private void HillClimbingAnalysis()
{
if (settings.Iterations < 2 || settings.KeySize < 2)
{
GuiLogMessage("Check keylength and iterations", NotificationLevel.Error);
return;
}
DateTime startTime = DateTime.Now;
DateTime nextUpdate = DateTime.Now.AddMilliseconds(100);
HighscoreList ROUNDLIST = new HighscoreList(comparer, 10);
ValueKey vk = new ValueKey();
ulong totalKeys = (ulong)settings.Repeatings * (ulong)settings.Iterations;
ulong doneKeys = 0;
stop = false;
for (int repeating = 0; repeating < settings.Repeatings; repeating++)
{
if (stop)
{
break;
}
ROUNDLIST.Clear();
byte[] key = randomArray(settings.KeySize);
byte[] oldkey = new byte[settings.KeySize];
for (int iteration = 0; iteration < settings.Iterations; iteration++)
{
if (stop)
{
break;
}
Array.Copy(key, oldkey, key.Length);
int r = rd.Next(100);
if (r < 50)
{
for (int i = 0; i < rd.Next(10); i++)
{
swap(key, rd.Next(key.Length), rd.Next(key.Length));
}
}
else if (r < 70)
{
for (int i = 0; i < rd.Next(3); i++)
{
int l = rd.Next(key.Length - 1) + 1;
int f = rd.Next(key.Length);
int t = (f + l + rd.Next(key.Length - l)) % key.Length;
blockswap(key, f, t, l);
}
}
else if (r < 90)
{
int l = 1 + rd.Next(key.Length - 1);
int f = rd.Next(key.Length);
int t = (f + 1 + rd.Next(key.Length - 1)) % key.Length;
blockshift(key, f, t, l);
}
else
{
pivot(key, rd.Next(key.Length - 1) + 1);
}
decrypt(vk, key);
if (ROUNDLIST.Add(vk))
{
if (TOPLIST.isBetter(vk))
{
TOPLIST.Add(vk);
Output = vk.plaintext;
}
}
else
{
Array.Copy(oldkey, key, key.Length);
}
doneKeys++;
if (DateTime.Now >= nextUpdate)
{
TOPLIST.Merge(ROUNDLIST);
UpdatePresentationList(totalKeys, doneKeys, startTime);
nextUpdate = DateTime.Now.AddMilliseconds(1000);
}
}
}
TOPLIST.Merge(ROUNDLIST);
UpdatePresentationList(totalKeys, doneKeys, startTime);
}
private void BruteforceAnalysis()
{
int[] set = getBruteforceSettings();
if (set == null)
{
GuiLogMessage("Specify the type of transposition to examine.", NotificationLevel.Error);
return;
}
if (settings.MaxLength < 2 || settings.MaxLength > 20)
{
GuiLogMessage("Check transposition bruteforce length. Min length is 2, max length is 20!", NotificationLevel.Error);
return;
}
ValueKey vk = new ValueKey();
//Just for fractional-calculation:
PermutationGenerator per = new PermutationGenerator(2);
DateTime startTime = DateTime.Now;
DateTime nextUpdate = DateTime.Now.AddMilliseconds(100);
ulong totalKeys = 0;
for (int i = 1; i <= settings.MaxLength; i++)
{
totalKeys += (ulong)per.getFactorial(i);
}
totalKeys *= (ulong)set.Length;
ulong doneKeys = 0;
stop = false;
for (int keylength = 1; keylength <= settings.MaxLength; keylength++)
{
if (stop)
{
break;
}
// for every selected bruteforce mode:
for (int s = 0; s < set.Length; s++)
{
if (stop)
{
break;
}
switch (set[s])
{
case (0):
controlMaster.changeSettings("ReadIn", ReadInMode.byColumn);
controlMaster.changeSettings("Permute", PermutationMode.byColumn);
controlMaster.changeSettings("ReadOut", ReadOutMode.byColumn);
break;
case (1):
