ascii_sha256_generator

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Filename: ascii_sha256_generator.py
# Version: 1.0.0
# Author: Jeoi Reqi

"""
Description:
    - This script calculates SHA-256 hashes for every ASCII character and saves them to a file.

Functions:
    - sha256sum(string):
        Return the SHA-256 hash of a given string.
    - calculate_ascii_sha256():
        Calculate SHA-256 hashes for every ASCII character.
    - save_sha256_to_file(sha256_dict, filename):
        Save the SHA-256 dictionary to a file in JSON format.

Requirements:
    - Python 3.x

Usage:
    - Run the script to generate SHA-256 hashes for ASCII characters and save them to 'sum_ascii_sha256.txt'.

Additional Notes:
    - This script may take some time to complete, depending on the speed of the system.
"""

import hashlib
import json

def sha256sum(string):
    """Return the SHA-256 hash of a given string."""
    return hashlib.sha256(string.encode()).hexdigest()

def calculate_ascii_sha256():
    """Calculate SHA-256 hashes for every ASCII character."""
    ascii_sha256_dict = {}
    print("Calculating SHA-256 hashes for ASCII characters. This may take some time...")
    for i in range(128):  # ASCII range
        char = chr(i)
        sha256_hash = sha256sum(char)
        ascii_sha256_dict[char] = sha256_hash
    return ascii_sha256_dict

def save_sha256_to_file(sha256_dict, filename):
    """Save the SHA-256 dictionary to a file in JSON format."""
    with open(filename, 'w', encoding='utf-8') as outfile:
        json.dump(sha256_dict, outfile, indent=4)

if __name__ == "__main__":
    filename = 'sum_ascii_sha256.txt'
    ascii_sha256_dict = calculate_ascii_sha256()
    save_sha256_to_file(ascii_sha256_dict, filename)
    print("\nSHA-256 hashes for ASCII characters saved to:", filename)