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Security utilities - password hashing, JWT token handling.
"""
from passlib.context import CryptContext
from jose import JWTError, jwt
from datetime import datetime, timedelta
from typing import Optional
from ..config import settings
# Password hashing
pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
def hash_password(password: str) -> str:
"""Hash a plain text password."""
return pwd_context.hash(password)
def verify_password(plain_password: str, hashed_password: str) -> bool:
"""Verify a password against its hash."""
return pwd_context.verify(plain_password, hashed_password)
def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
"""Create a JWT access token."""
to_encode = data.copy()
if expires_delta:
expire = datetime.utcnow() + expires_delta
else:
expire = datetime.utcnow() + timedelta(minutes=settings.JWT_EXPIRATION_MINUTES)
to_encode.update({"exp": expire})
encoded_jwt = jwt.encode(to_encode, settings.JWT_SECRET, algorithm=settings.JWT_ALGORITHM)
return encoded_jwt
def decode_access_token(token: str) -> Optional[dict]:
"""Decode and verify a JWT token."""
try:
payload = jwt.decode(token, settings.JWT_SECRET, algorithms=[settings.JWT_ALGORITHM])
return payload
except JWTError:
return None
def create_password_reset_token(email: str) -> str:
"""Create a password reset token (time-limited)."""
delta = timedelta(hours=1)
return create_access_token({"sub": email, "type": "password_reset"}, delta)
def verify_password_reset_token(token: str) -> Optional[str]:
"""Verify password reset token and return email."""
payload = decode_access_token(token)
if payload and payload.get("type") == "password_reset":
return payload.get("sub")
return None |