This repository contains a collection of projects dedicated to showcasing various cryptographic functionalities using C#. The projects demonstrate the creation of certificates, certificate chains, digital signatures, encryption/decryption, and hashing.

Type: Console Project

Description: This project demonstrates the creation of an X.509 certificate. It provides hands-on insights into how a single certificate can be generated and the properties it possesses.

Usage: Run the project to generate and view the details of a newly created certificate.

Type: Console Project

Description: This project delves into the creation of a certificate chain, consisting of three certificates:

Root Certificate
Intermediate Certificate
End Certificate

The root signs the intermediate, and the intermediate signs the end certificate, thus forming a chain of trust.

Usage: Execute the project to generate a chain of certificates and inspect their hierarchical trust relationship.

Type: Console Project

Description: The focus of this project is on digital signatures. It demonstrates how to sign a SHA-256 hash of a string and then verify the signature to ensure data integrity and authenticity.

Usage: Run the project, provide a string input, and witness the process of signing and verification using the generated digital signature.

Type: Console Project

Description: This project showcases asymmetric encryption using RSA. It guides through the process of encrypting a string using a public RSA key and then decrypting it using the corresponding private RSA key.

Usage: Initiate the project, input a string, and observe the encryption and subsequent decryption process, ensuring data confidentiality.

Type: Console Project

Description: Hashing is fundamental in cryptography. This project offers a practical demonstration of hashing a string using two algorithms: SHA-256 and SHA-3. It emphasizes the fixed-length output and non-reversibility of hashes.

Usage: Run the application, provide a string, and see the hashed outputs using both SHA-256 and SHA-3 algorithms.

Note: Before running any of the projects, ensure you've set up the necessary dependencies and configurations as required. Always ensure the safety and security of any cryptographic operation and key management.