Trusted Linker Download Redirection (TLDR)

Document Type Expired Internet-Draft (individual)
Author Ben Kennish 
Last updated 2015-10-10 (latest revision 2015-04-08)
Replaces draft-bennish-http-tldr
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes an HTTP extension that allows user agents to verify downloaded data. It provides a standardised way for an HTTPS URL (assumed trustworthy) to redirect to a non-HTTPS URL and give the user agent extra information about the resulting output (e.g. a downloaded file.) Once that is retrieved, it can check whether or not the data has been modified since the trustworthy site checked it (e.g. altered during transit or as a result of the destination site having been compromised.)


Ben Kennish (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)