{"id":135411,"date":"2024-09-06T12:30:58","date_gmt":"2024-09-06T07:00:58","guid":{"rendered":"https:\/\/www.vskills.in\/certification\/tutorial\/?page_id=135411"},"modified":"2024-09-06T12:30:59","modified_gmt":"2024-09-06T07:00:59","slug":"generating-access-tokens","status":"publish","type":"page","link":"https:\/\/www.vskills.in\/certification\/tutorial\/generating-access-tokens\/","title":{"rendered":"Generating Access Tokens"},"content":{"rendered":"\n<p>Once a user has successfully authenticated, you can generate an access token to represent their identity. This token can be included in subsequent requests to verify their authorization. In this section, we&#8217;ll demonstrate how to generate access tokens using JWTs in FastAPI.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Creating an Access Token<\/strong><\/h2>\n\n\n\n<p>Python<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import jwt\nfrom fastapi import Depends, HTTPException\nfrom app.models import User\n\ndef create_access_token(data: dict):\n    token = jwt.encode(data, \"your_secret_key\", algorithm=\"HS256\")\n    return token\n\n@router.post(\"\/login\", response_model=Token)\nasync def login(user: Login, db: Session = Depends(get_db)):\n    db_user = await db.query(User).filter(User.email == user.email).first()\n    if not db_user or not verify_password(user.password, db_user.password):\n        raise HTTPException(status_code=401, detail=\"Incorrect username or password\")\n\n    access_token = create_access_token({\"sub\": &nbsp;  db_user.id})\n    return {\"access_token\": access_token}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Decoding and Verifying Access Tokens<\/strong><\/h2>\n\n\n\n<p>Python<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>def decode_access_token(token: str):\n    try:\n        data = jwt.decode(token, \"your_secret_key\", algorithms=&#91;\"HS256\"])\n        return data\n    except jwt.ExpiredSignatureError:\n        raise HTTPException(status_code=401, detail=\"Token expired\")\n    except &nbsp;  jwt.InvalidTokenError:\n        raise HTTPException(status_code=401, detail=\"Invalid token\") &nbsp; \n\n@router.get(\"\/protected\")\nasync def protected_route(request: Request):\n    token = request.headers.get(\"Authorization\").split()&#91;1]\n    data = decode_access_token(token)\n    user_id = data&#91;\"sub\"]\n    # ...\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Terms:<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Token Expiration:<\/strong> Set an expiration time for access tokens to prevent unauthorized access.<\/li>\n\n\n\n<li><strong>Refresh Tokens:<\/strong> Consider using refresh tokens to allow users to renew their access tokens without re-authenticating.<\/li>\n\n\n\n<li><strong>Token Revocation:<\/strong> Implement a mechanism to revoke tokens if they are compromised.<\/li>\n\n\n\n<li><strong>Security:<\/strong> Keep your secret key secret and use a strong algorithm for signing JWTs.<\/li>\n<\/ul>\n\n\n\n<p>By following these steps, you can effectively generate and manage access tokens in your FastAPI application, protecting your API endpoints from unauthorized access.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Once a user has successfully authenticated, you can generate an access token to represent their identity. This token can be included in subsequent requests to verify their authorization. In this section, we&#8217;ll demonstrate how to generate access tokens using JWTs in FastAPI. Creating an Access Token Python Decoding and Verifying Access Tokens Python Terms: By&#8230;<\/p>\n","protected":false},"author":16,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-135411","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Generating Access Tokens - Tutorial<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vskills.in\/certification\/tutorial\/generating-access-tokens\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Generating Access Tokens - Tutorial\" \/>\n<meta property=\"og:description\" content=\"Once a user has successfully authenticated, you can generate an access token to represent their identity. 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