1 files changed, 122 insertions, 0 deletions
diff --git a/CryptoPkg/Include/Library/HashApiLib.h b/CryptoPkg/Include/Library/HashApiLib.h
new file mode 100644
index 0000000000..22068e5a17
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+++ b/CryptoPkg/Include/Library/HashApiLib.h
@@ -0,0 +1,122 @@
+/** @file
+  Unified Hash API Defines
+
+  This API when called will calculate the Hash using the
+  hashing algorithm specified by PcdHashApiLibPolicy.
+
+  Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __BASEHASHAPILIB_H_
+#define __BASEHASHAPILIB_H_
+
+typedef VOID  *HASH_API_CONTEXT;
+
+//
+// Hash Algorithms
+//
+#define HASH_API_ALGO_INVALID    0x00000000
+#define HASH_API_ALGO_MD4        0x00000001
+#define HASH_API_ALGO_MD5        0x00000002
+#define HASH_API_ALGO_SHA1       0x00000003
+#define HASH_API_ALGO_SHA256     0x00000004
+#define HASH_API_ALGO_SHA384     0x00000005
+#define HASH_API_ALGO_SHA512     0x00000006
+#define HASH_API_ALGO_SM3_256    0x00000007
+
+/**
+  Retrieves the size, in bytes, of the context buffer required for hash operations.
+
+  @return  The size, in bytes, of the context buffer required for hash operations.
+**/
+UINTN
+EFIAPI
+HashApiGetContextSize (
+  VOID
+  );
+
+/**
+  Init hash sequence.
+
+  @param[out] HashContext   Hash context.
+
+  @retval TRUE         Hash start and HashHandle returned.
+  @retval FALSE        Hash Init unsuccessful.
+**/
+BOOLEAN
+EFIAPI
+HashApiInit (
+  OUT HASH_API_CONTEXT  HashContext
+  );
+
+/**
+  Makes a copy of an existing hash context.
+
+  @param[in]  HashContext     Hash context.
+  @param[out] NewHashContext  New copy of hash context.
+
+  @retval TRUE         Hash context copy succeeded.
+  @retval FALSE        Hash context copy failed.
+**/
+BOOLEAN
+EFIAPI
+HashApiDuplicate (
+  IN  HASH_API_CONTEXT  HashContext,
+  OUT HASH_API_CONTEXT  NewHashContext
+  );
+
+/**
+  Update hash data.
+
+  @param[in] HashContext   Hash context.
+  @param[in] DataToHash    Data to be hashed.
+  @param[in] DataToHashLen Data size.
+
+  @retval TRUE         Hash updated.
+  @retval FALSE        Hash updated unsuccessful.
+**/
+BOOLEAN
+EFIAPI
+HashApiUpdate (
+  IN HASH_API_CONTEXT  HashContext,
+  IN VOID              *DataToHash,
+  IN UINTN             DataToHashLen
+  );
+
+/**
+  Hash complete.
+
+  @param[in]  HashContext  Hash context.
+  @param[out] Digest       Hash Digest.
+
+  @retval TRUE         Hash complete and Digest is returned.
+  @retval FALSE        Hash complete unsuccessful.
+**/
+BOOLEAN
+EFIAPI
+HashApiFinal (
+  IN  HASH_API_CONTEXT  HashContext,
+  OUT UINT8             *Digest
+  );
+
+/**
+  Computes hash message digest of a input data buffer.
+
+  @param[in]  DataToHash     Data to be hashed.
+  @param[in]  DataToHashLen  Data size.
+  @param[out] Digest         Hash Digest.
+
+  @retval TRUE   Hash digest computation succeeded.
+  @retval FALSE  Hash digest computation failed.
+**/
+BOOLEAN
+EFIAPI
+HashApiHashAll (
+  IN  CONST VOID  *DataToHash,
+  IN  UINTN       DataToHashLen,
+  OUT UINT8       *Digest
+  );
+
+#endif