SHA-256 Encryption Implementation

This repository contains a Python implementation of the SHA-256 encryption algorithm. SHA-256 (Secure Hash Algorithm 256-bit) is one of the cryptographic hash functions designed by the National Security Agency (NSA) and is widely used in various security applications and protocols.

Usage

Prerequisites

• Python 3.x

Getting Started

1. Clone this repository:

   git clone https://github.com/sayantancodex/SHA-256-Encryption-Implementation.git

2. Navigate to the project directory:

   cd SHA-256-Encryption-Implementation

3. Run the script with a string input:

   python sha256.py "your_message_here"

Implementation Details

The sha256.py script provides an implementation of the SHA-256 hash function. Here's a brief overview of the key components:

• Padding: The input message is padded to ensure its length is a multiple of 512 bits.
• Parsing: The padded message is divided into 512-bit blocks.
• Initial Hash Value: Initial hash values (h0 to h7) are set as per the SHA-256 specification.
• Message Schedule: For each message block, a message schedule is prepared based on the previous message block.
• Compression Function: The compression function iterates over the message blocks, updating the hash values based on the current block and the message schedule.

Contributors

• Sayantan Patra

License

This project is licensed under the MIT License.