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