public static string Cyphering(string openMessageBlockDuoSS, string key)
{
int [] blocksAfterInputWhiting = new int [4];
int [] blocksAfterOutputWhiting = new int [4];
List <string> closedMessage = new List <string>();
var subkeysArr = SubkeysGen.SubKeysGeneration(key);
var XDataBlocks = StringMethods.StringToList(openMessageBlockDuoSS, XBlockLength);
for (int i = 0; i < 4; i++)
{
blocksAfterInputWhiting[i] = Convert.ToInt32(XDataBlocks[i], 2) ^ Convert.ToInt32(subkeysArr[i], 2);
}
for (int round = 0; round < 16; round++)
{
blocksAfterInputWhiting = OneRound(blocksAfterInputWhiting, subkeysArr, round);
}
for (int i = 0; i < 4; i++)
{
blocksAfterOutputWhiting[i] = blocksAfterInputWhiting[i] ^ Convert.ToInt32(subkeysArr[i + 36], 2);
closedMessage.Add(StringMethods.MyConvertToString(blocksAfterOutputWhiting[i], 2, 32));
}
var resultStringDuoSS = StringMethods.ListToString(closedMessage);
return(resultStringDuoSS);
}
public static string Decyphering(string closedMessageBlockDuoSS, string key)
{
int[] blocksBeforeInputWhiting = new int[4];
Int32[] blocksBeforeOutputWhiting = new Int32[4];
List <string> openMessage = new List <string>();
var subkeysArr = SubkeysGen.SubKeysGeneration(key);
var XDataBlocks = StringMethods.StringToList(closedMessageBlockDuoSS, XBlockLength);
for (int i = 0; i < 4; i++)
{
blocksBeforeOutputWhiting[i] = Convert.ToInt32(XDataBlocks[i], 2) ^ Convert.ToInt32(subkeysArr[i + 36], 2);
}
for (int round = 15; round > -1; round--)
{
blocksBeforeOutputWhiting = OneRoundReverse(blocksBeforeOutputWhiting, subkeysArr, round);
}
for (int i = 0; i < 4; i++)
{
blocksBeforeInputWhiting[i] = blocksBeforeOutputWhiting[i] ^ Convert.ToInt32(subkeysArr[i], 2);
openMessage.Add(StringMethods.MyConvertToString(blocksBeforeInputWhiting[i], 2, 32));
}
var resultStringDuoSS = StringMethods.ListToString(openMessage);
return(resultStringDuoSS);
}
public static void LogEncrypt(string key, string openMes, string fileWay)
{
StringBuilder strBuild = new StringBuilder();
int[] blocksAfterInputWhiting = new int[4];
int[] blocksAfterOutputWhiting = new int[4];
List <string> closedMessage = new List <string>();
var subkeysArr = SubkeysGen.SubKeysGeneration(key);
strBuild.AppendLine($"Open message block: {openMes};");
strBuild.AppendLine($"Key({key.Length.ToString()}): {key};");
strBuild.AppendLine($"RoundKeys: {subkeysArr[0]};");
for (int i = 1; i < 40; i++)
{
strBuild.AppendLine($" {subkeysArr[i]};");
}
var XDataBlocks = StringMethods.StringToList(openMes, TwofishAlgo.XBlockLength);
strBuild.AppendLine();
strBuild.AppendLine($"**************************Input Whiting**************************");
strBuild.AppendLine();
for (int i = 0; i < 4; i++)
{
blocksAfterInputWhiting[i] = Convert.ToInt32(XDataBlocks[i], 2) ^ Convert.ToInt32(subkeysArr[i], 2);
strBuild.AppendLine($"{XDataBlocks[i]} xor {subkeysArr[i]} = {StringMethods.MyConvertToString(blocksAfterInputWhiting[i], 2, 32)};");
}
strBuild.AppendLine();
strBuild.AppendLine($"**************************The Main Cycle**************************");
File.AppendAllText(fileWay, strBuild.ToString());
for (int round = 0; round < 16; round++)
{
blocksAfterInputWhiting = OneRoundLog(blocksAfterInputWhiting, subkeysArr, round, fileWay);
}
strBuild.AppendLine();
strBuild.AppendLine($"**************************Output Whiting**************************");
strBuild.AppendLine();
for (int i = 0; i < 4; i++)
{
blocksAfterOutputWhiting[i] = blocksAfterInputWhiting[i] ^ Convert.ToInt32(subkeysArr[i + 36], 2);
closedMessage.Add(StringMethods.MyConvertToString(blocksAfterOutputWhiting[i], 2, 32));
strBuild.AppendLine($"{StringMethods.MyConvertToString(blocksAfterInputWhiting[i], 2, 32)} xor {subkeysArr[i+36]} = {StringMethods.MyConvertToString(blocksAfterOutputWhiting[i], 2, 32)};");
}
var resultStringDuoSS = StringMethods.ListToString(closedMessage);
strBuild.AppendLine($"Closed message block: {resultStringDuoSS};");
}
