Python3 Script for Random Magic Bytes: Difference between revisions

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Created page with " <code>$EDITOR MagicBytes.py</code> <pre> import random def generate_magic_bytes(): while True: # Generate 4 random bytes magic_bytes = [random.randint(0x80, 0xFF) for _ in range(4)] # Convert to 32-bit integer magic_int = (magic_bytes[0] << 24) | (magic_bytes[1] << 16) | (magic_bytes[2] << 8) | magic_bytes[3] # Check if it's a large number (arbitrarily chosen as > 2 billion) if magic_int > 2000000000: r..."
 
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Latest revision as of 15:50, 29 May 2025

$EDITOR MagicBytes.py

import random

def generate_magic_bytes():
    while True:
        # Generate 4 random bytes
        magic_bytes = [random.randint(0x80, 0xFF) for _ in range(4)]

        # Convert to 32-bit integer
        magic_int = (magic_bytes[0] << 24) | (magic_bytes[1] << 16) | (magic_bytes[2] << 8) | magic_bytes[3]

        # Check if it's a large number (arbitrarily chosen as > 2 billion)
        if magic_int > 2000000000:
            return magic_bytes

def main():
    new_magic_bytes = generate_magic_bytes()

    print("New magic bytes for your Litecoin fork:")
    for i, byte in enumerate(new_magic_bytes):
        print(f"pchMessageStart[{i}] = 0x{byte:02x};")

    print("\nCombined 32-bit integer:", sum(b << (24 - 8*i) for i, b in enumerate(new_magic_bytes)))

if __name__ == "__main__":
    main()

  • Run with

python3 MagicBytes.py

  • Example output:
New magic bytes for your Litecoin fork:
pchMessageStart[0] = 0xab;
pchMessageStart[1] = 0x99;
pchMessageStart[2] = 0x8b;
pchMessageStart[3] = 0xc5;

Combined 32-bit integer: 2878966725