Cifrado del alfabeto latino

La técnica de cifrado de cifrado del alfabeto latino es una de las técnicas más antiguas y sencillas de cifrado de datos. Es simplemente un tipo de técnica de cifrado por sustitución, es decir, cada letra de un texto dado se sustituye por su número correspondiente representado en su orden alfabético. Por ejemplo, hemos dado una string como «hola a todos», entonces su cifrado de cifrado latino será «8 5 12 12 15 5 22 5 18 25 15 14 5».

// Latin Alphabet Cipher Encryption header files
#include <bits/stdc++.h>
  
// function for calculating the encryption
void cipher(char str[])
{
    for (int i = 0; str[i] != '\0'; i++) {
        if (isalpha(str[i]) == 0 && str[i] != ' ') {
            printf("Enter only alphabets and space\n");
            return;
        }
    }
  
    printf("Encrypted Code using Latin Alphabet\n");
    for (int i = 0; str[i] != '\0'; i++) {
  
        if (str[i] >= 'A' && str[i] <= 'Z')
            printf("%d ", str[i] - 'A' + 1);
  
        else if (str[i] >= 'a' && str[i] <= 'z')
            printf("%d ", str[i] - 'a' + 1);
        if (str[i] == ' ')
            printf("%c", str[i]);
    }
    printf("\n");
}
  
// driver code
int main()
{
    char str[] = "geeksforgeeks";
    cipher(str);
    return 0;
}

// Java program to demonstrate 
// Latin Alphabet Cipher
  
class LatinCipher 
{
    // function for calculating the encryption
    static void cipher(String str)
    {
        for (int i = 0; i < str.length(); i++)
        {
            if (!Character.isLetter(str.charAt(i)) &&
            str.charAt(i) != ' ') 
            {
                System.out.println("Enter only alphabets and space");
                return;
            }
        }
  
        System.out.println("Encrypted Code using Latin Alphabet");
        for (int i = 0; i < str.length(); i++)
        {
            if (str.charAt(i) >= 'A' && str.charAt(i) <= 'Z')
            {
                System.out.print(str.charAt(i) - 'A' + 1 + " ");
            }
            else if (str.charAt(i) >= 'a' && str.charAt(i) <= 'z') 
            {
                System.out.print(str.charAt(i) - 'a' + 1 + " ");
            }
            if (str.charAt(i) == ' ')
                System.out.print(str.charAt(i));
  
        }
        System.out.println();
    }
  
    // Driver Code
    public static void main(String[] args)
    {
        String str = "geeksforgeeks";
        cipher(str);
    }
}
  
// This code is contributed by Vivekkumar Singh

# Python program to demonstrate 
# Latin Alphabet Cipher
  
# function for calculating the encryption
def cipher(str):
  
    for i in range(len(str)):
        if str[i].isalpha() == 0 and str[i] != " ":
            print("Enter only alphabets and space")
            return
  
  
    print("Encrypted Code using Latin Alphabet")
    for i in range(len(str)):
  
        if str[i] >= "A" and str[i] <= "Z":
            print(ord(str[i])-ord("A")+1, end=" ")
          
        elif str[i] >= "a" and str[i] <= 'z':
            print(ord(str[i])-ord("a")+1, end=" ")
          
        if str[i] == " ":
            print(str[i])
      
    print()
  
  
# Driver Code
if __name__ == "__main__":
    str = "geeksforgeeks"
    cipher(str)
  
# This code is contributed by 
# sanjeev2552

// C# program to demonstrate 
// Latin Alphabet Cipher
using System;
      
public class LatinCipher 
{
    // function for calculating the encryption
    static void cipher(String str)
    {
        for (int i = 0; i < str.Length; i++)
        {
            if (!char.IsLetter(str[i]) &&
            str[i] != ' ') 
            {
                Console.WriteLine("Enter only alphabets and space");
                return;
            }
        }
  
        Console.WriteLine("Encrypted Code using Latin Alphabet");
        for (int i = 0; i < str.Length; i++)
        {
            if (str[i] >= 'A' && str[i] <= 'Z')
            {
                Console.Write(str[i] - 'A' + 1 + " ");
            }
            else if (str[i] >= 'a' && str[i] <= 'z') 
            {
                Console.Write(str[i] - 'a' + 1 + " ");
            }
            if (str[i] == ' ')
                Console.Write(str[i]);
  
        }
        Console.WriteLine();
    }
  
    // Driver Code
    public static void Main(String[] args)
    {
        String str = "geeksforgeeks";
        cipher(str);
    }
}
  
// This code has been contributed by 29AjayKumar

<?php
// Latin Alphabet Cipher 
// Encryption header files
  
// function for calculating
// the encryption
function cipher($str)
{
        if (!ctype_alpha($str))
        {
            printf("Enter only " + 
                   "alphabets and space\n");
            return;
        }
  
    printf("Encrypted Code using ");
    printf("Latin Alphabet\n");
    for ($i = 0; $i < strlen($str); $i++) 
    {
        if ($str[$i] >= 'A' && 
            $str[$i] <= 'Z')
            echo (ord($str[$i]) - 
                    65 + 1). " ";
  
        else if ($str[$i] >= 'a' && 
                 $str[$i] <= 'z')
            echo (ord($str[$i]) - 
                    97 + 1). " ";
  
    }
    echo "\n";
}
  
// Driver Code
$str = "geeksforgeeks";
cipher($str);
  
// This code is contributed by mits.
?>

<script>
    // JavaScript program to demonstrate
    // Latin Alphabet Cipher
    // function for calculating the encryption
    function cipher(str) {
        for (var i = 0; i < str.length; i++) {
            if (!isLetter(str[i]) && str[i] !== " ") {
                document.write("Enter only alphabets and space");
                return;
              }
        }
  
        document.write("Encrypted Code using Latin Alphabet <br>");
            for (var i = 0; i < str.length; i++) {
                  if (str[i] >= "A" && str[i] <= "Z") {
                    document.write(str[i].charCodeAt(0) 
                                   - "A".charCodeAt(0) + 1 + "");
                  } 
                  else if (str[i] >= "a" && str[i] <= "z") {
                    document.write(str[i].charCodeAt(0) 
                               - "a".charCodeAt(0) + 1 + " ");
                  }
                  if (str[i] == " ") 
                    document.write(str[i]);
            }
            document.write("<br>");
      }
  
      //check isLetter
      function isLetter(str) {
            return str.length === 1 && str.match(/[a-z]/i);
      }
  
      // Driver Code
      var str = "geeksforgeeks";
      cipher(str);
</script>