static void Main(string[] args)
{
Program.debug = false;
if(args.Length < 3){
Console.WriteLine("You must provide the filepaths for the plaintext and the cipher key.");
Console.ReadLine();
return;
}
if (args.Length == 4)
{
if (args[3] == "debug")
{
Program.debug = true;
}
}
String action = args[0];
String plaintextPath = args[1];
String keyPath = args[2];
byte[,] input = null;
//Read plaintext from file
try{
System.IO.StreamReader plainScan = new System.IO.StreamReader(plaintextPath);
String plaintext = plainScan.ReadLine();
if(plaintext.Length != 32){
throw new Exception("Plaintext block size must be 128 bits");
}
input = new byte[4,4];
int currPos = 0;
//Parse plaintext and put it in the array
for(int j = 0; j < input.GetLength(0); j++){ //J goes on the outside because we fill columns first, then rows
for(int i = 0; i < input.GetLength(0); i++){ //I goes on the inside because we fill columns first, then rows\
String currentVal = plaintext.Substring(currPos, 2);
input[i,j] = Byte.Parse(currentVal, System.Globalization.NumberStyles.HexNumber);
currPos += 2;
}
}
}catch(Exception e){
Console.WriteLine("File reading exception: " + e.Message);
Console.ReadLine();
return;
}
byte[,] key = null;
int keylength = -1;
try{
System.IO.StreamReader keyScan = new System.IO.StreamReader(keyPath);
String keytext = keyScan.ReadLine();
if(keytext.Length == 32){
key = new byte[4,4]; //128 bit key is a 4x4
keylength = 128;
}
else if(keytext.Length == 48){
key = new byte[4,6]; //196 bit key is a 4x6 array
keylength = 192;
}
else if(keytext.Length == 64){
key = new byte[4,8]; //256 bit key is a 4x8 array
keylength = 256;
}
else{
throw new Exception("Invalid key length. Accepted lengths are 128, 192, and 256 bits");
}
//Parse keytext and put it in the array
int currPos = 0;
for(int j = 0; j < key.GetLength(1); j++){ //J goes on the outside because we fill columns first, then rows
for(int i = 0; i < key.GetLength(0); i++){ //I goes on the inside because we fill columns first, then rows
key[i, j] = byte.Parse(keytext.Substring(currPos, 2), System.Globalization.NumberStyles.HexNumber);
currPos += 2;
}
}
}catch(Exception e){
Console.WriteLine("Key reading exception: " + e.Message);
}
Program.printArray(input, "Initial plaintext", true);
Program.printArray(key, "Initial key", true);
if(action == "encrypt"){
//Get the keyschedule from key
KeySchedule ks = new KeySchedule(key);
byte[,] schedule = ks.getSchedule();
Program.printSchedule(schedule, "Generated schedule");
//Create cipher and encrypt data
Cipher cipher = new Cipher(input, schedule, keylength);
byte[,] output = cipher.encrypt();
Program.printArray(output, "Final ciphertext array", true); //DEBUG
//Write out to a file
}
else if(action == "decrypt"){
//Get the keyschedule from the key
KeySchedule ks = new KeySchedule(key);
byte[,] schedule = ks.getSchedule();
//Create inverse cipher and decrypt data
InverseCipher invCipher = new InverseCipher(input, schedule, keylength);
byte[,] output = invCipher.decrypt();
Program.printArray(output, "Final decrypted plaintext", true); //DEBUG
//Write out to a file
}
else{
Console.WriteLine("Unsupported action");
}
Console.ReadLine();
}
static void Main(string[] args)
{
Program.debug = false;
if (args.Length < 3)
{
Console.WriteLine("You must provide the filepaths for the plaintext and the cipher key.");
Console.ReadLine();
return;
}
if (args.Length == 4)
{
if (args[3] == "debug")
{
Program.debug = true;
}
}
String action = args[0];
String plaintextPath = args[1];
String keyPath = args[2];
byte[,] input = null;
//Read plaintext from file
try{
System.IO.StreamReader plainScan = new System.IO.StreamReader(plaintextPath);
String plaintext = plainScan.ReadLine();
if (plaintext.Length != 32)
{
throw new Exception("Plaintext block size must be 128 bits");
}
input = new byte[4, 4];
int currPos = 0;
//Parse plaintext and put it in the array
for (int j = 0; j < input.GetLength(0); j++) //J goes on the outside because we fill columns first, then rows
{
for (int i = 0; i < input.GetLength(0); i++) //I goes on the inside because we fill columns first, then rows\
{
String currentVal = plaintext.Substring(currPos, 2);
input[i, j] = Byte.Parse(currentVal, System.Globalization.NumberStyles.HexNumber);
currPos += 2;
}
}
}catch (Exception e) {
Console.WriteLine("File reading exception: " + e.Message);
Console.ReadLine();
return;
}
byte[,] key = null;
int keylength = -1;
try{
System.IO.StreamReader keyScan = new System.IO.StreamReader(keyPath);
String keytext = keyScan.ReadLine();
if (keytext.Length == 32)
{
key = new byte[4, 4]; //128 bit key is a 4x4
keylength = 128;
}
else if (keytext.Length == 48)
{
key = new byte[4, 6]; //196 bit key is a 4x6 array
keylength = 192;
}
else if (keytext.Length == 64)
{
key = new byte[4, 8]; //256 bit key is a 4x8 array
keylength = 256;
}
else
{
throw new Exception("Invalid key length. Accepted lengths are 128, 192, and 256 bits");
}
//Parse keytext and put it in the array
int currPos = 0;
for (int j = 0; j < key.GetLength(1); j++) //J goes on the outside because we fill columns first, then rows
{
for (int i = 0; i < key.GetLength(0); i++) //I goes on the inside because we fill columns first, then rows
{
key[i, j] = byte.Parse(keytext.Substring(currPos, 2), System.Globalization.NumberStyles.HexNumber);
currPos += 2;
}
}
}catch (Exception e) {
Console.WriteLine("Key reading exception: " + e.Message);
}
Program.printArray(input, "Initial plaintext", true);
Program.printArray(key, "Initial key", true);
if (action == "encrypt")
{
//Get the keyschedule from key
KeySchedule ks = new KeySchedule(key);
byte[,] schedule = ks.getSchedule();
Program.printSchedule(schedule, "Generated schedule");
//Create cipher and encrypt data
Cipher cipher = new Cipher(input, schedule, keylength);
byte[,] output = cipher.encrypt();
Program.printArray(output, "Final ciphertext array", true); //DEBUG
//Write out to a file
}
else if (action == "decrypt")
{
//Get the keyschedule from the key
KeySchedule ks = new KeySchedule(key);
byte[,] schedule = ks.getSchedule();
//Create inverse cipher and decrypt data
InverseCipher invCipher = new InverseCipher(input, schedule, keylength);
byte[,] output = invCipher.decrypt();
Program.printArray(output, "Final decrypted plaintext", true); //DEBUG
//Write out to a file
}
else
{
Console.WriteLine("Unsupported action");
}
Console.ReadLine();
}