public override string Decriptare(string textCriptat) { string textClar = ""; for (int i = 0; i < textCriptat.Length; i++) { if (!char.IsLetter(textCriptat[i])) { textClar += textCriptat[i]; } else { char linie = key[i % key.Length]; char original = Util.ShiftLetter(textCriptat[i], -(linie - 'a')); if (Util.IsUpperCase(textCriptat[i])) { textClar += char.ToUpper(original); } else { textClar += original; } } } return(textClar); }
public override string Criptare(string textClar) { string textCriptat = ""; for (int i = 0; i < textClar.Length; i++) { if (!char.IsLetter(textClar[i])) { textCriptat += textClar[i]; } else { char linie = key[i % key.Length]; char coloana = char.ToLower(textClar[i]); if (Util.IsUpperCase(textClar[i])) { textCriptat += char.ToUpper(perm[linie - 'a', coloana - 'a']); } else { textCriptat += perm[linie - 'a', coloana - 'a']; } } } return(textCriptat); }