jedp/moz-patches — pull request #5 by ryanseys (2013-07-04 01:28:12+00:00)
Title: Include payload and extract fingerprint from payload

This will include an `extra` object in the assertion signing which is then extracted from the iframe in the `contents` variable.

The format of the extra object in the assertion is:
`{ extra : { webrtc : { fingerprint: "" }}}`

and can be found in the second `payload` (after the `~`) of the assertion:

assertion format: `header.payload.signature~header.payload.signature`