monde
73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
#include <iostream>
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#include <ios>
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#include <string>
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#include "Decryption.h"
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#include "GenerateKeys.h"
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Decryption::Decryption()
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{
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}
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Decryption::Decryption(const std::string& message)
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{
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this->message = message;
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}
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void Decryption::setDecryptedMessage(const std::string& message)
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{
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this->decryptedMessage = message;
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}
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void Decryption::decryptMessage()
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{
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GenerateKeys gk;
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ioEvent.open("encryptedFile.txt", std::ios::in);
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std::string messageToBeDecrypted, decryptedMessage;
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while(!ioEvent.eof())
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{
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ioEvent >> messageToBeDecrypted;
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}
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ioEvent.close();
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unsigned short encryptedTwoKey = 2;
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unsigned short beginningOfAlphabetLowerCase = 97;
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unsigned short endingOfAplphabetLowerCase = 122;
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unsigned short whiteSpaceASCIICode = 32;
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for (unsigned short index = 0; index < messageToBeDecrypted.size(); index++)
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{
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if ((index + encryptedTwoKey) < messageToBeDecrypted.size())
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{
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char otherElements[] = {messageToBeDecrypted.at(index), messageToBeDecrypted.at(index + 1), messageToBeDecrypted.at(index + 2)};
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unsigned short number = atoi(otherElements);
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if ((number > endingOfAplphabetLowerCase || number < beginningOfAlphabetLowerCase) && (number != whiteSpaceASCIICode))
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{
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otherElements[0] = {messageToBeDecrypted.at(index)};
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otherElements[1] = {messageToBeDecrypted.at(index + 1)};
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otherElements[2] = {' '};
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number = atoi(otherElements);
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decryptedMessage += gk.decryptedCharacters[number];
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index += 1;
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}
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else
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{
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decryptedMessage += gk.decryptedCharacters[number];
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index += 2;
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}
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}
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}
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setDecryptedMessage(decryptedMessage);
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}
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std::string Decryption::getDecryptedMessage() const
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{
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return decryptedMessage;
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}
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