https://github.com/saharshleo/s-des

Inner working of the S-DES algorithm using interesting animations and visualizations
https://github.com/saharshleo/s-des

cryptography decryption encryption s-des sdes sdes-algorithm sdes-cipher

Last synced: about 1 year ago
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Inner working of the S-DES algorithm using interesting animations and visualizations

• Host: GitHub
• URL: https://github.com/saharshleo/s-des
• Owner: saharshleo
• Created: 2021-12-02T09:50:52.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2022-04-27T13:33:34.000Z (about 4 years ago)
• Last Synced: 2025-04-01T10:35:38.243Z (about 1 year ago)
• Topics: cryptography, decryption, encryption, s-des, sdes, sdes-algorithm, sdes-cipher
• Language: JavaScript
• Homepage: https://s-des.herokuapp.com/
• Size: 585 KB
• Stars: 6
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# S-DES (Simplified Data Encryption Standard)



  
https://s-des.herokuapp.com/



This repository showcases the inner working of the S-DES algorithm using interesting animations and visualizations. 

Simplified Data Encryption Standard (S-DES) is similar to the DES algorithm. However, it is a smaller algorithm and has fewer parameters than DES.

- It is a **block cipher** that operates on an **8-bit input**.

- Being a symmetric key cipher, it uses the same key for both encryption and decryption. A random **10-bit key** is used to produce **two 8-bit keys** which will in turn, be used for encryption and decryption.

- It uses both, **substitution** and **diffusion**, just like DES.

Install all packages 


**`npm install`** 

Run the app 


**`npm start`**




| **Key Generation** | ![Key Generation](assets/key_gen.png) |

:-------------------------:|:-------------------------:

| | Encryption          |  Decryption |

:-------------------------:|:-------------------------:|:-------------------------:

Iteration #1    |  ![Encryption (Iteration #1)](assets/enc_1.png)  |  ![Decryption (Iteration #1)](assets/dec_1.png)

Iteration #2    |  ![Encryption (Iteration #2)](assets/enc_2.png)  |  ![Decryption (Iteration #2)](assets/dec_2.png)