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| author | Min M Xu <min.m.xu@intel.com> | 2024-04-15 15:55:51 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-04-17 03:04:13 +0000 |
| commit | 93ff80a218690736d58d1bb8ded8bad8ec59c336 (patch) | |
| tree | 62a32fe6b66c4750faa2af987c925398525a3f28 | |
| parent | 71aaf7a3086f63bb2a883e3371317c700a0f8e69 (diff) | |
| download | edk2-93ff80a218690736d58d1bb8ded8bad8ec59c336.tar.gz edk2-93ff80a218690736d58d1bb8ded8bad8ec59c336.tar.bz2 edk2-93ff80a218690736d58d1bb8ded8bad8ec59c336.zip | |
OmvfPkg/HashLibTdx: Add HashLibTdx
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4752
This library is the one of SecurityPkg/Library/HashLibTdx. It is
designed for Intel TDX enlightened OVMF. So moving it from SecurityPkg
to OvmfPkg. To prevent breaking the build, the moving is splitted into 2
patch. SecurityPkg/Library/HashLibTdx will be deleted in the next patch.
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
| -rw-r--r-- | OvmfPkg/Library/HashLibTdx/HashLibTdx.c | 213 | ||||
| -rw-r--r-- | OvmfPkg/Library/HashLibTdx/HashLibTdx.inf | 37 |
2 files changed, 250 insertions, 0 deletions
diff --git a/OvmfPkg/Library/HashLibTdx/HashLibTdx.c b/OvmfPkg/Library/HashLibTdx/HashLibTdx.c new file mode 100644 index 0000000000..3cebbc70d3 --- /dev/null +++ b/OvmfPkg/Library/HashLibTdx/HashLibTdx.c @@ -0,0 +1,213 @@ +/** @file
+ This library is HashLib for Tdx.
+
+Copyright (c) 2021 - 2022, Intel Corporation. All rights reserved. <BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiPei.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+#include <Library/HashLib.h>
+#include <Library/TdxLib.h>
+#include <Protocol/CcMeasurement.h>
+
+EFI_GUID mSha384Guid = HASH_ALGORITHM_SHA384_GUID;
+
+//
+// Currently TDX supports SHA384.
+//
+HASH_INTERFACE mHashInterface = {
+ { 0 }, NULL, NULL, NULL
+};
+
+UINTN mHashInterfaceCount = 0;
+
+/**
+ 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_HANDLE HashCtx;
+
+ if (mHashInterfaceCount == 0) {
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+ }
+
+ HashCtx = 0;
+ mHashInterface.HashInit (&HashCtx);
+
+ *HashHandle = 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
+ )
+{
+ if (mHashInterfaceCount == 0) {
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+ }
+
+ mHashInterface.HashUpdate (HashHandle, 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;
+ EFI_STATUS Status;
+
+ if (mHashInterfaceCount == 0) {
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+ }
+
+ ZeroMem (DigestList, sizeof (*DigestList));
+
+ mHashInterface.HashUpdate (HashHandle, DataToHash, DataToHashLen);
+ mHashInterface.HashFinal (HashHandle, &Digest);
+
+ CopyMem (
+ &DigestList->digests[0],
+ &Digest.digests[0],
+ sizeof (Digest.digests[0])
+ );
+ DigestList->count++;
+
+ ASSERT (DigestList->count == 1 && DigestList->digests[0].hashAlg == TPM_ALG_SHA384);
+
+ Status = TdExtendRtmr (
+ (UINT32 *)DigestList->digests[0].digest.sha384,
+ SHA384_DIGEST_SIZE,
+ (UINT8)PcrIndex
+ );
+
+ ASSERT (!EFI_ERROR (Status));
+ return Status;
+}
+
+/**
+ Hash data and extend to RTMR.
+
+ @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_HANDLE HashHandle;
+ EFI_STATUS Status;
+
+ if (mHashInterfaceCount == 0) {
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+ }
+
+ ASSERT (TdIsEnabled ());
+
+ 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
+ )
+{
+ //
+ // HashLibTdx is designed for Tdx guest. So if it is not Tdx guest,
+ // return EFI_UNSUPPORTED.
+ //
+ if (!TdIsEnabled ()) {
+ return EFI_UNSUPPORTED;
+ }
+
+ //
+ // Only SHA384 is allowed.
+ //
+ if (!CompareGuid (&mSha384Guid, &HashInterface->HashGuid)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ if (mHashInterfaceCount != 0) {
+ ASSERT (FALSE);
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ CopyMem (&mHashInterface, HashInterface, sizeof (*HashInterface));
+ mHashInterfaceCount++;
+
+ return EFI_SUCCESS;
+}
diff --git a/OvmfPkg/Library/HashLibTdx/HashLibTdx.inf b/OvmfPkg/Library/HashLibTdx/HashLibTdx.inf new file mode 100644 index 0000000000..946132124c --- /dev/null +++ b/OvmfPkg/Library/HashLibTdx/HashLibTdx.inf @@ -0,0 +1,37 @@ +## @file
+# Provides hash service by registered hash handler in Tdx.
+#
+# This library is HashLib for Tdx. Currently only SHA384 is supported.
+#
+# Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = HashLibTdx
+ FILE_GUID = 77F6EA3E-1ABA-4467-A447-926E8CEB2D13
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = HashLib|SEC DXE_DRIVER
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = X64
+#
+
+[Sources]
+ HashLibTdx.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ SecurityPkg/SecurityPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ BaseMemoryLib
+ DebugLib
+ PcdLib
+ TdxLib
|