create a decrypt c++ poco program for encrypt

1.i have a c++ poco program that encrypts some text with a cipher, i need the reverse, get the result encrypted text, and the cipher and convert it to the text that was encrypted. [login to view URL] the same amount of software (c++/poco) if possible. = = = = = = = = = = = = = #include "Poco/HMACEngine.h" #include "Poco/SHA1Engine.h" #include <iostream> using Poco::DigestEngine; using Poco::HMACEngine; using Poco::SHA1Engine; int main(int argc, char** argv) { std::string message1("This is a top-secret message."); std::string message2("Don't tell anyone!"); std::string passphrase("s3cr3t"); // HMAC needs a passphrase HMACEngine<SHA1Engine> hmac(passphrase); // we'll compute a HMAC-SHA1 [login to view URL](message1); [login to view URL](message2); const DigestEngine::Digest& digest = [login to view URL](); // finish HMAC computation and obtain digest std::string digestString(DigestEngine::digestToHex(digest)); // convert to a string of hexadecimal numbers std::cout << digestString << std::endl; return 0; }