A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Certificate Transparency
Author(s) : Ben Laurie
Adam Langley
Emilia Kasper
Filename : draft-laurie-pki-sunlight-04.txt
Pages : 28
Date : 2012-12-19
Abstract:
The aim of Certificate Transparency is to have every public end-
entity (for example, web servers) and intermediate TLS certificate
issued by a known Certificate Authority recorded in one or more
certificate logs. In order to detect misissuance of certificates,
all logs are publicly auditable. In particular, domain owners or
their agents will be able to monitor logs for certificates issued on
their own domain.
To protect clients from unlogged misissued certificates, each log
signs all certificates it records, and clients can choose not to
trust certificates that are not accompanied by an appropriate log
signature. For privacy and performance reasons log signatures are
embedded in the TLS handshake via the TLS authorization extension, in
a stapled OCSP extension, or in the certificate itself via an X.509v3
certificate extension.
To ensure a globally consistent view of any particular log, each log
also provides a global signature over the entire log. Any
inconsistency of logs can be detected through cross-checks on the
global signature. Consistency between any pair of global signatures,
corresponding to snapshots of a particular log at different times,
can be efficiently shown.
Logs are only expected to certify that they have seen a certificate,
and thus we do not specify any revocation mechanism for log
signatures in this document. Logs are append-only, and log
signatures do not expire.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-laurie-pki-sunlight
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-laurie-pki-sunlight-04
A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-laurie-pki-sunlight-04
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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