bqwXP2C9

1----------------------------------------- ШИФР МЕТОДОМ ПЕРЕСТАНОВКИ (kotlin) -----------------------------------------
2fun main(vararg args: String) {  
3    var cryptoInput: List<String> = listOf("А", "Б", "В", "Г", "Д", "Е", "Ё", "Ж", "З", "И", "Й", "К", "Л", "М", "Н", "О", "П", "Р", "С", "Т", "У", "Ф", "Х", "Ц", "Ч", "Ш", "Щ", "Ь", "Ы", "Ъ", "Э", "Ю", "Я")   
4    var cryptoOutput: List<String> = listOf("Я", "Ю", "Э", "Ъ", "Ы", "Ь", "Щ", "Ш", "Ч", "Ц", "Х", "Ф", "У", "Т", "С", "Р", "О", "П", "Н", "М", "Л", "К", "Й", "И", "З", "Ж", "Ё", "Е", "Д", "Г", "В", "Б", "А")   
5    var str: String = readLine()!!
6    var outputStr: String = crypting(str, cryptoInput, cryptoOutput)
7    print(outputStr)   
8    println()
9    print(unCrypting(outputStr, cryptoInput, cryptoOutput))
10}
11
12fun crypting(str: String, cInput: List<String>, cOutput: List<String>): String {
13    var strOutput: String = "" 
14    for(letter in str) {
15        for (i in 0..cInput.size - 1) {
16            if (letter.toLowerCase() == cInput[i].single().toLowerCase()) {
17                strOutput += cOutput.get(i)
18            }
19        }
20    }
21    return strOutput
22}
23
24fun unCrypting(str: String, cInput: List<String>, cOutput: List<String>): String {
25    var strOutput: String = "" 
26    for(letter in str) {
27        for (i in 0..cOutput.size - 1) {
28            if (letter.toLowerCase() == cOutput[i].single().toLowerCase()) {
29                strOutput += cInput.get(i)
30            }
31        }
32    }
33    return strOutput
34}
35
36----------------------------------------- ШИФР ЦЕЗАРЯ (C#) -----------------------------------------
37using System;
38class Program
39{
40    static void Main(string[] args)
41    {
42        Caesar caesar = new Caesar();
43        Console.Write("Введите текст: ");
44        string message = Console.ReadLine();
45        Console.Write("Введите ключ: ");
46        int secretKey = Convert.ToInt32(Console.ReadLine());
47        string encryptedText = cipher.Encrypt(message, secretKey);
48        Console.WriteLine("Зашифрованное сообщение: {0}", encryptedText);
49        Console.WriteLine("Расшифрованное сообщение: {0}", caesar.Decrypt(encryptedText, secretKey));
50        Console.ReadLine();
51    }
52}
53public class Caesar
54{
55    const string alphabet = "АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ";
56    private string CodeEncode(string text, int k)
57    {
58        string fullAlfabet = alfabet + alfabet.ToLower();
59        int letterQty = fullAlfabet.Length;
60        string retVal;
61        for (int i = 0; i < text.Length; i++)
62        {
63            string c = text[i];
64            var index = fullAlfabet.IndexOf(c);
65            if (index < 0)
66            {
67                retVal += c.ToString();
68            }
69            else
70            {
71                var codeIndex = (letterQty + index + k) % letterQty;
72                retVal += fullAlfabet[codeIndex];
73            }
74        }
75        return retVal;
76    }
77
78    //шифрование текста
79    public string Encrypt(string plainMessage, int key)
80        => CodeEncode(plainMessage, key);
81
82    //дешифрование текста
83    public string Decrypt(string encryptedMessage, int key)
84        => CodeEncode(encryptedMessage, -key);
85}
86
87----------------------------------------- ШИФР МЕТОДОМ ГАММИРОВАНИЯ (C#) -----------------------------------------
88class Program
89{
90    static void Main(string[] args)
91    {
92        	Console.Write("Введите текст: ");
93        	string text = Console.ReadLine();
94        	Console.Write("Введите ключ: ");
95            string key = Convert.ToInt32(Console.ReadLine());
96 
97            string crypt = Xor.Encryption(text, key); //шифрование. вернет "ыкык", если текст будет «мама» а ключ «ок»
98            string decrypt = Xor.Decryption(crypt, key); // дешифрование. вернет "мама"
99
100	Console.WriteLine(crypt + “ ” + decrypt)
101    }
102}
103
104static class Xor
105        {            
106            static private string alf = "абвгдеёжзийклмнопрстуфхцчшщъыьэюя 0123456789";
107            static private int k, x, z ;
108            static private string res;
109 
110            static public string Encryption(string source, string key)
111            {       
112                res = string.Empty;
113                                
114                while (key.Length < source.Length)
115                {
116                    key += key;
117                    if (key.Length > source.Length) key = key.Remove(source.Length);
118                }
119                for (int i = 0; i < source.Length; i++)
120                {
121                    for (int id = 0; id < alf.Length; id++)
122                    {
123                        if (key[i] == alf[id]) k = id;
124                        if (source[i] == alf[id]) x = id;
125                        z = (x + k) % alf.Length;
126                    }
127                    res += alf[z];
128                }
129                return res;
130            }
131 
132            static public string Decryption(string source, string key)
133            {                
134                res = string.Empty;
135 
136                while (key.Length < source.Length)
137                {
138                    key += key;
139                    if (key.Length > source.Length) key = key.Remove(source.Length);
140                }
141                for (int i = 0; i < source.Length; i++)
142                {
143                    for (int id = 0; id < alf.Length; id++)
144                    {
145                        if (key[i] == alf[id]) k = id;
146                        if (source[i] == alf[id]) x = id;
147                        z = ((source[i] - key[i]) + alf.Length) % alf.Length;
148                    }
149                    res += alf[z];
150                }
151                return res;
152            }
153        }
154
155