private string[] PromptForBytes(string initialMessage)
{
while (true)
{
ForeverHeader.Clear();
Console.WriteLine(initialMessage);
string temp = Console.ReadLine();
if (temp.Length != 32)
{
Console.WriteLine("The key has to be 16 bytes - aka 32 characters symbolising 16 hexadecimal bytes");
Console.WriteLine(PressAnyKey);
Console.ReadKey(true);
continue;
}
string[] tempArray = temp.Chunk(2).Select(x => new string(x.ToArray())).ToArray();
if (tempArray.Any(x => !isHexadecimalByteRepresentation(x)))
{
Console.WriteLine("One/some of the bytes are not in a correct hexadecimal form - eg. \"FF\"");
Console.WriteLine(PressAnyKey);
Console.ReadKey(true);
continue;
}
return(tempArray);
}
}
public Tuple <string[], string[]> InputValues()
{
string[] userDefinedKey = PromptForBytes("Specify the AES key as hex byte representations (Without whitespace):");
string[] userDefinedInputBytes = PromptForBytes("Specify the input bytes as hex representations (Without whitespace):");
ForeverHeader.Clear();
return(new Tuple <string[], string[]>(userDefinedKey, userDefinedInputBytes));
}
private int PromptAndValidateUserForANumber(Action WriteInstructions, Array choiceEnumeration, Func <int, Array, int> enumerationIndexRetrieval)
{
ForeverHeader.Clear();
WriteInstructions();
int selectedCommand = 0;
while (true)
{
ConsoleKeyInfo keyRead = Console.ReadKey(true);
if (!int.TryParse(keyRead.KeyChar.ToString(), out selectedCommand))
{
ForeverHeader.Clear();
WriteInstructions();
Console.WriteLine("You should try pressing a number");
continue;
}
IEnumerable <int> allowedCommands = (choiceEnumeration.Cast <object>()).Select((x, index) => enumerationIndexRetrieval(index, choiceEnumeration));
if (!allowedCommands.Contains(selectedCommand))
{
StringBuilder builder = new StringBuilder();
builder.Append("You can only choose between the numbers ");
foreach (int commandIndex in allowedCommands)
{
builder.Append($"{commandIndex}, ");
}
ForeverHeader.Clear();
WriteInstructions();
Console.WriteLine(builder.ToString());
continue;
}
else
{
break;
}
}
ForeverHeader.Clear();
return(selectedCommand);
}
public void PromptForContinue()
{
Console.WriteLine(PressAnyKey);
Console.ReadKey(true);
ForeverHeader.Clear();
}
