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Disk ARchive
2.5.2
Full featured and portable backup and archiving tool
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00001 //*********************************************************************/ 00002 // dar - disk archive - a backup/restoration program 00003 // Copyright (C) 2002-2052 Denis Corbin 00004 // 00005 // This program is free software; you can redistribute it and/or 00006 // modify it under the terms of the GNU General Public License 00007 // as published by the Free Software Foundation; either version 2 00008 // of the License, or (at your option) any later version. 00009 // 00010 // This program 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 this program; if not, write to the Free Software 00017 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00018 // 00019 // to contact the author : http://dar.linux.free.fr/email.html 00020 /*********************************************************************/ 00021 00025 00026 #ifndef CRYPTO_ASYM_HPP 00027 #define CRYPTO_ASYM_HPP 00028 00029 extern "C" 00030 { 00031 #if HAVE_GPGME_H 00032 #include <gpgme.h> 00033 #endif 00034 } 00035 00036 #include "../my_config.h" 00037 #include "generic_file.hpp" 00038 #include "generic_file_overlay_for_gpgme.hpp" 00039 #include "erreurs.hpp" 00040 #include "mem_ui.hpp" 00041 #include "crypto.hpp" 00042 00043 #include <list> 00044 00045 namespace libdar 00046 { 00049 00050 class crypto_asym : public mem_ui 00051 { 00052 public: 00053 00055 crypto_asym(const user_interaction & ui) : mem_ui(ui) { build_context(); has_signatories = false; }; 00056 00058 ~crypto_asym() { release_context(); }; 00059 00061 crypto_asym(const crypto_asym & ref): mem_ui(ref) { throw SRC_BUG; }; 00062 00064 const crypto_asym & operator = (const crypto_asym & ref) { throw SRC_BUG; }; 00065 00067 void set_signatories(const std::vector<std::string> & signatories); 00068 00075 void encrypt(const std::vector<std::string> & recipients_email, generic_file & clear, generic_file & ciphered); 00076 00082 void decrypt(generic_file & ciphered, generic_file & clear); 00083 00086 const std::list<signator> & verify() const { return signing_result; }; 00087 00089 user_interaction & get_ui() const { return mem_ui::get_ui(); }; 00090 00091 private: 00092 bool has_signatories; 00093 std::list<signator> signing_result; 00094 #if GPGME_SUPPORT 00095 gpgme_ctx_t context; //< GPGME context 00096 00097 void release_context() { gpgme_release(context); }; 00098 void build_key_list(const std::vector<std::string> & recipients_email, //< list of email to find a key for 00099 gpgme_key_t * & ciphering_keys, //< resulting nullptr terminated list of keys 00100 bool signatories); //< false if email key need encryption capability, true for signing 00101 void release_key_list(gpgme_key_t * & ciphering_keys); 00102 void fill_signing_result(); 00103 #else 00104 void release_context() {}; 00105 #endif 00106 00107 void build_context(); 00108 }; 00109 00111 00112 } // end of namespace 00113 00114 #endif