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| using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Вижинер_шифрование
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
richTextBox2.Text = "";
string[] alphabet = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z" };
string input = "", key = "", key_temp = "", input_tolower = "", key_temp_tolower = "";
int mod = 0, number_of_letter;
input_tolower = richTextBox1.Text;
input = input_tolower.ToLower();
key_temp_tolower = textBox1.Text;
key_temp = key_temp_tolower.ToLower();
if (richTextBox1.Text != "" && textBox1.Text != "")
{
mod = input.Length % key_temp.Length;
for (int i = 0; i < (input.Length - mod) / key_temp.Length; i++)
{
key += key_temp;
}
for (int i = 0; i < mod; i++)
{
key += key_temp[i];
}
string[] input_mas = new string[input.Length];
int[] input_index = new int[input.Length];
string[] key_mas = new string[input.Length];
int[] key_index = new int[input.Length];
string[] encrypted_word = new string[input.Length];
for (int i = 0; i < input.Length; i++)
{
input_mas[i] = Convert.ToString(input[i]);
}
for (int i = 0; i < key.Length; i++)
{
key_mas[i] = Convert.ToString(key[i]);
}
for (int i = 0; i < input.Length; i++)
{
for (int j = 0; j < alphabet.Length; j++)
{
if (input_mas[i] == alphabet[j])
{
input_index[i] = j;
}
if (key_mas[i] == alphabet[j])
{
key_index[i] = j;
}
}
}
for (int i = 0; i < input_mas.Length; i++)
{
number_of_letter = (input_index[i] + key_index[i]) % 26;
encrypted_word[i] = alphabet[number_of_letter];
number_of_letter = 0;
}
for (int i = 0; i < input_index.Length; i++)
{
richTextBox2.Text += encrypted_word[i];
}
}
else
{
MessageBox.Show("Вы не ввели значение в одно из обязательных полей");
}
}
private void button2_Click(object sender, EventArgs e)
{
richTextBox2.Text = "";
string[] alphabet = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z" };
string input = "", key = "", key_temp = "", input_tolower = "", key_temp_tolower = "";
int mod = 0, number_of_letter;
input_tolower = richTextBox1.Text;
input = input_tolower.ToLower();
key_temp_tolower = textBox1.Text;
key_temp = key_temp_tolower.ToLower();
if (richTextBox1.Text != "" && textBox1.Text != "")
{
mod = input.Length % key_temp.Length;
for (int i = 0; i < (input.Length - mod) / key_temp.Length; i++)
{
key += key_temp;
}
for (int i = 0; i < mod; i++)
{
key += key_temp[i];
}
string[] input_mas = new string[input.Length];
int[] input_index = new int[input.Length];
string[] key_mas = new string[input.Length];
int[] key_index = new int[input.Length];
string[] encrypted_word = new string[input.Length];
for (int i = 0; i < input.Length; i++)
{
input_mas[i] = Convert.ToString(input[i]);
}
for (int i = 0; i < key.Length; i++)
{
key_mas[i] = Convert.ToString(key[i]);
}
for (int i = 0; i < input.Length; i++)
{
for (int j = 0; j < alphabet.Length; j++)
{
if (input_mas[i] == alphabet[j])
{
input_index[i] = j;
}
if (key_mas[i] == alphabet[j])
{
key_index[i] = j;
}
}
}
for (int i = 0; i < input_mas.Length; i++)
{
number_of_letter = (input_index[i] - key_index[i]+26) % 26;
encrypted_word[i] = alphabet[number_of_letter];
number_of_letter = 0;
}
for (int i = 0; i < input_index.Length; i++)
{
richTextBox2.Text += encrypted_word[i];
}
}
else
{
MessageBox.Show("Вы не ввели значение в одно из обязательных полей");
}
}
private void richTextBox1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar != 8 && (e.KeyChar < 97 || e.KeyChar > 122) && (e.KeyChar < 65 || e.KeyChar > 90))
e.Handled = true;
}
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar != 8 && (e.KeyChar < 97 || e.KeyChar > 122) && (e.KeyChar < 65 || e.KeyChar > 90))
e.Handled = true;
}
private void richTextBox1_TextChanged(object sender, EventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
}
} |
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