--- /dev/null
+/** @file\r
+ SHA-256 Digest Wrapper Null Implementation.\r
+\r
+Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
+\r
+**/\r
+\r
+#include "InternalCryptLib.h"\r
+\r
+/**\r
+ Retrieves the size, in bytes, of the context buffer required for SHA-256 hash operations.\r
+\r
+ @return The size, in bytes, of the context buffer required for SHA-256 hash operations.\r
+\r
+**/\r
+UINTN\r
+EFIAPI\r
+Sha256GetContextSize (\r
+ VOID\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return 0;\r
+}\r
+\r
+/**\r
+ Initializes user-supplied memory pointed by Sha256Context as SHA-256 hash context for\r
+ subsequent use.\r
+\r
+ If Sha256Context is NULL, then return FALSE.\r
+\r
+ @param[out] Sha256Context Pointer to SHA-256 context being initialized.\r
+\r
+ @retval TRUE SHA-256 context initialization succeeded.\r
+ @retval FALSE SHA-256 context initialization failed.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+Sha256Init (\r
+ OUT VOID *Sha256Context\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return FALSE;\r
+}\r
+\r
+/**\r
+ Makes a copy of an existing SHA-256 context.\r
+\r
+ If Sha256Context is NULL, then return FALSE.\r
+ If NewSha256Context is NULL, then return FALSE.\r
+\r
+ @param[in] Sha256Context Pointer to SHA-256 context being copied.\r
+ @param[out] NewSha256Context Pointer to new SHA-256 context.\r
+\r
+ @retval TRUE SHA-256 context copy succeeded.\r
+ @retval FALSE SHA-256 context copy failed.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+Sha256Duplicate (\r
+ IN CONST VOID *Sha256Context,\r
+ OUT VOID *NewSha256Context\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return FALSE;\r
+}\r
+\r
+/**\r
+ Digests the input data and updates SHA-256 context.\r
+\r
+ This function performs SHA-256 digest on a data buffer of the specified size.\r
+ It can be called multiple times to compute the digest of long or discontinuous data streams.\r
+ SHA-256 context should be already correctly initialized by Sha256Init(), and should not be finalized\r
+ by Sha256Final(). Behavior with invalid context is undefined.\r
+\r
+ If Sha256Context is NULL, then return FALSE.\r
+\r
+ @param[in, out] Sha256Context Pointer to the SHA-256 context.\r
+ @param[in] Data Pointer to the buffer containing the data to be hashed.\r
+ @param[in] DataSize Size of Data buffer in bytes.\r
+\r
+ @retval TRUE SHA-256 data digest succeeded.\r
+ @retval FALSE SHA-256 data digest failed.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+Sha256Update (\r
+ IN OUT VOID *Sha256Context,\r
+ IN CONST VOID *Data,\r
+ IN UINTN DataSize\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return FALSE;\r
+}\r
+\r
+/**\r
+ Completes computation of the SHA-256 digest value.\r
+\r
+ This function completes SHA-256 hash computation and retrieves the digest value into\r
+ the specified memory. After this function has been called, the SHA-256 context cannot\r
+ be used again.\r
+ SHA-256 context should be already correctly initialized by Sha256Init(), and should not be\r
+ finalized by Sha256Final(). Behavior with invalid SHA-256 context is undefined.\r
+\r
+ If Sha256Context is NULL, then return FALSE.\r
+ If HashValue is NULL, then return FALSE.\r
+\r
+ @param[in, out] Sha256Context Pointer to the SHA-256 context.\r
+ @param[out] HashValue Pointer to a buffer that receives the SHA-256 digest\r
+ value (32 bytes).\r
+\r
+ @retval TRUE SHA-256 digest computation succeeded.\r
+ @retval FALSE SHA-256 digest computation failed.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+Sha256Final (\r
+ IN OUT VOID *Sha256Context,\r
+ OUT UINT8 *HashValue\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return FALSE;\r
+}\r
+\r
+/**\r
+ Computes the SHA-256 message digest of a input data buffer.\r
+\r
+ This function performs the SHA-256 message digest of a given data buffer, and places\r
+ the digest value into the specified memory.\r
+\r
+ If this interface is not supported, then return FALSE.\r
+\r
+ @param[in] Data Pointer to the buffer containing the data to be hashed.\r
+ @param[in] DataSize Size of Data buffer in bytes.\r
+ @param[out] HashValue Pointer to a buffer that receives the SHA-256 digest\r
+ value (32 bytes).\r
+\r
+ @retval TRUE SHA-256 digest computation succeeded.\r
+ @retval FALSE SHA-256 digest computation failed.\r
+ @retval FALSE This interface is not supported.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+Sha256HashAll (\r
+ IN CONST VOID *Data,\r
+ IN UINTN DataSize,\r
+ OUT UINT8 *HashValue\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+ return FALSE;\r
+}\r