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/* ****************************************************************************
* eID Middleware Project.
* Copyright (C) 2008-2009 FedICT.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version
* 3.0 as published by the Free Software Foundation.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, see
* http://www.gnu.org/licenses/.
**************************************************************************** */
#include "ProviderAlgorithms.h"
using namespace eIDMW;
typedef struct
{
ALG_ID aiAlgid;
DWORD dwDefaultLen;
DWORD dwMinLen;
DWORD dwMaxLen;
const char *csShortName;
const char *csLongName;
} ProvAlg;
static ProvAlg tProvAlgs[] =
{
{CALG_MD5, 128, 128, 128, "MD5", "Message Digest 5 (MD5)"},
{CALG_SHA1, 160, 160, 160, "SHA-1", "Secure Hash Algorithm (SHA-1)"},
{CALG_SSL3_SHAMD5, 288, 288, 288, "SSL3 SHAMD5", "SSL3 SHAMD5"},
{CALG_RSA_SIGN, 1024, 1024, 4096, "RSA_SIGN", "RSA Signature"},
};
#define ALGO_COUNT (sizeof(tProvAlgs) / sizeof(ProvAlg))
CProviderAlgorithms::CProviderAlgorithms()
{
iEnumAlgsIndex = 0;
iEnumAlgsExIndex = 0;
}
BOOL CProviderAlgorithms::CheckArgs(int index, DWORD dwDataLen,
LPBYTE pbData, LPDWORD pcbDataLen)
{
BOOL bReturnVal = FALSE;
if (index >= ALGO_COUNT)
SetLastError(ERROR_NO_MORE_ITEMS);
else if (pbData == NULL)
{
bReturnVal = TRUE;
*pcbDataLen = dwDataLen;
}
else if (dwDataLen > *pcbDataLen)
SetLastError(ERROR_MORE_DATA);
else
bReturnVal = TRUE;
if (!bReturnVal)
*pcbDataLen = 0;
return bReturnVal;
}
BOOL CProviderAlgorithms::EnumAlgs(LPBYTE pbData, LPDWORD pcbDataLen, DWORD dwFlags)
{
if (dwFlags & CRYPT_FIRST)
iEnumAlgsIndex = 0;
BOOL bReturnVal = CheckArgs(iEnumAlgsIndex, sizeof(PROV_ENUMALGS),
pbData, pcbDataLen);
if (bReturnVal && pbData != NULL)
{
PROV_ENUMALGS *pProvAlgs = (PROV_ENUMALGS *) pbData;
memset(pProvAlgs, 0, sizeof(PROV_ENUMALGS));
pProvAlgs->aiAlgid = tProvAlgs[iEnumAlgsIndex].aiAlgid;
pProvAlgs->dwBitLen = tProvAlgs[iEnumAlgsIndex].dwDefaultLen;
pProvAlgs->dwNameLen = (DWORD) strlen(tProvAlgs[iEnumAlgsIndex].csShortName) + 1;
memcpy(pProvAlgs->szName, tProvAlgs[iEnumAlgsIndex].csShortName, pProvAlgs->dwNameLen);
*pcbDataLen = sizeof(PROV_ENUMALGS);
iEnumAlgsIndex++;
}
return bReturnVal;
}
BOOL CProviderAlgorithms::EnumAlgsEx(LPBYTE pbData, LPDWORD pcbDataLen, DWORD dwFlags)
{
if (dwFlags & CRYPT_FIRST)
iEnumAlgsExIndex = 0;
BOOL bReturnVal = CheckArgs(iEnumAlgsExIndex, sizeof(PROV_ENUMALGS_EX),
pbData, pcbDataLen);
if (bReturnVal && pbData != NULL)
{
PROV_ENUMALGS_EX *pProvAlgs = (PROV_ENUMALGS_EX *) pbData;
memset(pProvAlgs, 0, sizeof(PROV_ENUMALGS_EX));
pProvAlgs->aiAlgid = tProvAlgs[iEnumAlgsExIndex].aiAlgid;
pProvAlgs->dwDefaultLen = tProvAlgs[iEnumAlgsExIndex].dwDefaultLen;
pProvAlgs->dwMinLen = tProvAlgs[iEnumAlgsExIndex].dwMinLen;
pProvAlgs->dwMaxLen = tProvAlgs[iEnumAlgsExIndex].dwMaxLen;
pProvAlgs->dwProtocols = 0; // ???
pProvAlgs->dwNameLen = (DWORD) strlen(tProvAlgs[iEnumAlgsExIndex].csShortName) + 1;
memcpy(pProvAlgs->szName, tProvAlgs[iEnumAlgsExIndex].csShortName, pProvAlgs->dwNameLen);
pProvAlgs->dwLongNameLen = (DWORD) strlen(tProvAlgs[iEnumAlgsExIndex].csLongName) + 1;
memcpy(pProvAlgs->szLongName, tProvAlgs[iEnumAlgsExIndex].csLongName, pProvAlgs->dwLongNameLen);
*pcbDataLen = sizeof(PROV_ENUMALGS_EX);
iEnumAlgsExIndex++;
}
return bReturnVal;
}
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