mirror of https://github.com/acidanthera/audk.git
137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/*++
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Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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Speaker.h
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Abstract:
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EFI Speaker Interface Protocol
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--*/
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#ifndef _PEI_SHA256_HASH_H
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#define _PEI_SHA256_HASH_H
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//
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// Global ID Speaker Interface
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//
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#define PEI_SHA256_HASH_PPI_GUID \
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{ \
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0x950e191b, 0x8524, 0x4f51, 0x80, 0xa1, 0x5c, 0x4f, 0x1b, 0x3, 0xf3, 0x5c \
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}
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typedef struct _PEI_SHA256_HASH_PPI PEI_SHA256_HASH_PPI;
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/**
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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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typedef
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UINTN
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(EFIAPI *HASH_GET_CONTEXT_SIZE)(
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VOID
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);
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/**
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Initializes user-supplied memory pointed by HashContext as hash context for
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subsequent use.
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If HashContext is NULL, then ASSERT().
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@param[in, out] HashContext Pointer to Context being initialized.
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@retval TRUE HASH context initialization succeeded.
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@retval FALSE HASH context initialization failed.
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**/
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typedef
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BOOLEAN
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(EFIAPI *HASH_INIT)(
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IN OUT VOID *HashContext
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);
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/**
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Performs digest on a data buffer of the specified length. This function can
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be called multiple times to compute the digest of long or discontinuous data streams.
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If HashContext is NULL, then ASSERT().
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@param[in, out] HashContext Pointer to the MD5 context.
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@param[in] Data Pointer to the buffer containing the data to be hashed.
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@param[in] DataLength Length of Data buffer in bytes.
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@retval TRUE HASH data digest succeeded.
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@retval FALSE Invalid HASH context. After HashFinal function has been called, the
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HASH context cannot be reused.
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**/
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typedef
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BOOLEAN
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(EFIAPI *HASH_UPDATE)(
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IN OUT VOID *HashContext,
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IN CONST VOID *Data,
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IN UINTN DataLength
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);
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/**
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Completes hash computation and retrieves the digest value into the specified
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memory. After this function has been called, the context cannot be used again.
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If HashContext is NULL, then ASSERT().
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If HashValue is NULL, then ASSERT().
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@param[in, out] HashContext Pointer to the MD5 context
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@param[out] HashValue Pointer to a buffer that receives the HASH digest
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value.
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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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typedef
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BOOLEAN
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(EFIAPI *HASH_FINAL)(
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IN OUT VOID *HashContext,
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OUT UINT8 *HashValue
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);
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//
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// Ppi definition
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//
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typedef struct _PEI_SHA256_HASH_PPI {
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//
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// Pointer to Hash GetContentSize function
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//
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HASH_GET_CONTEXT_SIZE GetContextSize;
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//
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// Pointer to Hash Init function
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//
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HASH_INIT HashInit;
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//
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// Pointer to Hash Update function
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//
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HASH_UPDATE HashUpdate;
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//
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// Pointer to Hash Final function
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//
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HASH_FINAL HashFinal;
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} PEI_SHA256_HASH_PPI;
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extern EFI_GUID gPeiSha256HashPpiGuid;
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#endif
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