TwentyTwelve already puts rel=”author” links in the post byline.
On the author archive pages TwentyTwelve display the author avatar and bio; so you just want AuthorSure to add the profile links beneath the bio.
The recommended AuthorSure settings for TwentyTwelve are:
Author Post Settings: Byline
Author Page Settings: hide title, bio = none, set icons only
Advanced Settings: Append Profile Links to Author Bio inserted by your theme? (checked)