البرنامج الاول عبارة عن برنامج للتشفير ب otp لكن كيف يمكن ان اخذ المفتاح من الparallport ارجو من خبراء البرمجة مساعدتي في مشروع التخرج بكتابة الاكواد المعدلة
كود:
#include <iostream> //Standard C++ I/O. Used for debugging mainly. Could be done away with.
#include <time.h> //Allows a Cish way to seed the rand() function with the timer
#include <fstream> //Standard file usage.
using namespace std; //Standard Namespace.
typedef char filename[80]; //The path+filenames of the files used
//MACROS
//This is just a nice way to do a XOR operation in code.
#define xor ^
//This allows a specific random range of int values. Another VisC++ copy-paste.
#define getrandom(min, max) \
((rand()%(int)(((max)+1)-(min)))+(min))
//BEGIN MAIN PROGRAM
int main()
{
unsigned char CharSizedChunk; //A char sized chunk of data.
unsigned char keys; //The character that will make up the pad.
//The file names
filename InFileName = ""; //File to be encrypted
filename EncryptName = "encrypted.dat"; //The encrypted file from the InFile
filename PadName = "key.dat"; //The pad of keys to unencrypt the data
fstream InFile, outPad, outEncrypt; //The actual files.
cout << "Please type in the name (and location) of the file you want to encrypt:\n ";
cin >> InFileName;
try
{
//The file to encrypt
InFile.open(InFileName,ios::in | ios::binary); //Input from the file to encrypt
if(!InFile) //Throws a Abort, Retry, Ignore error for the OS to take over
throw cerr << "The File \"" << InFileName << '\"' << " Did Not Open!!!\n\n"; //Ends in error.
//Pad info
outPad.open(PadName,ios::out | ios::binary); //Output to the pad file
if(!outPad) //Throws a Abort, Retry, Ignore error for the OS to take over
throw cerr << "The File \"" << PadName << '\"' << " Did Not Open!!!\n\n"; //Ends in error.
//The encrypted file
outEncrypt.open(EncryptName,ios::out | ios::binary); //Output to an encypted version of the input file
if(!outEncrypt) //Throws a Abort, Retry, Ignore error for the OS to take over
throw cerr << "The File \"" << EncryptName << '\"' << " Did Not Open!!!\n\n"; //Ends in error.
}
catch( ... ) //Arbitrary net
{
return (system("pause"));
}
InFile.seekg(0); //Sets the filepointer to the begining of the file
//The Encryption stuff
cout << "\n\n~Encrypting the Bytes~\n\n"; //An unnecessary title
srand( (unsigned)time( NULL ) ); //Radomize using the computer's system timer as a seed value
//Reads byte sized (ie ASCII character) chunks. Literally reads the input file one char at a time.
while( InFile.read((char *) & CharSizedChunk, sizeof (unsigned char)) )
{
//cout << CharSizedChunk; //More debugging output
keys = unsigned char(getrandom(32,126)); //Makes the so called "pad."
CharSizedChunk = CharSizedChunk ^ keys; //XOR's the char with the randomly generated key.
//cout << CharSizedChunk; //ECHOs the encrytion onto the screen; again debug usage
outPad.write((char *) & keys, sizeof (unsigned char)); //Writes a char to the pad file
outEncrypt.write((char *) & CharSizedChunk, sizeof (unsigned char)); //Writes a char to the encrypted file
}
//Closes the files out.
outPad.close();outPad.clear();
outEncrypt.close();outEncrypt.clear();
InFile.close();InFile.clear();
cout << "\n\nSome Helpful Hints ...\n"
<< "*Only use the pad generated once.\n"
<< "*Make sure you means of delivering the pad are secure!\n"
<< "*When you run the Unencryption Software ... all you need is the \"xxx.dat"
<< "\"\n and \"pad.dat\" to generate an \"out.dat\" file which is your Unencrypted file.\n\n";
return (system("pause")); //return 0;
}
//END MAIN PROGRAM
البرنامج الثاني عبارة عن برنامج فك للتشفير ب otp لكن كيف يمكن ان اخذ المفتاح من الparallport ارجو من خبراء البرمجة مساعدتي
كود:
#include <iostream> //Standard C++ I/O. Used for debugging.
#include <time.h> //Allows a Cish way to seed the rand() function with the timer
#include <fstream> //Standard file usage.
using namespace std; //Standard Namespace.
typedef char filename[80]; //The path+filenames of the files used
//MACROS
//This is just a nice way to do a XOR operation in code.
#define xor ^
//BEGIN MAIN PROGRAM
int main()
{
unsigned char CharSizedChunk; //A char sized chunk of data.
unsigned char keys; //The character that will make up the pad.
//The file names
filename OutFileName = "Decrypted.dat"; //File made from the encrypted file
filename EncryptName = "Encrypted.dat"; //The encrypted file from the InFile
filename PadName = "key.dat"; //The pad of keys to unencrypt the data
fstream inPad, inEncrypt, outDecrypt; //The actural file instances
try
{
//Opens the One Time Pad file for input
inPad.open(PadName,ios::in | ios::binary); //Input from the pad file
if(!inPad) //Throws a Abort, Retry, Ignore error for the OS to take over
throw cerr << "The File \"" << PadName << '\"' << " Did Not Open!!!\n\n";//Ends in error.
//Opens the Encrypted file for input
inEncrypt.open(EncryptName,ios::in | ios::binary);//Input from the encrypted file
if(!inEncrypt) //Throws a Abort, Retry, Ignore error for the OS to take over
throw cerr << "The File \"" << EncryptName << '\"' << " Did Not Open!!!\n\n";//Ends in error.
outDecrypt.open(OutFileName,ios::out | ios::binary);//The output file, decrypted
if(!outDecrypt) //Throws a Abort, Retry, Ignore error for the OS to take over
throw cerr << "The File \"" << OutFileName << '\"' << " Did Not Open!!!\n\n";//Ends in error.
}
catch( ... )
{
return (system("pause")); //return 0;
}
inEncrypt.seekg(0); //Sets the filepointer to the begining of the file
inPad.seekg(0); //Sets the filepointer to the begining of the file
//The Unencryption Half
cout << "\n\n~Unencrypting the Bytes~\n\n"; //Another debugging title
//Goes through the encrypted file, and the pad one char at a time.
while(inEncrypt.read((char *) & CharSizedChunk, sizeof(unsigned char)) )
{
//Reads the encryption
inPad.read((char *) & keys, sizeof(unsigned char));
//Unencrypts
CharSizedChunk = CharSizedChunk ^ keys;
//Final string writting
// Kills the extra carrage returns ... an unusual symptom. No doubt Visual C++.
if( (int(CharSizedChunk) != 13) ) //Text editors fill in carrage returns at line feeds anyways
{
//cout << CharSizedChunk << ' '; //ECHOs the decrytion onto the screen
outDecrypt.write((char *) & CharSizedChunk, sizeof(unsigned char));
}
}
//Makes sure everything is closed out.
inPad.close();inPad.clear();
inEncrypt.close();inEncrypt.clear();
outDecrypt.close();outDecrypt.clear();
cout << "\n\n";
return (system("pause")); //return 0;
}
//END MAIN PROGRAM
مطلوب مساعدة عاجلة من مبرمجين بلغة فيجوال سي++
