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478dec6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | import hashlib
from config.constant import SecurityConstants
from passlib.hash import bcrypt
def _prepare_password(password: str) -> bytes:
password_bytes = password.encode("utf-8")
# SHA-256 = 32 bytes (ALWAYS < 72)
digest = hashlib.sha256(password_bytes).digest()
# This slice is technically redundant, but explicit
return digest[:SecurityConstants.BCRYPT_MAX_BYTES]
def hash_password(password: str) -> str:
prepared = _prepare_password(password)
# ASSERTION (fail fast if something is wrong)
assert len(prepared) <= 72, f"bcrypt input too long: {len(prepared)} bytes"
return bcrypt.hash(prepared)
def verify_password(plain_password: str, hashed_password: str) -> bool:
prepared = _prepare_password(plain_password)
assert len(prepared) <= 72, f"bcrypt input too long: {len(prepared)} bytes"
return bcrypt.verify(prepared, hashed_password)
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