public void Encrypt(string filePath, string outputfile)
{
LFSR = new LFSR(_seed, _polynomial);
_inputBytesArray = File.ReadAllBytes(filePath).ToList();
_outputBytesArray = new List <byte>();
#region LocalVariables
int[] inputBitsArray;
int[] outputBitsArray = new int[8];
int LFSROutput;
int decoded;
#endregion
foreach (byte _byte in _inputBytesArray)
{
inputBitsArray = ConvertByteToBitsArray(_byte);
for (int i = 0; i < inputBitsArray.Length; i++)
{
LFSROutput = LFSR.GetNext();
decoded = inputBitsArray[i];
outputBitsArray[i] = LFSROutput == decoded ? 0 : 1;
}
_outputBytesArray.Add(ConvertBitsArrayToByte(outputBitsArray));
}
File.WriteAllBytes(outputfile, _outputBytesArray.ToArray());
}
public string EncryptString(string text)
{
StringBuilder sb = new StringBuilder();
LFSR = new LFSR(_seed, _polynomial);
int actualNumber;
int actualXor;
foreach (var item in text)
{
actualNumber = item == '1' ? 1 : 0;
actualXor = LFSR.GetNext();
sb.Append((actualNumber + actualXor) % 2 == 1 ? "1" : "0");
}
return(sb.ToString());
}
