https://github.com/singhxtushar/char_cipher_prog

Cipher program to encode and decode the secret message. In this program I have only use character and spaces but it have anything like numbers, symbols and etc.
https://github.com/singhxtushar/char_cipher_prog

Last synced: 3 months ago
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Cipher program to encode and decode the secret message. In this program I have only use character and spaces but it have anything like numbers, symbols and etc.

• Host: GitHub
• URL: https://github.com/singhxtushar/char_cipher_prog
• Owner: SINGHxTUSHAR
• Created: 2023-03-12T00:43:37.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2023-03-12T00:50:13.000Z (over 2 years ago)
• Last Synced: 2023-06-01T08:49:25.089Z (over 2 years ago)
• Language: C++
• Size: 2.93 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# CHAR_CIPHER_PROG

Cipher program to encode and decode the secret message. In this program I have only use character and spaces but it have anything like numbers, symbols and etc.

A simple and very old method of sending secret messages is the substitution cipher.

  We all have used this cipher with our friends when we were a kid.

  Basically, each letter of the alphabet gets replaced by another letter of the alphabet.

  For example, every 'a' get replaced with an 'X', and every 'b' gets replaced with a 'Z', etc.

  

  

  Write a program thats ask a user to enter a secret message.

  

  

  Encrypt this message using the substitution cipher and display the encrypted message.

  Then decryped the encrypted message back to the original message.

  We will be using 2 strings below for the subsitition.

  For example, to encrypt we can replace the character at position n in alphabet string

  with the character at position n in key string.

  

  

  To decrypt we can replace the character at position n in key

  with the character at position n in alphabet.

  

  

  Currently the cipher only substitutes letters - we could easily add digits, puncuation, and so forth.

  Also, currently the cipher always substitues a lowercase letter with an uppercase letter and vice-versa.

  

  using c++ style string and their operations and functionality.

  

  Alot of improvement can be done in this program like adding a large set of string and character, number , symbols and etc.

  I had just code the simplest and easy to understand cipher for basic functionality.