1 files changed, 55 insertions, 0 deletions
diff --git a/plugins/Kuzne4ikCrypt/src/utils.cpp b/plugins/Kuzne4ikCrypt/src/utils.cpp
new file mode 100644
index 0000000000..a669540320
--- /dev/null
+++ b/plugins/Kuzne4ikCrypt/src/utils.cpp
@@ -0,0 +1,55 @@
+/*
+
+Miranda NG: the free IM client for Microsoft* Windows*
+
+Copyright (C) 2012-16 Miranda NG project,
+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.
+*/
+
+#include "stdafx.h"
+
+bool getRandomBytes(BYTE *buf, size_t bufLen)
+{
+	// try to use Intel hardware randomizer first
+	HCRYPTPROV hProvider = NULL;
+	if (::CryptAcquireContext(&hProvider, NULL, _T("Intel Hardware Cryptographic Service Provider"), PROV_INTEL_SEC, 0) ||
+		 ::CryptAcquireContext(&hProvider, NULL, MS_STRONG_PROV, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT) ||
+		 ::CryptAcquireContext(&hProvider, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
+	{
+		::CryptGenRandom(hProvider, DWORD(bufLen), buf);
+		::CryptReleaseContext(hProvider, 0);
+	}
+	// no luck? try to use Windows NT RTL
+	else {
+		typedef BOOL(WINAPI *pfnGetRandom)(PVOID RandomBuffer, ULONG RandomBufferLength);
+		pfnGetRandom fnGetRandom = (pfnGetRandom)GetProcAddress(GetModuleHandleA("advapi32.dll"), "SystemFunction036");
+		if (fnGetRandom == NULL)
+			return false;
+
+		fnGetRandom(buf, DWORD(bufLen));
+	}
+	return true;
+}
+
+void slow_hash(const void *buf, size_t bufLen, BYTE* tmpHash)
+{
+	mir_sha256_hash(buf, bufLen, tmpHash);
+
+	for (int i = 0; i < 50000; i++)
+		mir_sha256_hash(tmpHash, 32, tmpHash);
+}