title: OAuth2 with Password Hashing and JWT Tokens
description: Implement production-ready OAuth2 with password hashing and JWT tokens in JustAPI.
keywords: [JustAPI, OAuth2, JWT, password hashing, security, authentication]
Production OAuth2 with JWT
import jwt
from datetime import datetime, timedelta
from justapi import JustAPIApp, Depends, HTTPException
from fastapi.security import OAuth2PasswordBearer
from passlib.context import CryptContext
SECRET_KEY = "your-secret-key"
ALGORITHM = "HS256"
ACCESS_TOKEN_EXPIRE_MINUTES = 30
app = JustAPIApp()
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
def verify_password(plain: str, hashed: str) -> bool:
return pwd_context.verify(plain, hashed)
def hash_password(password: str) -> str:
return pwd_context.hash(password)
def create_access_token(data: dict) -> str:
to_encode = data.copy()
expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
to_encode.update({"exp": expire})
return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
def get_current_user(token: str = Security(oauth2_scheme)):
try:
payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
user_id = payload.get("user_id")
if user_id is None:
raise HTTPException(status_code=401)
return {"user_id": user_id}
except jwt.PyJWTError:
raise HTTPException(status_code=401, detail="Invalid token")
@app.post("/token")
def login(username: str, password: str):
# Verify credentials and return JWT
token = create_access_token({"user_id": 1, "sub": username})
return {"access_token": token, "token_type": "bearer"}
@app.get("/users/me")
def read_me(current_user: dict = Security(get_current_user)):
return current_user
See Also