diff options
Diffstat (limited to 'SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c')
| -rw-r--r-- | SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c b/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c new file mode 100644 index 0000000000..1e7eb2d77e --- /dev/null +++ b/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c @@ -0,0 +1,288 @@ +/** @file
+ Ihis library is BaseCrypto router. It will redirect hash request to each individual
+ hash handler registerd, such as SHA1, SHA256.
+ Platform can use PcdTpm2HashMask to mask some hash engines.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <PiPei.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/Tpm2CommandLib.h>
+#include <Library/DebugLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PcdLib.h>
+#include <Library/HobLib.h>
+#include <Library/HashLib.h>
+
+#include "HashLibBaseCryptoRouterCommon.h"
+
+#define HASH_LIB_PEI_ROUTER_GUID \
+ { 0x84681c08, 0x6873, 0x46f3, { 0x8b, 0xb7, 0xab, 0x66, 0x18, 0x95, 0xa1, 0xb3 } }
+
+EFI_GUID mHashLibPeiRouterGuid = HASH_LIB_PEI_ROUTER_GUID;
+
+typedef struct {
+ UINTN HashInterfaceCount;
+ HASH_INTERFACE HashInterface[HASH_COUNT];
+} HASH_INTERFACE_HOB;
+
+/**
+ This function get hash interface.
+
+ @retval hash interface.
+**/
+HASH_INTERFACE_HOB *
+InternalGetHashInterface (
+ VOID
+ )
+{
+ EFI_HOB_GUID_TYPE *Hob;
+
+ Hob = GetFirstGuidHob (&mHashLibPeiRouterGuid);
+ if (Hob == NULL) {
+ return NULL;
+ }
+ return (HASH_INTERFACE_HOB *)(Hob + 1);
+}
+
+/**
+ Start hash sequence.
+
+ @param HashHandle Hash handle.
+
+ @retval EFI_SUCCESS Hash sequence start and HandleHandle returned.
+ @retval EFI_OUT_OF_RESOURCES No enough resource to start hash.
+**/
+EFI_STATUS
+EFIAPI
+HashStart (
+ OUT HASH_HANDLE *HashHandle
+ )
+{
+ HASH_INTERFACE_HOB *HashInterfaceHob;
+ HASH_HANDLE *HashCtx;
+ UINTN Index;
+
+ HashInterfaceHob = InternalGetHashInterface ();
+ if (HashInterfaceHob == NULL) {
+ return EFI_UNSUPPORTED;
+ }
+
+ if (HashInterfaceHob->HashInterfaceCount == 0) {
+ return EFI_UNSUPPORTED;
+ }
+
+ HashCtx = AllocatePool (sizeof(*HashCtx) * HashInterfaceHob->HashInterfaceCount);
+ ASSERT (HashCtx != NULL);
+
+ for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {
+ HashInterfaceHob->HashInterface[Index].HashInit (&HashCtx[Index]);
+ }
+
+ *HashHandle = (HASH_HANDLE)HashCtx;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Update hash sequence data.
+
+ @param HashHandle Hash handle.
+ @param DataToHash Data to be hashed.
+ @param DataToHashLen Data size.
+
+ @retval EFI_SUCCESS Hash sequence updated.
+**/
+EFI_STATUS
+EFIAPI
+HashUpdate (
+ IN HASH_HANDLE HashHandle,
+ IN VOID *DataToHash,
+ IN UINTN DataToHashLen
+ )
+{
+ HASH_INTERFACE_HOB *HashInterfaceHob;
+ HASH_HANDLE *HashCtx;
+ UINTN Index;
+
+ HashInterfaceHob = InternalGetHashInterface ();
+ if (HashInterfaceHob == NULL) {
+ return EFI_UNSUPPORTED;
+ }
+
+ if (HashInterfaceHob->HashInterfaceCount == 0) {
+ return EFI_UNSUPPORTED;
+ }
+
+ HashCtx = (HASH_HANDLE *)HashHandle;
+
+ for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {
+ HashInterfaceHob->HashInterface[Index].HashUpdate (HashCtx[Index], DataToHash, DataToHashLen);
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Hash sequence complete and extend to PCR.
+
+ @param HashHandle Hash handle.
+ @param PcrIndex PCR to be extended.
+ @param DataToHash Data to be hashed.
+ @param DataToHashLen Data size.
+ @param DigestList Digest list.
+
+ @retval EFI_SUCCESS Hash sequence complete and DigestList is returned.
