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//*****************************************************************//
//*****************************************************************//
//*****************************************************************//
//** **//
//** (C)Copyright 2010, American Megatrends, Inc. **//
//** **//
//** All Rights Reserved. **//
//** **//
//** 5555 Oakbrook Pkwy, Building 200,Norcross, Georgia 30093 **//
//** **//
//** Phone (770)-246-8600 **//
//** **//
//*****************************************************************//
//*****************************************************************//
//*****************************************************************//
// $Archive: /Alaska/BIN/Modules/AMITSE2_0/AMITSE/PasswordEncode/PasswordEncode.c $
//
//<AMI_FHDR_START>
//----------------------------------------------------------------------------
//
// Name: PasswordEncode.c
//
// Description: This file contains code to handle password encoding feature
//
//----------------------------------------------------------------------------
//<AMI_FHDR_END>
//
#include "PasswordEncode.h"
INTN MemCmp(VOID* pDestination, VOID* pSource, UINTN Length);
BOOLEAN TseEfiCompareGuid (IN EFI_GUID *Guid1,IN EFI_GUID *Guid2)
{
return !MemCmp(Guid1,Guid2,sizeof(EFI_GUID));
}
VOID
TseMemCopy (
IN VOID *Destination,
IN VOID *Source,
IN UINTN Length
)
/*++
Routine Description:
Copy Length bytes from Source to Destination.
Arguments:
Destination - Target of copy
Source - Place to copy from
Length - Number of bytes to copy
Returns:
None
--*/
{
CHAR8 *Destination8;
CHAR8 *Source8;
if (Source < Destination) {
Destination8 = (CHAR8 *) Destination + Length - 1;
Source8 = (CHAR8 *) Source + Length - 1;
while (Length--) {
*(Destination8--) = *(Source8--);
}
} else {
Destination8 = (CHAR8 *) Destination;
Source8 = (CHAR8 *) Source;
while (Length--) {
*(Destination8++) = *(Source8++);
}
}
}
//**********************************************************************
//<AMI_PHDR_START>
//
// Procedure: Hash
//
// Description: Allows creating a hash of an arbitrary message digest using one or more hash algorithms
//
// Input:
// This Pointer to the AMI_DIGITAL_SIGNATURE_PROTOCOL instance.
// HashAlgorithm Points to the EFI_GUID which identifies the algorithm to use.
// num_elem Number of blocks to be passed via next argument:addr[]
// addr[] Pointer to array of UINT8* addresses of data blocks to be hashed
// len Pointer to array of integers containing length of each block listed by addr[]
// Hash Holds the resulting hash computed from the message.
//
// Output:
// EFI_SUCCESS Hash returned successfully.
// EFI_INVALID_PARAMETER Message or Hash is NULL
// EFI_UNSUPPORTED The algorithm specified by HashAlgorithm is not supported by this
// driver. Or extend is TRUE and the algorithm doesn't support extending the hash.
//
//<AMI_PHDR_END>
//**********************************************************************
#if TSE_HASH_PASSWORD
EFI_STATUS Hash(
IN CONST EFI_GUID *HashAlgorithm,
IN UINTN num_elem,
IN CONST UINT8 *stringToHash[],
IN CONST UINTN *HashSize,
OUT UINT8 *HashOutput
)
{
BOOLEAN bSha1 = FALSE, bSha256 = FALSE;
UINT32 HashLen=SHA256_DIGEST_SIZE;
// Support only SHA1 & SHA256 hashes
if(TseEfiCompareGuid((EFI_GUID*)HashAlgorithm, &gEfiHashAlgorithmSha1Guid))
{
bSha1 = TRUE;
HashLen = SHA1_DIGEST_SIZE;
}
else
if(TseEfiCompareGuid((EFI_GUID*)HashAlgorithm, &gEfiHashAlgorithmSha256Guid))
{
bSha256 = TRUE;
HashLen = SHA256_DIGEST_SIZE;
}
else
return EFI_UNSUPPORTED;
MemSet(HashOutput, HashLen, 0);
if(bSha1)
sha1_vector(num_elem, stringToHash, HashSize, HashOutput);
else
sha256_vector(num_elem, stringToHash, HashSize, HashOutput);
return EFI_SUCCESS;
}
#endif
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: PasswordEncodeLocal
//
// Description: Encodes the input string
//
// Input: Password : Password array to be encrypted. Encryped
// password is returned in the same array.
// MaxSize : Max size of Password
//
// Output: VOID
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
UINT8 HashOutput[20];
VOID TsePasswordEncodeLocal( CHAR16 *Password, UINTN MaxSize);
VOID PasswordEncode( CHAR16 *Password, UINTN MaxSize)
{
#if TSE_HASH_PASSWORD
UINTN ii;
EFI_STATUS Status;
UINTN HashSize = SHA1_DIGEST_SIZE;
if (IsPasswordSupportNonCaseSensitive ())
{
for ( ii = 0; ii < MaxSize/2; ii++ )
Password[ii] = ((Password[ii]>=L'a')&&(Password[ii]<=L'z'))?(Password[ii]+L'A'-L'a'):Password[ii];
}
Status = Hash(&gEfiHashAlgorithmSha1Guid, TRUE, (CONST UINT8**)&Password, (CONST UINTN*)&MaxSize, (UINT8*)&HashOutput);
if (!EFI_ERROR (Status))
{
MemSet (Password, MaxSize, 0);
TseMemCopy ((UINT8*)Password, (UINT8*)HashOutput, HashSize);
}
#else
TsePasswordEncodeLocal (Password, MaxSize);
#endif
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: IsPasswordSupportNonCaseSensitive
//
// Description: Returns SETUP_PASSWORD_NON_CASE_SENSITIVE token value
//
// Input: void
//
// Output: BOOLEAN
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
BOOLEAN IsPasswordSupportNonCaseSensitive()
{
#if SETUP_PASSWORD_NON_CASE_SENSITIVE
return TRUE;
#endif
return FALSE;
}
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2010, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Building 200,Norcross, Georgia 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
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