One-time password is deployed widely as a second factor of authentication to enhance security. As a developer, how should we implement OTP generation in the application and what should be taken care of in each implementation?
The most "naive" way...
As a ruby programmer, you probably already know that the code files in gem's lib folder are automatically loaded into $LOAD_PATH when you require the gem.
Today, I encountered a scenario that I have to manually load source code files from spec...
We have a rails app, and I am developing a rails engine (let's call it engine A) to attach to the rails app. Engine A is specified in the gem file of the rails app. Engine A is a wrapper of a public rails engine gem (let's call it engine B), so...
I was trying some feature today, and that feature required to modify /etc/sudoers. No problem, it seemed that my favorite editor vim can accomplish it. Open up a terminal, I entered sudo vim /etc/sudoers, modified and saved it. Everything was ok,...
It is quite common to have a component to display latest contents of the website. Our customer, a local leading online news provider, wanted to have such a feature also. We wrote a simple SQL query to get the contents and displayed them out as...
Recently we adopted docker to automate the deployment process. Everything worked great on small projects, and we really enjoyed that.
However, we encountered gem installation timeout problem when migrating a big project. The error happened...
Refinery CMS is using Devise as authentication provider. Devise supports session timeout, but Refinery CMS does not enable it by default. Anyway, it is always good to set a session timeout for logged in users to improve security. There are...
Probably you are used to SSH login authenticated by either private key or password. However, is it possible to use both of them for SSH login?
OpenSSH added support for multiple required authentication in SSH protocol 2 since OpenSSH version 6.2...
Suppose we have a text input field for user to input date in certain format (e.g., DD/MM/YYYY). How can we do front end validation correctly on this field?
It is easy to come up an idea that the date string can be validated against regular...
It is important to process and present date and time correctly when building an application, especially when your application is going to be used by users from more than one time zones. This article will give you more insights on how to deal time...