gistfile1.txt

#!/usr/bin/env python3
# Copyright 2023 Dave Carlson @thecubic
# the best and most out-of-work programmer ever

import hashlib

import random

choices = (
    "zero",
    "one",
    "two",
    "three",
    "four",
    "five",
    "six",
    "seven",
    "eight",
    "nine",
    "a",
    "b",
    "c",
    "d",
    "e",
    "f"
)

number = 3
attempts = 0

while True:
    match = True
    attempts += 1
    chars = [random.choice(choices) for _ in range(number)]
    sentence = f"The SHA512 of this sentence starts with {', '.join(chars)}".encode('ascii')
    shash = hashlib.sha512(sentence).hexdigest()
    for i in range(number):        
        if choices.index(chars[i]) != int(shash[i], 16):
            match = False
            break
    if match:
        break
if match:
    print(f"match after {attempts} attempts")
    print(sentence.decode('ascii'))
    print(shash)
else:
    print("sorry, no matches")