This is the HashApiInstance implementation for SHA256 which registers the
SHA256 hash library in CryptoPkg with BaseHashLib based on whether a platform
supports SHA256 hash algorithm (provided by PcdTpm2HashMask).
Signed-off-by: Sukerkar, Amol N <amol.n.suker...@intel.com>
---
SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.c | 128
++++++++++++++++++++
SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.inf | 40
++++++
SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.uni | 16 +++
SecurityPkg/SecurityPkg.dsc | 1 +
4 files changed, 185 insertions(+)
diff --git a/SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.c
b/SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.c
new file mode 100644
index 000000000000..129d60a387fd
--- /dev/null
+++ b/SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.c
@@ -0,0 +1,128 @@
+/** @file
+ This library is BaseCrypto SHA256 hash instance.
+ It can be registered to BaseCrypto router, to serve as hash engine.
+
+Copyright (c) 2013 - 2019, 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/BaseCryptLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/HashLib.h>
+
+/**
+ 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
+Sha256_Init (
+ OUT HASH_HANDLE *HashHandle
+ )
+{
+ VOID *Sha256Ctx;
+ UINTN CtxSize;
+
+ CtxSize = Sha256GetContextSize ();
+ Sha256Ctx = AllocatePool (CtxSize);
+ ASSERT (Sha256Ctx != NULL);
+
+ Sha256Init (Sha256Ctx);
+
+ *HashHandle = (HASH_HANDLE)Sha256Ctx;
+
+ 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
+Sha256_Update (
+ IN HASH_HANDLE HashHandle,
+ IN VOID *DataToHash,
+ IN UINTN DataToHashLen
+ )
+{
+ VOID *Sha256Ctx;
+
+ Sha256Ctx = (VOID *)HashHandle;
+ Sha256Update (Sha256Ctx, DataToHash, DataToHashLen);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Complete hash sequence complete.
+
+ @param HashHandle Hash handle.
+ @param DigestList Digest list.
+
+ @retval EFI_SUCCESS Hash sequence complete and DigestList is returned.
+**/
+EFI_STATUS
+EFIAPI
+Sha256_Final (
+ IN HASH_HANDLE HashHandle,
+ OUT UINT8 **Digest
+ )
+{
+ UINT8 Sha256Digest[SHA256_DIGEST_SIZE];
+ VOID *Sha256Ctx;
+
+ Sha256Ctx = (VOID *)HashHandle;
+ Sha256Final (Sha256Ctx, Sha256Digest);
+
+ CopyMem (*Digest, Sha256Digest, SHA256_DIGEST_SIZE);
+
+ FreePool (Sha256Ctx);
+
+ return EFI_SUCCESS;
+}
+
+HASH_INTERFACE_UNIFIED_API mSha256InternalHashApiInstance = {
+ HASH_ALGORITHM_SHA256_GUID,
+ Sha256_Init,
+ Sha256_Update,
+ Sha256_Final,
+};
+
+/**
+ The function register SHA256 instance.
+
+ @retval EFI_SUCCESS SHA256 instance is registered, or system dose not
surpport registr SHA256 instance
+**/
+EFI_STATUS
+EFIAPI
+HashApiInstanceSha256Constructor (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+
+ Status = RegisterHashApiLib (&mSha256InternalHashApiInstance);
+ if ((Status == EFI_SUCCESS) || (Status == EFI_UNSUPPORTED)) {
+ //
+ // Unsupported means platform policy does not need this instance enabled.
+ //
+ DEBUG ((DEBUG_ERROR, "[ansukerk]: Hash Interface SHA256 is registered\n"));
+ return EFI_SUCCESS;
+ }
+ return Status;
+}
diff --git
a/SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.inf
b/SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.inf
new file mode 100644
index 000000000000..08d802cd69f4
--- /dev/null
+++ b/SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.inf
@@ -0,0 +1,40 @@
+## @file
+# Provides BaseCrypto SHA1 hash service
+#
+# This library can be registered to BaseCrypto router, to serve as hash
engine.
+#
+# Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = HashApiInstanceSha256
+ MODULE_UNI_FILE = HashApiInstanceSha256.uni
+ FILE_GUID = 9A7A6AB4-9DA6-4aa4-90CB-6D4B79EDA7B9
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = NULL
+ CONSTRUCTOR = HashApiInstanceSha256Constructor
+
+#
+# The following information is for reference only and not required by the
build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64
+#
+
+[Sources]
+ HashApiInstanceSha256.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ SecurityPkg/SecurityPkg.dec
+ CryptoPkg/CryptoPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ BaseMemoryLib
+ DebugLib
+ MemoryAllocationLib
+ BaseCryptLib
diff --git
a/SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.uni
b/SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.uni
new file mode 100644
index 000000000000..b2121464c552
--- /dev/null
+++ b/SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.uni
@@ -0,0 +1,16 @@
+// /** @file
+// Provides BaseCrypto SHA256 hash service
+//
+// This library can be registered to BaseCrypto router, to serve as hash
engine.
+//
+// Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR>
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT #language en-US "Provides BaseCrypto
SHA256 hash service API"
+
+#string STR_MODULE_DESCRIPTION #language en-US "This library can be
registered to Base Hash API, to serve as hash engine."
+
diff --git a/SecurityPkg/SecurityPkg.dsc b/SecurityPkg/SecurityPkg.dsc
index 6c0832d48e88..95a5710735e0 100644
--- a/SecurityPkg/SecurityPkg.dsc
+++ b/SecurityPkg/SecurityPkg.dsc
@@ -245,6 +245,7 @@ [Components.IA32, Components.X64]
# Hash API
#
SecurityPkg/Library/HashApiInstanceSha1/HashApiInstanceSha1.inf
+ SecurityPkg/Library/HashApiInstanceSha256/HashApiInstanceSha256.inf
#
# TPM
--
2.16.2.windows.1
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