https://bugzilla.tianocore.org/show_bug.cgi?id=2493 The BaseCryptLib was expanded to add the HkdfSha256ExtractAndExpand() service in the following commit:4b1b7c1913When BaseCryptLibNull was added in the commit below, this new service was not included.d95de082daCc: Jian J Wang <jian.j.wang@intel.com> Cc: Xiaoyu Lu <xiaoyux.lu@intel.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
		
			
				
	
	
		
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			44 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/** @file
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  HMAC-SHA256 KDF Wrapper Implementation which does not provide real capabilities.
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Copyright (c) 2018 - 2019, 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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#include <Library/BaseCryptLib.h>
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#include <Library/DebugLib.h>
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/**
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  Derive key data using HMAC-SHA256 based KDF.
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  @param[in]   Key              Pointer to the user-supplied key.
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  @param[in]   KeySize          Key size in bytes.
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  @param[in]   Salt             Pointer to the salt(non-secret) value.
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  @param[in]   SaltSize         Salt size in bytes.
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  @param[in]   Info             Pointer to the application specific info.
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  @param[in]   InfoSize         Info size in bytes.
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  @param[out]  Out              Pointer to buffer to receive hkdf value.
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  @param[in]   OutSize          Size of hkdf bytes to generate.
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  @retval TRUE   Hkdf generated successfully.
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  @retval FALSE  Hkdf generation failed.
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**/
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BOOLEAN
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EFIAPI
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HkdfSha256ExtractAndExpand (
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  IN   CONST UINT8  *Key,
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  IN   UINTN        KeySize,
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  IN   CONST UINT8  *Salt,
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  IN   UINTN        SaltSize,
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  IN   CONST UINT8  *Info,
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  IN   UINTN        InfoSize,
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  OUT  UINT8        *Out,
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  IN   UINTN        OutSize
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  )
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{
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  ASSERT (FALSE);
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  return FALSE;
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}
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