00001 /* 00002 Copyright 2007 Erez Bibi (erezbibi@users.sourceforge.net) 00003 This file is part of Beesnest. 00004 00005 Beesnest is free software; you can redistribute it and/or modify 00006 it under the terms of the GNU General Public License as published by 00007 the Free Software Foundation; either version 2 of the License, or 00008 (at your option) any later version. 00009 00010 Beesnest is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 GNU General Public License for more details. 00014 00015 You should have received a copy of the GNU General Public License 00016 along with Beesnest; if not, write to the Free Software 00017 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00018 */ 00019 00020 /* DcCrypto.h: interface for the CdcCrypto class. */ 00021 00022 #ifndef CDC_CRYPTO 00023 #define CDC_CRYPTO 00024 00025 #include "../DcGlobals.h" 00026 #include "../DcException.h" 00027 00028 /** 00029 * This static class implements some cryptographic functions I need. 00030 */ 00031 00032 class CdcCrypto 00033 { 00034 private: 00035 00036 /** Handle to the Crypto service provider. */ 00037 static HCRYPTPROV hProv; 00038 00039 public: 00040 00041 /** 00042 * Initialize the class. 00043 */ 00044 static void Init (); 00045 00046 /** 00047 * Destroy the class. 00048 */ 00049 static void Destroy (); 00050 00051 /** 00052 * This function returns a cryptographic secure random string of length 00053 * <b>len</b>. 00054 * <p> 00055 * @param len The length of the required string. 00056 * @return (CdcString) Random string of length <b>len</b>. 00057 * @throw (CdcException) If cannot generate a random string. 00058 */ 00059 static CdcString GetRandomString (int len = 16); 00060 00061 00062 /** 00063 * This function makes a hash string from a buffer. 00064 * <p> 00065 * @param buff String of the buffer to make the hash code from. 00066 * @return (CdcString) The string of the hash result. 00067 * @throw (CdcException) If cannot make the hash. 00068 */ 00069 static CdcString MakeHash (const CdcString& buff); 00070 00071 }; 00072 00073 #endif /* CDC_CRYPTO */
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