CNS Assignment - I

Assignment submitted by Vishal Vignesh S and Sudharsan N

Introduction

This program provides a simplified GUI to explore some classical encryption algorithms as well as some modern encryption algorithms. The Program also has a built in file encryptor capable of encrypting ANY filetype using an AES-256 bit cipher.

Table of Contents

• Running The Program

• Classical Ciphers

  • Playfair
  • Vignere
  • Vernam
  • Railfence

• Modern Ciphers

  • DES
  • AES
  • RSA

• File Encryption

• Acknowledgements

• License

Executing The Code

• Clone the repo in any folder
• Open Command Prompt (Make sure NPM and Node are Installed)
• Run the command npm install
• Run the command npm start

Classical Ciphers

Playfair Cipher

Encryption:

Decryption:

Vignere Cipher

Encryption:

Decryption:

Vernam Cipher

Encryption:

Decryption:

Railfence Cipher

Encryption:

Decryption:

Modern Ciphers

DES Encryption

Encryption:

Decryption:

AES Encryption

Encryption:

Decryption:

RSA Encryption

Encryption:

Decryption:

File Encryption

Encryption

File Before -> After Encryption

Decryption:

Acknowledgements

• Vishal Vignesh S, 122003288, CSE IIIrd Year
• Sudharsan N, 122003260, CSE IIIrd Year

License

Copyright 2021 Vishal Vignesh S

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.