crypt Module¶
⚠️ REMOVED IN PYTHON 3.13: The crypt module was deprecated in Python 3.11 and removed in Python 3.13.
The crypt module provides Unix password hashing functionality using the crypt() system call (Unix/Linux only).
Complexity Reference¶
| Operation | Time | Space | Notes |
|---|---|---|---|
crypt() |
O(n) | O(1) | n = work factor/iterations; intentionally slow |
| Hash password | O(n) | O(n) | Compute hash |
Password Hashing¶
Hashing Passwords¶
import crypt
# Hash password - O(n)
password = "mypassword"
hashed = crypt.crypt(password, salt=crypt.METHOD_SHA512)
print(hashed) # Hashed format
# Verify by re-hashing
if crypt.crypt(password, hashed) == hashed:
print("Password correct")