public static string encryptText(int keylen)
{
key = GetKey(keylen);
var text = TextPreparing.GetCleanText();
for (int i = 0; i < text.Length; i++)
{
int h = key[i % keylen] - 1072;
cypherText += Convert.ToChar(((Convert.ToInt32(text[i]) % 1072 + h) % 32) + 1072);
}
return(cypherText);
}
public static string GetKey(int len)
{
string genKey = "";
var alphabet = TextPreparing.Alphabet();
var rnd = new Random(DateTime.Now.Millisecond);
for (int i = 0; i < len; i++)
{
int ticks = rnd.Next(0, 32);
genKey += alphabet[ticks];
}
return(genKey);
}
public static Dictionary <char, int> countSymbol(string cypheText)
{
var alphabet = TextPreparing.Alphabet();
var monograms = new Dictionary <char, int>();
foreach (var letter in alphabet)
{
monograms.Add(letter, 0);
}
foreach (var letter in cypheText)
{
monograms[letter]++;
}
return(monograms);
}