *)AuthSessionIn;\r | |
146 | \r | |
147 | // nonce\r | |
148 | AuthSessionOut->nonce.size = SwapBytes16 (ReadUnaligned16 ((UINT16 *)Buffer));\r | |
149 | Buffer += sizeof(UINT16);\r | |
150 | \r | |
151 | CopyMem (AuthSessionOut->nonce.buffer, Buffer, AuthSessionOut->nonce.size);\r | |
152 | Buffer += AuthSessionOut->nonce.size;\r | |
153 | \r | |
154 | // sessionAttributes\r | |
155 | *(UINT8 *)&AuthSessionOut->sessionAttributes = *(UINT8 *)Buffer;\r | |
58dbfc3c | 156 | Buffer++;\r |
c1d93242 JY |
157 | \r |
158 | // hmac\r | |
159 | AuthSessionOut->hmac.size = SwapBytes16 (ReadUnaligned16 ((UINT16 *)Buffer));\r | |
160 | Buffer += sizeof(UINT16);\r | |
161 | \r | |
162 | CopyMem (AuthSessionOut->hmac.buffer, Buffer, AuthSessionOut->hmac.size);\r | |
163 | Buffer += AuthSessionOut->hmac.size;\r | |
164 | \r | |
165 | return (UINT32)(UINTN)(Buffer - (UINT8 *)AuthSessionIn);\r | |
166 | }\r |