src/core/linux/rand.cpp

@@ -0,0 +1,34 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Lothar May                                      *
+ *                                                                         *
+ *   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.             *
+ ***************************************************************************/
+#ifdef _WIN32
+#error This source code is not for Win32.
+#endif
+
+#include <openssl/rand.h>
+#include <core/rand.h>
+
+void
+RandomBytes(unsigned char *buf, unsigned size)
+{
+	if(!RAND_bytes(buf, size))
+	{
+		RAND_pseudo_bytes(buf, size); 
+	}
+}
+

src/core/rand.h

@@ -0,0 +1,7 @@
+#ifndef RAND_H
+#define RAND_H
+
+void RandomBytes(unsigned char *buf, unsigned size);
+
+#endif
+

src/core/win32/rand.cpp

@@ -0,0 +1,66 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Lothar May                                      *
+ *                                                                         *
+ *   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 _WIN32
+#error This source code is Win32 only.
+#endif
+
+#include <windows.h>
+#include <wincrypt.h>
+
+#include <boost/thread.hpp>
+#include <core/rand.h>
+
+class CryptData
+{
+public:
+	CryptData()
+	{
+		if (!::CryptAcquireContext(
+			&cryptProvider,
+			NULL,
+			NULL,
+			PROV_RSA_FULL,
+			CRYPT_VERIFYCONTEXT | CRYPT_SILENT))
+		{
+			cryptProvider = 0;
+		}
+	}
+	~CryptData()
+	{
+		if (cryptProvider) CryptReleaseContext(cryptProvider, 0);
+	}
+
+	HCRYPTPROV cryptProvider;
+};
+
+void
+RandomBytes(unsigned char *buf, unsigned size)
+{
+	static boost::thread_specific_ptr<CryptData> m_cryptData;
+
+	if (!m_cryptData.get())
+		m_cryptData.reset(new CryptData);
+
+	HCRYPTPROV provider = m_cryptData.get()->cryptProvider;
+
+	if (provider)
+		::CryptGenRandom(provider, size, buf);
+}
+
+