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Liip Blog:
2-step verification with Google Authenticator and PHP
August 08, 2012 @ 13:12:01

With the recent focus on security (caused by some major issues with large companies) Google has responded by reinforcing their 2-Factor Authentication method. Thankfully, there's a way you can implement that functionality in your applications too using the information in this tutorial (note: the date of posting is older, but it's definitely relevant now).

Many large web services nowadays support 2-step verification to enhance the security for their users. [...] The main point about 2-step verification is that something else than your computer provides that token. If it's on your computer and that one gets stolen (or hacked into), it won't help much for the additional security. That's why you need a second device for those tokens.

They link to this library that can help you implement something similar to Google's Authenticator tool for your application.

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google authenticator twostep verification library


Liip Blog:
2-Step Verification with Google Authenticator and PHP
August 31, 2011 @ 09:53:05

On the Liip blog there's a recent post talking about a tool Google offers to help you authenticate your users, a one-time passcode generator called Google Authenticator. The post talks about a PHP port of the same idea.

The main point about 2-step verification is that something else than your computer provides that token. If it's on your computer and that one gets stolen (or hacked into), it won't help much for the additional security. That's why you need a second device for those tokens. Some banks do that with SMS/Text Messages (Facebook, too), other give you special devices for that (eg. RSA keys) and the last group does it with your smartphone.

At the request of a client, they created a tool that did just this, but for PHP. As a result, they created the GoogleAuthenticator library that makes it easy to implement in your application. There's even an example of it in use. For more information about the Google Authenticator tool, see this page on Google Code.

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google authenticator library port twostep verification user qrcode


3 Engineers Blog:
3 Step Layouts in Zend Framework
April 04, 2011 @ 13:04:06

In a recent post to the 3 Engineers blog, they take the usual "Two Step" approach the Zend Framework takes to generating view data (Zend_View + Zend_Layout) and takes it up one more step by using Three Step Layouts with a simple wrapper.

While the Two Step View pattern creates a reasonable paradigm for seperating layout presentation from page presentation, enabling Three-level Inheritance allows for even better separation. In other words, using 3 Step Layouts is a possible and often necessary investment to make when implementing front-ends in Zend Framework projects; they allow fine grain re-usability that provides for a DRYer presentation layer.

They have a three step process you can follow (complete with code snippets) that'll have you working with their 3 layers easily. The wrapper is a sort of "boostrap" for the layout. The nested layout is then pulled into this wrapper (for example's sake, theirs is called "default") and then the view can be served as normal and placed into the content location. There's also a bit of code showing how to switch out the layout if there's ever a need - like different layouts for the admin, user and main parts of your application.

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zendframework twostep threestep layout wrapper view zendview zendlayout


Pádraic Brady's Blog:
Complex Views with the Zend Framework - Pt 5 The Two-Step View Pattern
May 24, 2007 @ 08:43:00

Pádraic Brady is back today with the latest installment (part 5!) of his look at complex views in the Zend Framework. This time, her focuses on something called the Two-Step Pattern - a pattern similar to the Layouts pattern.

Part 5 of our series takes a small time-out from approaching a Composite View solution to reusable Views to take a peek at a simpler approach useful for simpler types of web applications. As we've discussed previously Composite Views allow the nesting of reusable View elements, effectively building a View based on a hierarchy of Views. But often there are simpler solutions to simpler problems. One such solution is the Two-Step View pattern, sometimes called Layouts if implemented in a specific way (as we do below!).

He gives the example of a simple website that needs a header and footer on every page. Rather than having to duplicate the header/footer calls across all of the pages, the Layout (Step-Two) pattern defines a single template that contains the header and footer but also uses a "main" area where the content is dynamically inserted.

He includes a full code example to help illustrate the point - a class, Zps_View, that is fed the path to the layouts and the layout files to use before rendering.

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part5 complexviews zendframework twostep designpattern layout part5 complexviews zendframework twostep designpattern layout



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