A simple plugin for different browsers: Chrome, Firefox, Internet Explorer and Safari -- 2

We need a simple plugin for our solution in different browsers: Chrome, Firefox, Internet Explorer and Safari. we need a plugin that 1-get user's credential from server 2- Decrypt data and inject them into the username and password field and post the form. For example the user opens [login to view URL], plugin detects the website and then asks server for data (username and password) and then injects data received from the server into username and password field and submits the form and helps user login to [login to view URL] (for instance) 3- We should be able to help users to install plugin easily by clicking a button on our website. 4- Server might send up to 10 credential per request, so plugin should/must delete credential information after 15 minutes (we should be able to change the time from our back-end) 5-plugin should work if and only if (IFF) the user is already logged in in our website on that specific browser. we can discuss on that later *You should be able to sign our NDA or any other standard NDA . Thanks Bam