Source code of Windows XP (NT5)
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176 lines
2.9 KiB

//
//
#ifndef KERNEL_MODE
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <windows.h>
#else
#include <ntddk.h>
#include <winerror.h>
#endif
#include <string.h>
#include <malloc.h>
#include <security.h>
#include <cryptdll.h>
#include <kerbcon.h>
#include "sha.h"
NTSTATUS
ShaWrapInitialize(ULONG dwSeed,
PCHECKSUM_BUFFER * ppcsBuffer);
NTSTATUS
ShaWrapInitializeEx(PUCHAR Seed, ULONG dwSeedLength, ULONG MessageType,
PCHECKSUM_BUFFER * ppcsBuffer);
NTSTATUS
ShaWrapSum( PCHECKSUM_BUFFER pcsBuffer,
ULONG cbData,
PUCHAR pbData );
NTSTATUS
ShaWrapFinalize( PCHECKSUM_BUFFER pcsBuffer,
PUCHAR pbSum);
NTSTATUS
ShaWrapFinish(PCHECKSUM_BUFFER * ppcsBuffer);
CHECKSUM_FUNCTION csfSHA = {
KERB_CHECKSUM_SHA1,
A_SHA_DIGEST_LEN,
CKSUM_COLLISION,
ShaWrapInitialize,
ShaWrapSum,
ShaWrapFinalize,
ShaWrapFinish,
ShaWrapInitializeEx,
NULL
};
#ifdef KERNEL_MODE
#pragma alloc_text( PAGEMSG, ShaWrapInitialize )
#pragma alloc_text( PAGEMSG, ShaWrapSum )
#pragma alloc_text( PAGEMSG, ShaWrapFinalize )
#pragma alloc_text( PAGEMSG, ShaWrapFinish )
#pragma alloc_text( PAGEMSG, ShaWrapInitializeEx )
#endif
NTSTATUS
ShaWrapInitialize(
ULONG dwSeed,
PCHECKSUM_BUFFER * ppcsBuffer)
{
A_SHA_CTX * pContext;
#ifdef KERNEL_MODE
pContext = ExAllocatePool( NonPagedPool, sizeof( A_SHA_CTX ) );
#else
pContext = LocalAlloc( LMEM_FIXED, sizeof( A_SHA_CTX ) );
#endif
if ( pContext )
{
A_SHAInit( pContext );
*ppcsBuffer = pContext;
return( SEC_E_OK );
}
return( STATUS_NO_MEMORY );
}
NTSTATUS
ShaWrapInitializeEx(
PUCHAR Seed,
ULONG SeedLength,
ULONG MessageType,
PCHECKSUM_BUFFER * ppcsBuffer)
{
A_SHA_CTX * pContext;
#ifdef KERNEL_MODE
pContext = ExAllocatePool( NonPagedPool, sizeof( A_SHA_CTX ) );
#else
pContext = LocalAlloc( LMEM_FIXED, sizeof( A_SHA_CTX ) );
#endif
if ( pContext )
{
A_SHAInit( pContext );
*ppcsBuffer = pContext;
return( SEC_E_OK );
}
return( STATUS_NO_MEMORY );
}
NTSTATUS
ShaWrapSum(
PCHECKSUM_BUFFER pcsBuffer,
ULONG cbData,
PUCHAR pbData )
{
A_SHA_CTX * pContext;
pContext = (A_SHA_CTX *) pcsBuffer ;
A_SHAUpdate( pContext, pbData, cbData );
return( STATUS_SUCCESS );
}
NTSTATUS
ShaWrapFinalize(
PCHECKSUM_BUFFER pcsBuffer,
PUCHAR pbSum)
{
A_SHA_CTX * pContext;
pContext = (A_SHA_CTX *) pcsBuffer ;
A_SHAFinal( pContext, pbSum );
return( STATUS_SUCCESS );
}
NTSTATUS
ShaWrapFinish(
PCHECKSUM_BUFFER * ppcsBuffer)
{
RtlZeroMemory( *ppcsBuffer, sizeof( A_SHA_CTX ) );
#ifdef KERNEL_MODE
ExFreePool( *ppcsBuffer );
#else
LocalFree( *ppcsBuffer );
#endif
*ppcsBuffer = NULL ;
return( STATUS_SUCCESS );
}