a23fdff6fb
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1792 HmacXxxInit() is supposed to be initialize user supplied buffer as HMAC context, as well as user supplied key. Currently it has no real use cases. Due to BZ1792, the user has no way to get correct size of context buffer after it's fixed, and then cannot make use of HmacXxxInit to initialize it. So it's decided to replace it with HmacXxxSetKey to keep the functionality of supplying a key to HMAC, but drop all other initialization works. The user can still get HMAC context via HmacXxxNew interface, which hides the details about the context. Cc: Xiaoyu Lu <xiaoyux.lu@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Jian J Wang <jian.j.wang@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Xiaoyu Lu <xiaoyux.lu@intel.com>
160 lines
3.5 KiB
C
160 lines
3.5 KiB
C
/** @file
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HMAC-SHA256 Wrapper Implementation which does not provide real capabilities.
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Copyright (c) 2016 - 2017, 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 "InternalCryptLib.h"
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/**
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Retrieves the size, in bytes, of the context buffer required for HMAC-SHA256 operations.
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(NOTE: This API is deprecated.
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Use HmacSha256New() / HmacSha256Free() for HMAC-SHA256 Context operations.)
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Return zero to indicate this interface is not supported.
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@retval 0 This interface is not supported.
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**/
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UINTN
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EFIAPI
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HmacSha256GetContextSize (
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VOID
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)
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{
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ASSERT (FALSE);
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return 0;
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}
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/**
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Allocates and initializes one HMAC_CTX context for subsequent HMAC-SHA256 use.
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Return NULL to indicate this interface is not supported.
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@return NULL This interface is not supported..
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**/
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VOID *
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EFIAPI
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HmacSha256New (
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VOID
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)
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{
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ASSERT (FALSE);
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return NULL;
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}
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/**
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Release the specified HMAC_CTX context.
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This function will do nothing.
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@param[in] HmacSha256Ctx Pointer to the HMAC_CTX context to be released.
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**/
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VOID
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EFIAPI
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HmacSha256Free (
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IN VOID *HmacSha256Ctx
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)
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{
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ASSERT (FALSE);
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return;
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}
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/**
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Set user-supplied key for subsequent use. It must be done before any
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calling to HmacSha256Update().
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Return FALSE to indicate this interface is not supported.
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@param[out] HmacSha256Context Pointer to HMAC-SHA256 context.
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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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@retval FALSE This interface is not supported.
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**/
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BOOLEAN
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EFIAPI
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HmacSha256SetKey (
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OUT VOID *HmacSha256Context,
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IN CONST UINT8 *Key,
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IN UINTN KeySize
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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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/**
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Makes a copy of an existing HMAC-SHA256 context.
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Return FALSE to indicate this interface is not supported.
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@param[in] HmacSha256Context Pointer to HMAC-SHA256 context being copied.
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@param[out] NewHmacSha256Context Pointer to new HMAC-SHA256 context.
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@retval FALSE This interface is not supported.
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**/
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BOOLEAN
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EFIAPI
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HmacSha256Duplicate (
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IN CONST VOID *HmacSha256Context,
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OUT VOID *NewHmacSha256Context
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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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/**
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Digests the input data and updates HMAC-SHA256 context.
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Return FALSE to indicate this interface is not supported.
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@param[in, out] HmacSha256Context Pointer to the HMAC-SHA256 context.
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@param[in] Data Pointer to the buffer containing the data to be digested.
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@param[in] DataSize Size of Data buffer in bytes.
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@retval FALSE This interface is not supported.
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**/
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BOOLEAN
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EFIAPI
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HmacSha256Update (
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IN OUT VOID *HmacSha256Context,
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IN CONST VOID *Data,
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IN UINTN DataSize
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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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/**
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Completes computation of the HMAC-SHA256 digest value.
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Return FALSE to indicate this interface is not supported.
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@param[in, out] HmacSha256Context Pointer to the HMAC-SHA256 context.
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@param[out] HmacValue Pointer to a buffer that receives the HMAC-SHA256 digest
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value (32 bytes).
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@retval FALSE This interface is not supported.
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**/
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BOOLEAN
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EFIAPI
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HmacSha256Final (
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IN OUT VOID *HmacSha256Context,
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OUT UINT8 *HmacValue
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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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