token-based authentication

jupyter notebook 提到这个安全授权机制,我不知道中文。但是可以由英文解释:

https://stackoverflow.com/questions/1592534/what-is-token-based-authentication

于是我的理解是。你的本地的jupyter 在命令行给你创建了一个tocken:

然后我用浏览器访问就可以打开我这个文件夹的jupyter notebook,如果用同局域网的机器,也就是ping的通的机器,也可以访问这个本机网页。比如:在地址是172.18.33.122的电脑浏览器上输入172.18.49.19:8890/?token=...也是可以访问的。根据推测。因为如果不用token加密是可以直接打开的,如果用了token加密那可能就需要添加token才能打开。

### Two-Factor Authentication Implementation and Best Practices Two-factor authentication (2FA) significantly enhances account security by requiring not only a password but also an additional piece of information that only the user has access to. For optimal security, using a strong master password along with enabling 2FA is recommended[^1]. This combination ensures that even if someone manages to obtain your password, they still cannot gain unauthorized access without this second form of verification. #### Common Types of Second Factors Used in 2FA - **SMS-based codes**: A code sent via text message. - **Authenticator apps**: Applications like Google Authenticator generate time-based one-time passwords (TOTP). - **Hardware tokens**: Devices such as YubiKey provide physical confirmation through USB or NFC connections. #### Implementing 2FA Effectively To implement two-factor authentication effectively within applications: 1. Choose reliable methods for delivering second factors; consider both convenience and security when selecting options available to users. 2. Ensure all communications between client devices and servers are encrypted over HTTPS/TLS channels. 3. Store secret keys securely on server-side infrastructure while avoiding plaintext storage at any point during transmission or rest phases. 4. Provide clear instructions guiding end-users throughout setup processes including recovery mechanisms should primary means become unavailable temporarily due to loss/theft etc. ```python import pyotp from flask import Flask, request app = Flask(__name__) @app.route('/verify_2fa', methods=['POST']) def verify(): otp_secret = "your-secret-key" provided_code = request.form.get('code') totp = pyotp.TOTP(otp_secret) verified = totp.verify(provided_code) return {'status': 'success' if verified else 'failure'} if __name__ == "__main__": app.run(debug=True) ``` This Python example demonstrates how TOTP can be implemented using `pyotp` library alongside web framework Flask. The `/verify_2fa` endpoint accepts POST requests containing OTPs generated from authenticator apps which then get validated against pre-shared secrets stored securely on backend systems. --related questions-- 1. What alternatives exist besides SMS for sending temporary passcodes? 2. How does storing shared secrets impact overall system architecture design choices? 3. Can hardware token integration improve upon software-based approaches alone? 4. Are there specific libraries supporting multi-platform development across mobile/desktop environments?
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