Implementing a secure password reset mechanism that uses one-time passwords (OTP) and public-key cryptography algorithms to prevent unauthorized access is a complex task, but here are the general steps you can follow to implement this mechanism in Python:
Generate Public and Private Keys:
To implement a public-key cryptography algorithm, you first need to generate a public and private key pair. You can use a library such as PyCryptodome to generate the keys.
Create OTP:
You can use a library such as PyOTP to generate a one-time password (OTP) for the user.
Encrypt the OTP:
Once the OTP is generated, you can encrypt it using the user's public key. You can use a library such as PyCryptodome to perform the encryption.
Store the Encrypted OTP:
Store the encrypted OTP and the user's email or phone number in a database for future reference.
Send OTP to the user:
You can use a library such as Twilio or SendGrid to send the encrypted OTP to the user's email or phone number.
Decrypt the OTP:
When the user enters the OTP, retrieve the encrypted OTP from the database and decrypt it using the user's private key.
Verify the OTP:
Compare the decrypted OTP with the OTP entered by the user. If they match, allow the user to reset their password.