controlMaster.changeSettings("ReadIn", ReadInMode.byColumn);
controlMaster.changeSettings("Permute", PermutationMode.byColumn);
controlMaster.changeSettings("ReadOut", ReadOutMode.byRow);
break;
case (2):
controlMaster.changeSettings("ReadIn", ReadInMode.byRow);
controlMaster.changeSettings("Permute", PermutationMode.byColumn);
controlMaster.changeSettings("ReadOut", ReadOutMode.byColumn);
break;
case (3):
controlMaster.changeSettings("ReadIn", ReadInMode.byRow);
controlMaster.changeSettings("Permute", PermutationMode.byColumn);
controlMaster.changeSettings("ReadOut", ReadOutMode.byRow);
break;
}
byte[] key = new byte[keylength];
per = new PermutationGenerator(keylength);
while (per.hasMore() && !stop)
{
int[] keyInt = per.getNext();
for (int i = 0; i < key.Length; i++)
{
key[i] = Convert.ToByte(keyInt[i]);
}
decrypt(vk, key);
if (TOPLIST.isBetter(vk))
{
Output = vk.plaintext;
}
TOPLIST.Add(vk);
doneKeys++;
if (DateTime.Now >= nextUpdate)
{
UpdatePresentationList(totalKeys, doneKeys, startTime);
nextUpdate = DateTime.Now.AddMilliseconds(1000);
}
}
}
}
UpdatePresentationList(totalKeys, doneKeys, startTime);
}
private void GeneticAnalysis()
{
if (settings.Iterations < 2 || settings.KeySize < 2 || settings.Repeatings < 1)
{
GuiLogMessage("Check keylength and iterations", NotificationLevel.Error);
return;
}
ValueKey vk = new ValueKey();
DateTime startTime = DateTime.Now;
DateTime nextUpdate = DateTime.Now.AddMilliseconds(100);
HighscoreList ROUNDLIST = new HighscoreList(comparer, 12);
ulong totalKeys = (ulong)settings.Repeatings * (ulong)settings.Iterations * 6;
ulong doneKeys = 0;
stop = false;
for (int repeating = 0; repeating < settings.Repeatings; repeating++)
{
if (stop)
{
break;
}
ROUNDLIST.Clear();
for (int i = 0; i < ROUNDLIST.Capacity; i++)
{
ROUNDLIST.Add(createKey(randomArray(settings.KeySize)));
}
for (int iteration = 0; iteration < settings.Iterations; iteration++)
{
if (stop)
{
break;
}
// Kinder der besten Keys erstellen
int rndInt = 0;
for (int a = 0; a < 6; a++)
{
if (a % 2 == 0)
{
rndInt = rd.Next(settings.KeySize - 1) + 1;
}
// combine DNA of two parents
ValueKey parent1 = ROUNDLIST[a];
ValueKey parent2 = ROUNDLIST[(a % 2 == 0) ? a + 1 : a - 1];
byte[] child = new byte[parent1.key.Length];
Array.Copy(parent1.key, child, rndInt);
int pos = rndInt;
for (int b = 0; b < parent2.key.Length; b++)
{
for (int c = rndInt; c < parent1.key.Length; c++)
{
if (parent1.key[c] == parent2.key[b])
{
child[pos] = parent1.key[c];
pos++;
break;
}
}
}
// add a single mutation
int apos = rd.Next(settings.KeySize);
int bpos = (apos + rd.Next(1, settings.KeySize)) % settings.KeySize;
swap(child, apos, bpos);
decrypt(vk, child);
ROUNDLIST.Add(vk);
if (TOPLIST.isBetter(vk))
{
TOPLIST.Add(vk);
Output = vk.plaintext;
}
doneKeys++;
}
if (DateTime.Now >= nextUpdate)
{
TOPLIST.Merge(ROUNDLIST);
UpdatePresentationList(totalKeys, doneKeys, startTime);
nextUpdate = DateTime.Now.AddMilliseconds(1000);
}
}
}
TOPLIST.Merge(ROUNDLIST);
UpdatePresentationList(totalKeys, doneKeys, startTime);
}
