C++ (Cpp) CRYPTO_PROVIDER Examples

Example #1

File: dbcrypt.cpp Project: Seldom/miranda-ng

int CDbxKyoto::InitCrypt()
{
	CRYPTO_PROVIDER *pProvider;
	bool bMissingKey = false;

	DBVARIANT dbv = { 0 };
	dbv.type = DBVT_BLOB;
	if (GetContactSetting(NULL, "CryptoEngine", "Provider", &dbv)) {
	LBL_CreateProvider:
		CRYPTO_PROVIDER **ppProvs;
		int iNumProvs;
		Crypto_EnumProviders(&iNumProvs, &ppProvs);
		if (iNumProvs == 0)
			return 1;

		pProvider = ppProvs[0];  //!!!!!!!!!!!!!!!!!!

		DBCONTACTWRITESETTING dbcws = { "CryptoEngine", "Provider" };
		dbcws.value.type = DBVT_BLOB;
		dbcws.value.pbVal = (PBYTE)pProvider->pszName;
		dbcws.value.cpbVal = (int)strlen(pProvider->pszName) + 1;
		WriteContactSetting(NULL, &dbcws);
	}
	else {
		if (dbv.type != DBVT_BLOB) { // old version, clean it up
			bMissingKey = true;
			goto LBL_CreateProvider;
		}

		pProvider = Crypto_GetProvider(LPCSTR(dbv.pbVal));
		FreeVariant(&dbv);
		if (pProvider == NULL)
			goto LBL_CreateProvider;
	}

	if ((m_crypto = pProvider->pFactory()) == NULL)
		return 3;

	dbv.type = DBVT_BLOB;
	if (GetContactSetting(NULL, "CryptoEngine", "StoredKey", &dbv)) {
		bMissingKey = true;

	LBL_SetNewKey:
		m_crypto->generateKey(); // unencrypted key
		StoreKey();
	}
	else {
		size_t iKeyLength = m_crypto->getKeyLength();
		if (dbv.cpbVal != (WORD)iKeyLength)
			goto LBL_SetNewKey;

		if (!m_crypto->setKey(dbv.pbVal, iKeyLength))
			if (!EnterPassword(dbv.pbVal, iKeyLength))  // password protected?
				return 4;

		FreeVariant(&dbv);
	}

	if (bMissingKey)
		EnumModuleNames(sttModuleEnum, this);

	dbv.type = DBVT_BYTE;
	if (!GetContactSetting(NULL, "CryptoEngine", "DatabaseEncryption", &dbv))
		m_bEncrypted = dbv.bVal != 0;

	InitDialogs();
	return 0;
}

Example #2

File: dbcrypt.cpp Project: wyrover/miranda-ng

int CDb3Mmap::InitCrypt()
{
	if (m_dbHeader.version == DB_OLD_VERSION)
		return 0;

	CRYPTO_PROVIDER *pProvider;
	bool bMissingKey = false;

	DBVARIANT dbv = { 0 };
	dbv.type = DBVT_BLOB;
	if (GetContactSetting(NULL, "CryptoEngine", "Provider", &dbv)) {
	LBL_CreateProvider:
		CRYPTO_PROVIDER **ppProvs;
		int iNumProvs;
		Crypto_EnumProviders(&iNumProvs, &ppProvs);
		if (iNumProvs == 0)
			return 1;

		if (iNumProvs > 1)
		{
			CSelectCryptoDialog dlg(ppProvs, iNumProvs);
			dlg.DoModal();
			pProvider = dlg.GetSelected();
		}
		else pProvider = ppProvs[0];

		DBCONTACTWRITESETTING dbcws = { "CryptoEngine", "Provider" };
		dbcws.value.type = DBVT_BLOB;
		dbcws.value.pbVal = (PBYTE)pProvider->pszName;
		dbcws.value.cpbVal = (int)mir_strlen(pProvider->pszName) + 1;
		WriteContactSetting(NULL, &dbcws);
	}
	else {
		if (dbv.type != DBVT_BLOB) { // old version, clean it up
			bMissingKey = true;
			goto LBL_CreateProvider;
		}

		pProvider = Crypto_GetProvider(LPCSTR(dbv.pbVal));
		FreeVariant(&dbv);
		if (pProvider == NULL)
			goto LBL_CreateProvider;
	}

	if ((m_crypto = pProvider->pFactory()) == NULL)
		return 3;

	dbv.type = DBVT_BLOB;
	if (GetContactSetting(NULL, "CryptoEngine", "StoredKey", &dbv)) {
		bMissingKey = true;

	LBL_SetNewKey:
		m_crypto->generateKey(); // unencrypted key
		StoreKey();
	}
	else {
		size_t iKeyLength = m_crypto->getKeyLength();
		if (dbv.cpbVal != (WORD)iKeyLength)
			goto LBL_SetNewKey;

		if (!m_crypto->setKey(dbv.pbVal, iKeyLength)) {
			if (memcmp(m_dbHeader.signature, &dbSignatureE, sizeof(m_dbHeader.signature)))
				goto LBL_SetNewKey;

			if (!EnterPassword(dbv.pbVal, iKeyLength)) { // password protected?
				if (m_dbHeader.version >= DB_094_VERSION)
					return 4;

				// one of the early used version of mmap was replaced then by mmap_sa
				// simply remove old badly generated key
				bMissingKey = true;
				goto LBL_SetNewKey;
			}
		}

		FreeVariant(&dbv);
	}

	if (bMissingKey)
		EnumModuleNames(sttModuleEnum, this);

	dbv.type = DBVT_BYTE;
	if (!GetContactSetting(NULL, "CryptoEngine", "DatabaseEncryption", &dbv))
		m_bEncrypted = dbv.bVal != 0;

	InitDialogs();
	return 0;
}