+**/
+EFI_STATUS
+EFIAPI
+HashCompleteAndExtend (
+ IN HASH_HANDLE HashHandle,
+ IN TPMI_DH_PCR PcrIndex,
+ IN VOID *DataToHash,
+ IN UINTN DataToHashLen,
+ OUT TPML_DIGEST_VALUES *DigestList
+ )
+{
+ TPML_DIGEST_VALUES Digest;
+ HASH_INTERFACE_HOB *HashInterfaceHob;
+ HASH_HANDLE *HashCtx;
+ UINTN Index;
+ EFI_STATUS Status;
+
+ HashInterfaceHob = InternalGetHashInterface ();
+ if (HashInterfaceHob == NULL) {
+ return EFI_UNSUPPORTED;
+ }
+
+ if (HashInterfaceHob->HashInterfaceCount == 0) {
+ return EFI_UNSUPPORTED;
+ }
+
+ HashCtx = (HASH_HANDLE *)HashHandle;
+ ZeroMem (DigestList, sizeof(*DigestList));
+
+ for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {
+ HashInterfaceHob->HashInterface[Index].HashUpdate (HashCtx[Index], DataToHash, DataToHashLen);
+ HashInterfaceHob->HashInterface[Index].HashFinal (HashCtx[Index], &Digest);
+ Tpm2SetHashToDigestList (DigestList, &Digest);
+ }
+
+ FreePool (HashCtx);
+
+ Status = Tpm2PcrExtend (
+ PcrIndex,
+ DigestList
+ );
+ return Status;
+}
+
+/**
+ Hash data and extend to PCR.
+
+ @param PcrIndex PCR to be extended.
+ @param DataToHash Data to be hashed.
+ @param DataToHashLen Data size.
+ @param DigestList Digest list.
+
+ @retval EFI_SUCCESS Hash data and DigestList is returned.
+**/
+EFI_STATUS
+EFIAPI
+HashAndExtend (
+ IN TPMI_DH_PCR PcrIndex,
+ IN VOID *DataToHash,
+ IN UINTN DataToHashLen,
+ OUT TPML_DIGEST_VALUES *DigestList
+ )
+{
+ HASH_INTERFACE_HOB *HashInterfaceHob;
+ HASH_HANDLE HashHandle;
+ EFI_STATUS Status;
+
+ HashInterfaceHob = InternalGetHashInterface ();
+ if (HashInterfaceHob == NULL) {
+ return EFI_UNSUPPORTED;
+ }
+
+ if (HashInterfaceHob->HashInterfaceCount == 0) {
+ return EFI_UNSUPPORTED;
+ }
+
+ HashStart (&HashHandle);
+ HashUpdate (HashHandle, DataToHash, DataToHashLen);
+ Status = HashCompleteAndExtend (HashHandle, PcrIndex, NULL, 0, DigestList);
+
+ return Status;
+}
+
+/**
+ This service register Hash.
+
+ @param HashInterface Hash interface
+
+ @retval EFI_SUCCESS This hash interface is registered successfully.
+ @retval EFI_UNSUPPORTED System does not support register this interface.
+ @retval EFI_ALREADY_STARTED System already register this interface.
+**/
+EFI_STATUS
+EFIAPI
+RegisterHashInterfaceLib (
+ IN HASH_INTERFACE *HashInterface
+ )
+{
+ UINTN Index;
+ HASH_INTERFACE_HOB *HashInterfaceHob;
+ HASH_INTERFACE_HOB LocalHashInterfaceHob;
+ UINT32 HashMask;
+
+ //
+ // Check allow
+ //
+ HashMask = Tpm2GetHashMaskFromAlgo (&HashInterface->HashGuid);
+ if ((HashMask & PcdGet32 (PcdTpm2HashMask)) == 0) {
+ return EFI_UNSUPPORTED;
+ }
+
+ HashInterfaceHob = InternalGetHashInterface ();
+ if (HashInterfaceHob == NULL) {
+ ZeroMem (&LocalHashInterfaceHob, sizeof(LocalHashInterfaceHob));
+ HashInterfaceHob = BuildGuidDataHob (&mHashLibPeiRouterGuid, &LocalHashInterfaceHob, sizeof(LocalHashInterfaceHob));
+ if (HashInterfaceHob == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ }
+
+ if (HashInterfaceHob->HashInterfaceCount >= HASH_COUNT) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ //
+ // Check duplication
+ //
+ for (Index = 0; Index < HashInterfaceHob->HashInterfaceCount; Index++) {
+ if (CompareGuid (&HashInterfaceHob->HashInterface[Index].HashGuid, &HashInterface->HashGuid)) {
+ //
+ // In PEI phase, there will be shadow driver dispatched again.
+ //
+ DEBUG ((EFI_D_ERROR, "RegisterHashInterfaceLib - Override\n"));
+ CopyMem (&HashInterfaceHob->HashInterface[Index], HashInterface, sizeof(*HashInterface));
+ return EFI_SUCCESS;
+ }
+ }
+
+ CopyMem (&HashInterfaceHob->HashInterface[HashInterfaceHob->HashInterfaceCount], HashInterface, sizeof(*HashInterface));
+ HashInterfaceHob->HashInterfaceCount ++;
+
+ return EFI_SUCCESS;
+}
\ No newline at end of file |