Geting all subsites for the current user

Scenario:
I wanted to write a webpart which displays all the sub-sites user have access to. Note this is different Webpart from the one I wrote earlier here which displays all the site collection user has access to.

I thought of iterating through AllWebs property of the Site Collection and then checking for each one of them if user do have Access to the sub-web or not. But I got Access Denied while rending the webpart as a regular user with limited permission.

Solution:
GetSubwebsForCurrentUser, was the solution. SPWeb class has this method which returns the collection of subsites beneath the current site of which the current user is a member.

Code:

var subwebCollection = SPContext.Current.Web.GetSubwebsForCurrentUser();