Google Code Blog: Flashy New Authentication: AuthSub Adds Support for ActionScript Flashy New Authentication: AuthSub Adds Support for ActionScript Today, we are happy to announce the launch of AuthSub for ActionScript , a new component of the well-known AuthSub authentication interface for the Google Data Protocol . This new feature enables Flash and Silverlight applications to access data securely on behalf of a user, without the application ever seeing the user’s private login credentials. To use AuthSub for Actionscript (or as we’re calling it, AuthSubAS), first ensure that the API you are accessing offers cross-domain support. To do this, simply check for a crossdomain.xml file like those offered by the Picasa Web Albums Data API and the YouTube Data API . Then, if the API supports cross-domain scripting, you can simply point your Flash app to https://accounts.googleapis.com/accounts/AuthSub{Request,SessionToken} and authenticate. If you’re familiar with how AuthSub fo
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