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/*
* Copyright (C) 2015 Nikos Mavrogiannopoulos
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* GnuTLS is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuTLS 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GnuTLS. If not, see <https://www.gnu.org/licenses/>.
*/
/* Parts copied from GnuTLS example programs. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <windows.h>
#include <wincrypt.h>
#include <winbase.h>
#include <ncrypt.h>
#include <string.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
#include <gnutls/abstract.h>
#include <gnutls/system-keys.h>
#include <stdio.h>
#include <assert.h>
#include "../cert-common.h"
#include "ncrypt-int.h"
#include "utils.h"
/* This is a dummy replacement of ncrypt. It will pretend to open a specified
* key by using a hardcoded one, and perform operations using that key.
*/
#define debug_func() fprintf(stderr, "%s: %d\n", __func__, __LINE__);
__declspec(dllexport) SECURITY_STATUS WINAPI
NCryptDeleteKey(NCRYPT_KEY_HANDLE hKey, DWORD dwFlags)
{
debug_func();
return 0;
}
__declspec(dllexport) SECURITY_STATUS WINAPI NCryptOpenStorageProvider(
NCRYPT_PROV_HANDLE *phProvider, LPCWSTR pszProviderName, DWORD dwFlags)
{
debug_func();
*phProvider = 0;
return 0x0000ffff;
}
__declspec(dllexport) SECURITY_STATUS WINAPI
NCryptOpenKey(NCRYPT_PROV_HANDLE hProvider, NCRYPT_KEY_HANDLE *phKey,
LPCWSTR pszKeyName, DWORD dwLegacyKeySpec, DWORD dwFlags)
{
gnutls_privkey_t p;
debug_func();
assert_int_nequal(gnutls_privkey_init(&p), 0);
assert_int_nequal(gnutls_privkey_import_x509_raw(
p, &key_dat, GNUTLS_X509_FMT_PEM, NULL, 0),
0);
*phKey = (NCRYPT_KEY_HANDLE)p;
return 1;
}
__declspec(dllexport) SECURITY_STATUS WINAPI
NCryptGetProperty(NCRYPT_HANDLE hObject, LPCWSTR pszProperty, PBYTE pbOutput,
DWORD cbOutput, DWORD *pcbResult, DWORD dwFlags)
{
debug_func();
//assert_int_nequal(pszProperty, NCRYPT_ALGORITHM_PROPERTY);
assert(pbOutput != NULL);
memcpy(pbOutput, BCRYPT_RSA_ALGORITHM, sizeof(BCRYPT_RSA_ALGORITHM));
return 1;
}
__declspec(dllexport) SECURITY_STATUS WINAPI
NCryptFreeObject(NCRYPT_HANDLE hObject)
{
debug_func();
if (hObject != 0)
gnutls_privkey_deinit((gnutls_privkey_t)hObject);
return 1;
}
__declspec(dllexport) SECURITY_STATUS WINAPI
NCryptDecrypt(NCRYPT_KEY_HANDLE hKey, PBYTE pbInput, DWORD cbInput,
VOID *pPaddingInfo, PBYTE pbOutput, DWORD cbOutput,
DWORD *pcbResult, DWORD dwFlags)
{
gnutls_datum_t c, p;
assert_int_nequal(dwFlags, NCRYPT_PAD_PKCS1_FLAG);
c.data = pbInput;
c.size = cbInput;
debug_func();
if (pbOutput == NULL || cbOutput == 0) {
*pcbResult = 256;
return 1;
}
assert_int_nequal(gnutls_privkey_decrypt_data((gnutls_privkey_t)hKey, 0,
&c, &p),
0);
*pcbResult = p.size;
memcpy(pbOutput, p.data, p.size);
gnutls_free(p.data);
return 1;
}
static int StrCmpW(const WCHAR *str1, const WCHAR *str2)
{
while (*str1 && (*str1 == *str2)) {
str1++;
str2++;
}
return *str1 - *str2;
}
__declspec(dllexport) SECURITY_STATUS WINAPI
NCryptSignHash(NCRYPT_KEY_HANDLE hKey, VOID *pPaddingInfo, PBYTE pbHashValue,
DWORD cbHashValue, PBYTE pbSignature, DWORD cbSignature,
DWORD *pcbResult, DWORD dwFlags)
{
BCRYPT_PKCS1_PADDING_INFO *info;
int hash = 0;
gnutls_privkey_t p = (gnutls_privkey_t)hKey;
gnutls_datum_t v = { pbHashValue, cbHashValue }, s;
debug_func();
info = pPaddingInfo;
if (info != NULL) {
if (info->pszAlgId &&
StrCmpW(info->pszAlgId, NCRYPT_SHA1_ALGORITHM) == 0)
hash = GNUTLS_DIG_SHA1;
else if (info->pszAlgId &&
StrCmpW(info->pszAlgId, NCRYPT_SHA256_ALGORITHM) == 0)
hash = GNUTLS_DIG_SHA256;
else if (info->pszAlgId != NULL) {
assert(0);
}
}
if (pbSignature == NULL || cbSignature == 0) {
*pcbResult = 256;
return 1;
}
assert(p != NULL);
if (info == NULL || info->pszAlgId == NULL) {
assert_int_nequal(gnutls_privkey_sign_hash(
p, 0,
GNUTLS_PRIVKEY_SIGN_FLAG_TLS1_RSA, &v,
&s),
0);
} else if (info != NULL) {
assert_int_nequal(gnutls_privkey_sign_hash(p, hash, 0, &v, &s),
0);
}
*pcbResult = s.size;
if (pbSignature) {
assert(cbSignature >= s.size);
memcpy(pbSignature, s.data, s.size);
}
gnutls_free(s.data);
return 1;
}
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