00001 /******************************************************************************* 00002 * Copyright (C) 2004 Vintela, Inc. All rights reserved. 00003 * Copyright (C) 2005 Novell, Inc. All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions are met: 00007 * 00008 * - Redistributions of source code must retain the above copyright notice, 00009 * this list of conditions and the following disclaimer. 00010 * 00011 * - Redistributions in binary form must reproduce the above copyright notice, 00012 * this list of conditions and the following disclaimer in the documentation 00013 * and/or other materials provided with the distribution. 00014 * 00015 * - Neither the name of Vintela, Inc., Novell, Inc., nor the names of its 00016 * contributors may be used to endorse or promote products derived from this 00017 * software without specific prior written permission. 00018 * 00019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' 00020 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00021 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00022 * ARE DISCLAIMED. IN NO EVENT SHALL Vintela, Inc., Novell, Inc., OR THE 00023 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00024 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00025 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 00026 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 00027 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 00028 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 00029 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00030 *******************************************************************************/ 00031 00037 #ifndef BLOCXX_CRYPTOGRAPHIC_RANDOM_NUMBER_HPP_INCLUDE_GUARD_ 00038 #define BLOCXX_CRYPTOGRAPHIC_RANDOM_NUMBER_HPP_INCLUDE_GUARD_ 00039 #include "blocxx/BLOCXX_config.h" 00040 #include "blocxx/Exception.hpp" 00041 00042 namespace BLOCXX_NAMESPACE 00043 { 00044 00045 BLOCXX_DECLARE_APIEXCEPTION(CryptographicRandomNumber, BLOCXX_COMMON_API); 00046 00047 } // end namespace BLOCXX_NAMESPACE 00048 00049 #if defined(BLOCXX_HAVE_OPENSSL) 00050 #include "blocxx/Types.hpp" 00051 00052 #include <stdlib.h> // for RAND_MAX 00053 00054 namespace BLOCXX_NAMESPACE 00055 { 00056 00061 class BLOCXX_COMMON_API CryptographicRandomNumber 00062 { 00063 public: 00064 00071 CryptographicRandomNumber(Int32 lowVal = 0, Int32 highVal = RAND_MAX); 00072 00079 Int32 getNextNumber(); 00080 00081 public: 00082 00091 static void initRandomness(); 00092 00096 static void saveRandomState(); 00097 00098 private: 00099 Int32 m_lowVal; 00100 Int32 m_highVal; 00101 Int32 m_range; 00102 int m_numBits; 00103 }; 00104 00105 } // end namespace BLOCXX_NAMESPACE 00106 00107 #else 00108 00109 // no openssl, so just typedef the class to RandomNumber 00110 #include "blocxx/RandomNumber.hpp" 00111 00112 namespace BLOCXX_NAMESPACE 00113 { 00114 00115 typedef RandomNumber CryptographicRandomNumber; 00116 00117 } // end namespace BLOCXX_NAMESPACE 00118 00119 #endif // #if defined(BLOCXX_HAVE_OPENSSL) 00120 00121 #endif 00122