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/*
Miranda NG: the free IM client for Microsoft* Windows*
Copyright (C) 2012-23 Miranda NG team (https://miranda-ng.org)
all portions of this codebase are copyrighted to the people
listed in contributors.txt.
This program 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 2
of the License, or (at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef M_CRYPTO_H__
#define M_CRYPTO_H__ 1
#ifndef M_CORE_H__
#include <m_core.h>
#endif
struct MICryptoEngine
{
uint32_t dwVersion;
STDMETHOD_(void, destroy)(void) PURE;
// get/set the instance key
STDMETHOD_(size_t, getKeyLength)(void) PURE;
STDMETHOD_(bool, getKey)(uint8_t *pKey, size_t cbKeyLen) PURE;
STDMETHOD_(bool, setKey)(const char *pszPassword, const uint8_t *pKey, size_t cbKeyLen) PURE;
STDMETHOD_(bool, generateKey)(void)PURE; // creates a new key inside
STDMETHOD_(void, purgeKey)(void)PURE; // purges a key from memory
// sets the master password (in utf-8)
STDMETHOD_(bool, checkPassword)(const char *pszPassword) PURE;
STDMETHOD_(void, setPassword)(const char *pszPassword) PURE;
// result must be freed using mir_free or assigned to mir_ptr<uint8_t>
STDMETHOD_(uint8_t*, encodeString)(const char *src, size_t *cbResultLen) PURE;
STDMETHOD_(uint8_t*, encodeBuffer)(const void *src, size_t cbLen, size_t *cbResultLen) PURE;
// result must be freed using mir_free or assigned to ptrA/ptrT
STDMETHOD_(char*, decodeString)(const uint8_t *pBuf, size_t bufLen, size_t *cbResultLen) PURE;
STDMETHOD_(void*, decodeBuffer)(const uint8_t *pBuf, size_t bufLen, size_t *cbResultLen) PURE;
};
/////////////////////////////////////////////////////////////////////////////////////////
// registers a crypto provider v0.94+
// wParam = 0
// lParam = (CRYPTO_PROVIDER*)
// returns HANDLE on success or NULL on failure
typedef MICryptoEngine* (MIR_CDECL *pfnCryptoProviderFactory)(void);
#define CPF_UNICODE 1
struct CRYPTO_PROVIDER
{
uint32_t dwSize;
uint32_t dwFlags; // one of CPF_* constants
HPLUGIN pPlugin;
char *pszName; // unique id
MAllStrings szDescr; // description
pfnCryptoProviderFactory pFactory;
};
MIR_APP_DLL(void) Crypto_RegisterEngine(const CRYPTO_PROVIDER *pProvider);
///////////////////////////////////////////////////////////////////////////////////////////////
// retrieves list of all available crypto providers
MIR_APP_DLL(void) Crypto_ListProviders(int *pCount, CRYPTO_PROVIDER ***pList);
///////////////////////////////////////////////////////////////////////////////////////////////
// retrieves a crypto provider by name
MIR_APP_DLL(CRYPTO_PROVIDER*) Crypto_GetProvider(const char *pszName);
#endif // M_CRYPTO_H__
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