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-rw-r--r--doc/spec/dir-spec.txt17
1 files changed, 17 insertions, 0 deletions
diff --git a/doc/spec/dir-spec.txt b/doc/spec/dir-spec.txt
index cd47eb029..dc9716334 100644
--- a/doc/spec/dir-spec.txt
+++ b/doc/spec/dir-spec.txt
@@ -1390,6 +1390,23 @@ $Id$
The most recent v3 consensus should be available at:
http://<hostname>/tor/status-vote/current/consensus.z
+ Starting with Tor version 0.2.1.1-alpha is also available at:
+ http://<hostname>/tor/status-vote/current/consensus/<F1>+<F2>+<F3>.z
+
+ Where F1, F2, etc. are authority identity fingerprints the client trusts.
+ Servers will only return a consensus if more than half of the requested
+ authorities have signed the document, otherwise a 404 error will be sent
+ back. The fingerprints can be shortened to a length of any multiple of
+ two, using only the leftmost part of the encoded fingerprint. Tor uses
+ 3 bytes (6 hex characters) of the fingerprint.
+
+ Clients SHOULD sort the fingerprints in ascending order. Server MUST
+ accept any order.
+
+ Clients SHOULD use this format when requesting consensus documents from
+ directory authority servers and from caches running a version of Tor
+ that is known to support this URL format.
+
A concatenated set of all the current key certificates should be available
at:
http://<hostname>/tor/keys/all.z