Python Projects & Skills / Security tools in Python

Lesson 24 of 28

Hashing files

hashlib makes SHA-256 fingerprints. Compare a download's hash with the one the developer published to check it wasn't changed.

import hashlib
h = hashlib.sha256()
with open("file.iso", "rb") as f:
    for chunk in iter(lambda: f.read(65536), b""):
        h.update(chunk)
print(h.hexdigest())