122 lines
3.4 KiB
Python
122 lines
3.4 KiB
Python
from passlib.context import CryptContext
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from datetime import datetime, timedelta
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from typing import Optional, Dict
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import jwt
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import secrets
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import hashlib
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SECRET_KEY = "VOTRE_SECRET_KEY_A_METTRE_EN_.ENV" # À remplacer par settings.jwt_secret
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 30
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REFRESH_TOKEN_EXPIRE_DAYS = 7
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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def hash_password(password: str) -> str:
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"""Hash un mot de passe avec bcrypt"""
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return pwd_context.hash(password)
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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"""Vérifie un mot de passe contre son hash"""
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return pwd_context.verify(plain_password, hashed_password)
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def generate_verification_token() -> str:
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"""Génère un token de vérification email sécurisé"""
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return secrets.token_urlsafe(32)
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def generate_reset_token() -> str:
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"""Génère un token de réinitialisation mot de passe"""
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return secrets.token_urlsafe(32)
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def hash_token(token: str) -> str:
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"""Hash un refresh token pour stockage en DB"""
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return hashlib.sha256(token.encode()).hexdigest()
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def create_access_token(data: Dict, expires_delta: Optional[timedelta] = None) -> str:
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"""
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Crée un JWT access token
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Args:
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data: Payload (doit contenir 'sub' = user_id)
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expires_delta: Durée de validité personnalisée
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"""
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to_encode = data.copy()
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if expires_delta:
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expire = datetime.utcnow() + expires_delta
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else:
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expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
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to_encode.update({"exp": expire, "iat": datetime.utcnow(), "type": "access"})
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encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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return encoded_jwt
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def create_refresh_token(user_id: str) -> str:
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"""
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Crée un refresh token (JWT long terme)
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Returns:
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Token JWT non hashé (à hasher avant stockage DB)
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"""
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expire = datetime.utcnow() + timedelta(days=REFRESH_TOKEN_EXPIRE_DAYS)
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to_encode = {
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"sub": user_id,
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"exp": expire,
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"iat": datetime.utcnow(),
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"type": "refresh",
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"jti": secrets.token_urlsafe(16), # Unique ID
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}
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encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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return encoded_jwt
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def decode_token(token: str) -> Optional[Dict]:
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"""
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Décode et valide un JWT
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Returns:
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Payload si valide, None sinon
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"""
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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return payload
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except jwt.ExpiredSignatureError:
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return None
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except jwt.JWTError:
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return None
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def validate_password_strength(password: str) -> tuple[bool, str]:
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"""
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Valide la robustesse d'un mot de passe
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Returns:
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(is_valid, error_message)
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"""
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if len(password) < 8:
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return False, "Le mot de passe doit contenir au moins 8 caractères"
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if not any(c.isupper() for c in password):
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return False, "Le mot de passe doit contenir au moins une majuscule"
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if not any(c.islower() for c in password):
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return False, "Le mot de passe doit contenir au moins une minuscule"
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if not any(c.isdigit() for c in password):
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return False, "Le mot de passe doit contenir au moins un chiffre"
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special_chars = "!@#$%^&*()_+-=[]{}|;:,.<>?"
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if not any(c in special_chars for c in password):
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return False, "Le mot de passe doit contenir au moins un caractère spécial"
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return True, ""
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