CryptoPkg/BaseHashApiLib: Implement Unified Hash Calculation API
https://bugzilla.tianocore.org/show_bug.cgi?id=2151 This commit introduces a Unified Hash API to calculate hash using a hashing algorithm specified by the PCD, PcdHashApiLibPolicy. This library interfaces with the various hashing API, such as, MD4, MD5, SHA1, SHA256, SHA512 and SM3_256 implemented in BaseCryptLib. The user can calculate the desired hash by setting PcdHashApiLibPolicy to appropriate value. This feature is documented in the Bugzilla, https://bugzilla.tianocore.org/show_bug.cgi?id=2151. Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Amol N Sukerkar <amol.n.sukerkar@intel.com> Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
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122
CryptoPkg/Include/Library/HashApiLib.h
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122
CryptoPkg/Include/Library/HashApiLib.h
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/** @file
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Unified Hash API Defines
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This API when called will calculate the Hash using the
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hashing algorithm specified by PcdHashApiLibPolicy.
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Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __BASEHASHAPILIB_H_
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#define __BASEHASHAPILIB_H_
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typedef VOID *HASH_API_CONTEXT;
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//
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// Hash Algorithms
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//
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#define HASH_API_ALGO_INVALID 0x00000000
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#define HASH_API_ALGO_MD4 0x00000001
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#define HASH_API_ALGO_MD5 0x00000002
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#define HASH_API_ALGO_SHA1 0x00000003
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#define HASH_API_ALGO_SHA256 0x00000004
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#define HASH_API_ALGO_SHA384 0x00000005
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#define HASH_API_ALGO_SHA512 0x00000006
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#define HASH_API_ALGO_SM3_256 0x00000007
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/**
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Retrieves the size, in bytes, of the context buffer required for hash operations.
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@return The size, in bytes, of the context buffer required for hash operations.
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**/
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UINTN
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EFIAPI
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HashApiGetContextSize (
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VOID
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);
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/**
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Init hash sequence.
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@param[out] HashContext Hash context.
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@retval TRUE Hash start and HashHandle returned.
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@retval FALSE Hash Init unsuccessful.
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**/
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BOOLEAN
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EFIAPI
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HashApiInit (
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OUT HASH_API_CONTEXT HashContext
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);
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/**
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Makes a copy of an existing hash context.
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@param[in] HashContext Hash context.
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@param[out] NewHashContext New copy of hash context.
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@retval TRUE Hash context copy succeeded.
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@retval FALSE Hash context copy failed.
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**/
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BOOLEAN
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EFIAPI
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HashApiDuplicate (
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IN HASH_API_CONTEXT HashContext,
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OUT HASH_API_CONTEXT NewHashContext
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);
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/**
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Update hash data.
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@param[in] HashContext Hash context.
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@param[in] DataToHash Data to be hashed.
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@param[in] DataToHashLen Data size.
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@retval TRUE Hash updated.
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@retval FALSE Hash updated unsuccessful.
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**/
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BOOLEAN
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EFIAPI
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HashApiUpdate (
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IN HASH_API_CONTEXT HashContext,
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IN VOID *DataToHash,
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IN UINTN DataToHashLen
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);
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/**
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Hash complete.
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@param[in] HashContext Hash context.
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@param[out] Digest Hash Digest.
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@retval TRUE Hash complete and Digest is returned.
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@retval FALSE Hash complete unsuccessful.
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**/
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BOOLEAN
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EFIAPI
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HashApiFinal (
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IN HASH_API_CONTEXT HashContext,
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OUT UINT8 *Digest
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);
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/**
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Computes hash message digest of a input data buffer.
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@param[in] DataToHash Data to be hashed.
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@param[in] DataToHashLen Data size.
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@param[out] Digest Hash Digest.
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@retval TRUE Hash digest computation succeeded.
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@retval FALSE Hash digest computation failed.
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**/
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BOOLEAN
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EFIAPI
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HashApiHashAll (
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IN CONST VOID *DataToHash,
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IN UINTN DataToHashLen,
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OUT UINT8 *Digest
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);
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#endif
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