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f15cc2f01c
* ci: Add ``flake8-pep3101`` plugin to ``pre-commit`` * refactor: Remove all modulo string formatting * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * refactor: Remove ``flake8-pep3101`` plugin from ``pre-commit`` * revert: Revert to modulo formatting * refactor: Use f-string instead of `join` Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
57 lines
1.8 KiB
Python
57 lines
1.8 KiB
Python
import os
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import random
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import sys
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from . import cryptomath_module as cryptoMath # noqa: N812
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from . import rabin_miller as rabinMiller # noqa: N812
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def main() -> None:
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print("Making key files...")
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make_key_files("rsa", 1024)
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print("Key files generation successful.")
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def generate_key(key_size: int) -> tuple[tuple[int, int], tuple[int, int]]:
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print("Generating prime p...")
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p = rabinMiller.generate_large_prime(key_size)
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print("Generating prime q...")
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q = rabinMiller.generate_large_prime(key_size)
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n = p * q
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print("Generating e that is relatively prime to (p - 1) * (q - 1)...")
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while True:
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e = random.randrange(2 ** (key_size - 1), 2 ** (key_size))
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if cryptoMath.gcd(e, (p - 1) * (q - 1)) == 1:
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break
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print("Calculating d that is mod inverse of e...")
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d = cryptoMath.find_mod_inverse(e, (p - 1) * (q - 1))
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public_key = (n, e)
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private_key = (n, d)
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return (public_key, private_key)
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def make_key_files(name: str, key_size: int) -> None:
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if os.path.exists(f"{name}_pubkey.txt") or os.path.exists(f"{name}_privkey.txt"):
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print("\nWARNING:")
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print(
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f'"{name}_pubkey.txt" or "{name}_privkey.txt" already exists. \n'
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"Use a different name or delete these files and re-run this program."
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)
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sys.exit()
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public_key, private_key = generate_key(key_size)
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print(f"\nWriting public key to file {name}_pubkey.txt...")
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with open(f"{name}_pubkey.txt", "w") as out_file:
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out_file.write(f"{key_size},{public_key[0]},{public_key[1]}")
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print(f"Writing private key to file {name}_privkey.txt...")
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with open(f"{name}_privkey.txt", "w") as out_file:
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out_file.write(f"{key_size},{private_key[0]},{private_key[1]}")
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if __name__ == "__main__":
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main()
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