Compiling and Integrating Crypto++ into the Microsoft Visual C++
Step 1- Download the latest Crypto++ library from the link http://www.cryptopp.com/#download. And unzip the file in a folder.
Step 2- Go to the extracted folder and open the cryptest Solution file with visual studio.(see the picture below)
Step 3- You will find four projects in the solution file shown in the picture.
Step 4- Go to Build tab in the ManuBar and select Batch Build.
Step 5- In the batch build Select the option Selected in the picture and then Build the Solution .
This will generate the Two folders in the Win32 ->Output Folders .One ‘Debug’ and named ‘Release’.
The ‘Debug ’ folder contains the following files
And The ‘Release’ folder contains the following files
Step 6- Now Make A new visual C++ win32 project and Name it According to your self
Then go to the Project properties by right clicking your project. (See the picture)
Now go to the Linker and the Select the Input and in the Additional Dependency Enter the cryptlib.lib path as shown in the picture. If you are compiling the project in ‘Release’ mode the n select the cryptlib.lib file in your Release Folder and if you are compiling the project in ‘Debug’ mode the n select the cryptlib.lib file from your Debug Folder.
Then Enter the Sample Code shown Below
#include"stdafx.h"
// g++ -g3 -ggdb -O0 -DDEBUG -I/usr/include/cryptopp Driver.cpp -o Driver.exe -lcryptopp -lpthread
// g++ -g -O2 -DNDEBUG -I/usr/include/cryptopp Driver.cpp -o Driver.exe -lcryptopp -lpthread
#include<cstdio>
#include<iostream>
#include<osrng.h>
usingCryptoPP::AutoSeededRandomPool;
#include<iostream>
usingstd::cout;
usingstd::cerr;
usingstd::endl;
#include<string>
usingstd::string;
#include<cstdlib>
usingstd::exit;
#include<cryptlib.h>
usingCryptoPP::Exception;
#include<hex.h>
usingCryptoPP::HexEncoder;
usingCryptoPP::HexDecoder;
#include<filters.h>
usingCryptoPP::StringSink;
usingCryptoPP::StringSource;
usingCryptoPP::StreamTransformationFilter;
#include<des.h>
usingCryptoPP::DES_EDE2;
#include<modes.h>
usingCryptoPP::CBC_Mode;
#include<secblock.h>
usingCryptoPP::SecByteBlock;
#include<iostream>
#include<string>
#include<modes.h>
#include<aes.h>
#include<filters.h>
/*
CryptoPP::SecByteBlock HexDecodeString(const char *hex)
{
CryptoPP::StringSource ss(hex, true, new CryptoPP::HexDecoder);
CryptoPP::SecByteBlock result((size_t)ss.MaxRetrievable());
ss.Get(result, result.size());
return result;
}*/
intmain(intargc, char* argv[]) {
//HMODULE DLL = LoadLibrary(_T("cryptopp.dll"));
//
// Key and IV setup
//AES encryption uses a secret key of a variable length (128-bit, 196-bit or 256-
//bit). This key is secretly exchanged between two parties before communication
//begins. DEFAULT_KEYLENGTH= 16 bytes
std::stringkey = "0123456789abcdef";
std::stringiv = "aaaaaaaaaaaaaaaa";
stringplain = "CBC Mode Test";
stringcipher, encoded, recovered;
std::stringplaintext = "name macmilan age 24 ciy bonn country germany";
std::stringciphertext;
std::stringdecryptedtext;
std::cout << "Plain Text ("<< plaintext.size() << " bytes)"<< std::endl;
std::cout << plaintext;
std::cout << std::endl << std::endl;
CryptoPP::AES::EncryptionaesEncryption((byte*)key.c_str(), CryptoPP::AES::DEFAULT_KEYLENGTH);
CryptoPP::CBC_Mode_ExternalCipher::EncryptioncbcEncryption( aesEncryption, (byte*)iv.c_str() );
CryptoPP::StreamTransformationFilterstfEncryptor(cbcEncryption, newCryptoPP::StringSink( ciphertext ) );
stfEncryptor.Put( reinterpret_cast<constunsignedchar*>( plaintext.c_str() ), plaintext.length() + 1 );
stfEncryptor.MessageEnd();
cout << "cipher text plain: "<< ciphertext << endl;
std::cout << "Cipher Text ("<< ciphertext.size() << " bytes)"<< std::endl;
cout << endl;
cout << endl;
std::cout <<"cipher text In HEX FORM:: ";
for( inti = 0; i < ciphertext.size(); i++ ) {
std::cout << "0x"<< std::hex << (0xFF & static_cast<byte>(ciphertext[i])) << " ";
}
cout << endl;
cout << endl;
/*********************************\
\*********************************/
// Pretty print
encoded.clear();
StringSource(ciphertext, true,
newHexEncoder(
newStringSink(encoded)
) // HexEncoder
); // StringSource
cout << "cipher text In HEX FORM (Modified):: "<< encoded << endl;
cout << endl;
cout << endl;
char*name2;
name2 = (char*) malloc(encoded.length() + 1); // don't forget to free!!!!
//s2 = Database_row_count; // I forget if the string class can implicitly be converted to char*
//s2[0] = '1';
strcpy(name2, encoded.c_str());
constchar* hex_str = name2;
std::stringresult_string ;
unsignedintch ;
for( ; std::sscanf( hex_str, "%2x", &ch ) == 1 ; hex_str += 2 )
result_string += ch ;
cout << "HEX FORM to cipher text :: ";
std::cout << result_string << '\n';
cout << endl;
cout << endl;
/*********************************\
\*********************************/
CryptoPP::AES::DecryptionaesDecryption((byte*)key.c_str(), CryptoPP::AES::DEFAULT_KEYLENGTH);
CryptoPP::CBC_Mode_ExternalCipher::DecryptioncbcDecryption( aesDecryption, (byte*)iv.c_str() );
CryptoPP::StreamTransformationFilterstfDecryptor(cbcDecryption, newCryptoPP::StringSink( decryptedtext ) );
stfDecryptor.Put( reinterpret_cast<constunsignedchar*>( result_string.c_str() ), result_string.size() );
stfDecryptor.MessageEnd();
std::cout << "Decrypted Text: "<< std::endl;
std::cout << decryptedtext;
std::cout << std::endl << std::endl;
system("pause");
return0;
}
Step 7 – IF you the compiling your code in Debug Mode make sure in the Project-> properties->C/C++-> Code Generation ->Runtime Library the option ‘Multi-threaded Debug (/MTd)’is selected
IF you the compiling your code in Release Mode make sure in the Project-> properties->C/C++-> Code Generation ->Runtime Library the option ‘Multi-threaded DLL (/MD)’is selected
Now compile the program And Run it.
That’s it.
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