Tips on securely saving passwords using Greasemonkey

Created a custom userscript that prompts users to save their login credentials in order to avoid entering them repeatedly.

Familiar with using localStorage.setItem() to store key-value pairs, but concerned about storing passwords in clear text. Seeking advice on best practices for securely storing passwords.

Are there any browser APIs available for secure password storage? Need the ability to revert the hash (if hashed) for implementing automatic login on a website.

Thank you in advance for any guidance.

javascriptsecuritypasswordsgreasemonkey

Answer №1

Using GreaseMonkey and JS may not be the best approach for securely storing passwords, as there are many challenges in ensuring their protection within the limitations of browser sandboxing.

An alternative solution could involve encrypting the password(s) with AES or another encryption method - various resources provide AES implementations in JavaScript. However, these implementations may be slower than native code, and require passphrase input on each page where passwords are accessed (leading to potential security risks if the passphrase is stored).

Given GM's focus on enhancing in-page scripts, its security capabilities are limited. For a more secure means of managing web passwords, consider utilizing a browser extension designed for this purpose - numerous options exist among established password managers.

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