/* * (C) 2002 Jack Lloyd * * Distributed under the terms of the Botan license */ /* An Botan example application showing how to use the pop and prepend functions of Pipe. Based on the md5 example. It's output should always be identical to such. */ #include #include #include int main(int argc, char* argv[]) { if(argc < 2) { std::cout << "Usage: " << argv[0] << " " << std::endl; return 1; } Botan::LibraryInitializer init; // this is a pretty vacuous example, but it's useful as a test Botan::Pipe pipe; // CPS == Current Pipe Status, ie what Filters are set up pipe.prepend(new Botan::Hash_Filter("MD5")); // CPS: MD5 pipe.prepend(new Botan::Hash_Filter("RIPEMD-160")); // CPS: RIPEMD-160 | MD5 pipe.prepend(new Botan::Chain( new Botan::Hash_Filter("RIPEMD-160"), new Botan::Hash_Filter("RIPEMD-160"))); // CPS: (RIPEMD-160 | RIPEMD-160) | RIPEMD-160 | MD5 pipe.pop(); // will pop everything inside the Chain as well as Chain itself // CPS: RIPEMD-160 | MD5 pipe.pop(); // will get rid of the RIPEMD-160 Hash_Filter // CPS: MD5 pipe.prepend(new Botan::Hash_Filter("SHA-1")); // CPS: SHA-1 | MD5 pipe.append(new Botan::Hex_Encoder); // CPS: SHA-1 | MD5 | Hex_Encoder pipe.prepend(new Botan::Hash_Filter("SHA-1")); // CPS: SHA-1 | SHA-1 | MD5 | Hex_Encoder pipe.pop(); // Get rid of the Hash_Filter(SHA-1) pipe.pop(); // Get rid of the other Hash_Filter(SHA-1) // CPS: MD5 | Hex_Encoder // The Hex_Encoder is safe because it is at the end of the Pipe, // and pop() pulls off the Filter that is at the start. pipe.prepend(new Botan::Hash_Filter("RIPEMD-160")); // CPS: RIPEMD-160 | MD5 | Hex_Encoder pipe.pop(); // Get rid of that last prepended Hash_Filter(RIPEMD-160) // CPS: MD5 | Hex_Encoder int skipped = 0; for(int j = 1; argv[j] != 0; j++) { std::ifstream file(argv[j]); if(!file) { std::cout << "ERROR: could not open " << argv[j] << std::endl; skipped++; continue; } pipe.start_msg(); file >> pipe; pipe.end_msg(); file.close(); pipe.set_default_msg(j-1-skipped); std::cout << pipe << " " << argv[j] << std::endl; } return 0; }