2 Ihis library is BaseCrypto router. It will redirect hash request to each individual
3 hash handler registerd, such as SHA1, SHA256.
4 Platform can use PcdTpm2HashMask to mask some hash engines.
6 Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 #include <Library/BaseLib.h>
19 #include <Library/BaseMemoryLib.h>
20 #include <Library/Tpm2CommandLib.h>
21 #include <Library/DebugLib.h>
22 #include <Library/MemoryAllocationLib.h>
23 #include <Library/PcdLib.h>
24 #include <Library/HashLib.h>
26 #include "HashLibBaseCryptoRouterCommon.h"
28 HASH_INTERFACE mHashInterface
[HASH_COUNT
] = {0};
29 UINTN mHashInterfaceCount
= 0;
34 @param HashHandle Hash handle.
36 @retval EFI_SUCCESS Hash sequence start and HandleHandle returned.
37 @retval EFI_OUT_OF_RESOURCES No enough resource to start hash.
42 OUT HASH_HANDLE
*HashHandle
48 if (mHashInterfaceCount
== 0) {
49 return EFI_UNSUPPORTED
;
52 HashCtx
= AllocatePool (sizeof(*HashCtx
) * mHashInterfaceCount
);
53 ASSERT (HashCtx
!= NULL
);
55 for (Index
= 0; Index
< mHashInterfaceCount
; Index
++) {
56 mHashInterface
[Index
].HashInit (&HashCtx
[Index
]);
59 *HashHandle
= (HASH_HANDLE
)HashCtx
;
65 Update hash sequence data.
67 @param HashHandle Hash handle.
68 @param DataToHash Data to be hashed.
69 @param DataToHashLen Data size.
71 @retval EFI_SUCCESS Hash sequence updated.
76 IN HASH_HANDLE HashHandle
,
78 IN UINTN DataToHashLen
84 if (mHashInterfaceCount
== 0) {
85 return EFI_UNSUPPORTED
;
88 HashCtx
= (HASH_HANDLE
*)HashHandle
;
90 for (Index
= 0; Index
< mHashInterfaceCount
; Index
++) {
91 mHashInterface
[Index
].HashUpdate (HashCtx
[Index
], DataToHash
, DataToHashLen
);
98 Hash sequence complete and extend to PCR.
100 @param HashHandle Hash handle.
101 @param PcrIndex PCR to be extended.
102 @param DataToHash Data to be hashed.
103 @param DataToHashLen Data size.
104 @param DigestList Digest list.
106 @retval EFI_SUCCESS Hash sequence complete and DigestList is returned.
110 HashCompleteAndExtend (
111 IN HASH_HANDLE HashHandle
,
112 IN TPMI_DH_PCR PcrIndex
,
114 IN UINTN DataToHashLen
,
115 OUT TPML_DIGEST_VALUES
*DigestList
118 TPML_DIGEST_VALUES Digest
;
119 HASH_HANDLE
*HashCtx
;
123 if (mHashInterfaceCount
== 0) {
124 return EFI_UNSUPPORTED
;
127 HashCtx
= (HASH_HANDLE
*)HashHandle
;
128 ZeroMem (DigestList
, sizeof(*DigestList
));
130 for (Index
= 0; Index
< mHashInterfaceCount
; Index
++) {
131 mHashInterface
[Index
].HashUpdate (HashCtx
[Index
], DataToHash
, DataToHashLen
);
132 mHashInterface
[Index
].HashFinal (HashCtx
[Index
], &Digest
);
133 Tpm2SetHashToDigestList (DigestList
, &Digest
);
138 Status
= Tpm2PcrExtend (
146 Hash data and extend to PCR.
148 @param PcrIndex PCR to be extended.
149 @param DataToHash Data to be hashed.
150 @param DataToHashLen Data size.
151 @param DigestList Digest list.
153 @retval EFI_SUCCESS Hash data and DigestList is returned.
158 IN TPMI_DH_PCR PcrIndex
,
160 IN UINTN DataToHashLen
,
161 OUT TPML_DIGEST_VALUES
*DigestList
164 HASH_HANDLE HashHandle
;
167 if (mHashInterfaceCount
== 0) {
168 return EFI_UNSUPPORTED
;
171 HashStart (&HashHandle
);
172 HashUpdate (HashHandle
, DataToHash
, DataToHashLen
);
173 Status
= HashCompleteAndExtend (HashHandle
, PcrIndex
, NULL
, 0, DigestList
);
179 This service register Hash.
181 @param HashInterface Hash interface
183 @retval EFI_SUCCESS This hash interface is registered successfully.
184 @retval EFI_UNSUPPORTED System does not support register this interface.
185 @retval EFI_ALREADY_STARTED System already register this interface.
189 RegisterHashInterfaceLib (
190 IN HASH_INTERFACE
*HashInterface
199 HashMask
= Tpm2GetHashMaskFromAlgo (&HashInterface
->HashGuid
);
200 if ((HashMask
& PcdGet32 (PcdTpm2HashMask
)) == 0) {
201 return EFI_UNSUPPORTED
;
204 if (mHashInterfaceCount
>= sizeof(mHashInterface
)/sizeof(mHashInterface
[0])) {
205 return EFI_OUT_OF_RESOURCES
;
211 for (Index
= 0; Index
< mHashInterfaceCount
; Index
++) {
212 if (CompareGuid (&mHashInterface
[Index
].HashGuid
, &HashInterface
->HashGuid
)) {
213 return EFI_ALREADY_STARTED
;
217 CopyMem (&mHashInterface
[mHashInterfaceCount
], HashInterface
, sizeof(*HashInterface
));
218 mHashInterfaceCount
++;