33 lines
878 B
Python
33 lines
878 B
Python
# backend/auth/password.py
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# Argon2id password hashing — OWASP 2024 recommended algorithm.
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# Parameters: time_cost=2, memory_cost=64MB, parallelism=2
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from argon2 import PasswordHasher
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from argon2.exceptions import VerifyMismatchError, VerificationError
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ph = PasswordHasher(
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time_cost=2,
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memory_cost=65536, # 64 MB
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parallelism=2,
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hash_len=32,
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salt_len=16,
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)
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def hash_password(password: str) -> str:
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"""Hash a password with Argon2id."""
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return ph.hash(password)
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def verify_password(password: str, hashed: str) -> bool:
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"""Verify a password against its Argon2id hash."""
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try:
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return ph.verify(hashed, password)
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except (VerifyMismatchError, VerificationError):
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return False
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def needs_rehash(hashed: str) -> bool:
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"""Check if hash needs updating (parameters changed)."""
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return ph.check_needs_rehash(hashed)
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