--- /dev/null
+/** @file\r
+ Ihis library is BaseCrypto router. It will redirect hash request to each individual\r
+ hash handler registerd, such as SHA1, SHA256.\r
+ Platform can use PcdTpm2HashMask to mask some hash engines.\r
+\r
+Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>\r
+This program and the accompanying materials\r
+are licensed and made available under the terms and conditions of the BSD License\r
+which accompanies this distribution. The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include <PiPei.h>\r
+#include <Library/BaseLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/Tpm2CommandLib.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/MemoryAllocationLib.h>\r
+#include <Library/PcdLib.h>\r
+#include <Library/HashLib.h>\r
+\r
+#include "HashLibBaseCryptoRouterCommon.h"\r
+\r
+HASH_INTERFACE mHashInterface[HASH_COUNT] = {0};\r
+UINTN mHashInterfaceCount = 0;\r
+\r
+/**\r
+ Start hash sequence.\r
+\r
+ @param HashHandle Hash handle.\r
+\r
+ @retval EFI_SUCCESS Hash sequence start and HandleHandle returned.\r
+ @retval EFI_OUT_OF_RESOURCES No enough resource to start hash.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+HashStart (\r
+ OUT HASH_HANDLE *HashHandle\r
+ )\r
+{\r
+ HASH_HANDLE *HashCtx;\r
+ UINTN Index;\r
+\r
+ if (mHashInterfaceCount == 0) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ HashCtx = AllocatePool (sizeof(*HashCtx) * mHashInterfaceCount);\r
+ ASSERT (HashCtx != NULL);\r
+\r
+ for (Index = 0; Index < mHashInterfaceCount; Index++) {\r
+ mHashInterface[Index].HashInit (&HashCtx[Index]);\r
+ }\r
+\r
+ *HashHandle = (HASH_HANDLE)HashCtx;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Update hash sequence data.\r
+\r
+ @param HashHandle Hash handle.\r
+ @param DataToHash Data to be hashed.\r
+ @param DataToHashLen Data size.\r
+\r
+ @retval EFI_SUCCESS Hash sequence updated.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+HashUpdate (\r
+ IN HASH_HANDLE HashHandle,\r
+ IN VOID *DataToHash,\r
+ IN UINTN DataToHashLen\r
+ )\r
+{\r
+ HASH_HANDLE *HashCtx;\r
+ UINTN Index;\r
+\r
+ if (mHashInterfaceCount == 0) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ HashCtx = (HASH_HANDLE *)HashHandle;\r
+\r
+ for (Index = 0; Index < mHashInterfaceCount; Index++) {\r
+ mHashInterface[Index].HashUpdate (HashCtx[Index], DataToHash, DataToHashLen);\r
+ }\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Hash sequence complete and extend to PCR.\r
+\r
+ @param HashHandle Hash handle.\r
+ @param PcrIndex PCR to be extended.\r
+ @param DataToHash Data to be hashed.\r
+ @param DataToHashLen Data size.\r
+ @param DigestList Digest list.\r
+\r
+ @retval EFI_SUCCESS Hash sequence complete and DigestList is returned.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+HashCompleteAndExtend (\r
+ IN HASH_HANDLE HashHandle,\r
+ IN TPMI_DH_PCR PcrIndex,\r
+ IN VOID *DataToHash,\r
+ IN UINTN DataToHashLen,\r
+ OUT TPML_DIGEST_VALUES *DigestList\r
+ )\r
+{\r
+ TPML_DIGEST_VALUES Digest;\r
+ HASH_HANDLE *HashCtx;\r
+ UINTN Index;\r
+ EFI_STATUS Status;\r
+\r
+ if (mHashInterfaceCount == 0) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ HashCtx = (HASH_HANDLE *)HashHandle;\r
+ ZeroMem (DigestList, sizeof(*DigestList));\r
+\r
+ for (Index = 0; Index < mHashInterfaceCount; Index++) {\r
+ mHashInterface[Index].HashUpdate (HashCtx[Index], DataToHash, DataToHashLen);\r
+ mHashInterface[Index].HashFinal (HashCtx[Index], &Digest);\r
+ Tpm2SetHashToDigestList (DigestList, &Digest);\r
+ }\r
+\r
+ FreePool (HashCtx);\r
+\r
+ Status = Tpm2PcrExtend (\r
+ PcrIndex,\r
+ DigestList\r
+ );\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Hash data and extend to PCR.\r
+\r
+ @param PcrIndex PCR to be extended.\r
+ @param DataToHash Data to be hashed.\r
+ @param DataToHashLen Data size.\r
+ @param DigestList Digest list.\r
+\r
+ @retval EFI_SUCCESS Hash data and DigestList is returned.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+HashAndExtend (\r
+ IN TPMI_DH_PCR PcrIndex,\r
+ IN VOID *DataToHash,\r
+ IN UINTN DataToHashLen,\r
+ OUT TPML_DIGEST_VALUES *DigestList\r
+ )\r
+{\r
+ HASH_HANDLE HashHandle;\r
+ EFI_STATUS Status;\r
+\r
+ if (mHashInterfaceCount == 0) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ HashStart (&HashHandle);\r
+ HashUpdate (HashHandle, DataToHash, DataToHashLen);\r
+ Status = HashCompleteAndExtend (HashHandle, PcrIndex, NULL, 0, DigestList);\r
+\r
+ return Status;\r
+}\r
+\r
+/**\r
+ This service register Hash.\r
+\r
+ @param HashInterface Hash interface\r
+\r
+ @retval EFI_SUCCESS This hash interface is registered successfully.\r
+ @retval EFI_UNSUPPORTED System does not support register this interface.\r
+ @retval EFI_ALREADY_STARTED System already register this interface.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+RegisterHashInterfaceLib (\r
+ IN HASH_INTERFACE *HashInterface\r
+ )\r
+{\r
+ UINTN Index;\r
+ UINT32 HashMask;\r
+\r
+ //\r
+ // Check allow\r
+ //\r
+ HashMask = Tpm2GetHashMaskFromAlgo (&HashInterface->HashGuid);\r
+ if ((HashMask & PcdGet32 (PcdTpm2HashMask)) == 0) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ if (mHashInterfaceCount >= sizeof(mHashInterface)/sizeof(mHashInterface[0])) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ //\r
+ // Check duplication\r
+ //\r
+ for (Index = 0; Index < mHashInterfaceCount; Index++) {\r
+ if (CompareGuid (&mHashInterface[Index].HashGuid, &HashInterface->HashGuid)) {\r
+ return EFI_ALREADY_STARTED;\r
+ }\r
+ }\r
+\r
+ CopyMem (&mHashInterface[mHashInterfaceCount], HashInterface, sizeof(*HashInterface));\r
+ mHashInterfaceCount ++;\r
+ \r
+ return EFI_SUCCESS;\r
+}
\ No newline at end of file
projects / mirror_edk2.git / blobdiff