/*
* In a loop, it takes the current character of the text and the current character of the key (which loops along the length of the text)
* and adds their values in the polybius square.
*/
public override String Encrypt(String text)
{
StringBuilder sb = new StringBuilder();
int progress = 0;
for (int i = 0; i < text.Length; i++)
{
char currentEncryptionKeyChar = Key.StringValue[progress % Key.StringValue.Length],
currentClearTextChar = text[i];
sb.Append(MyPolybiusSquare.GetValueOf(currentClearTextChar) + MyPolybiusSquare.GetValueOf(currentEncryptionKeyChar));
if (i < text.Length - 1)
{
sb.Append(" ");
}
progress++;
}
return(sb.ToString());
}
public override String Decrypt(String text)
{
StringBuilder sb = new StringBuilder(),
polybiusValues = new StringBuilder();
for (int i = 0; i < text.Length; i++)
{
polybiusValues.Append(MyPolybiusSquare.GetValueOf(text[i]));
}
for (int i = 0; i < polybiusValues.Length / 2; i++)
{
int.TryParse(polybiusValues[i].ToString() + polybiusValues[polybiusValues.Length / 2 + i].ToString(), out int value);
sb.Append(MyPolybiusSquare.GetElementOfValue(value));
}
return(sb.ToString());
}