[torspec/master] Try to explain which HSDirs are ‘responsible for’ a descriptor

[nickm@xxxxxxxxxxxxxx]

commit bf46e42ae3f8d30c6cd4bfc6eeb132ad69190f82
Author: Robert Ransom <rransom.8774@xxxxxxxxx>
Date:   Mon Apr 11 03:27:16 2011 -0700

    Try to explain which HSDirs are â??responsible forâ?? a descriptor
---
 rend-spec.txt |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/rend-spec.txt b/rend-spec.txt
index f36db9f..023c83b 100644
--- a/rend-spec.txt
+++ b/rend-spec.txt
@@ -508,9 +508,12 @@
    service directories with consecutive onion IDs. Bob's OP learns about
    the complete list of hidden service directories by filtering the
    consensus status document received from the directory authorities. A
-   hidden service directory is deemed responsible for all descriptor IDs in
-   the interval from its direct predecessor, exclusive, to its own ID,
-   inclusive; it further holds replicas for its 2 predecessors.
+   hidden service directory is deemed responsible for a descriptor ID if
+   it has the HSDir flag and its identity digest is one of the first three
+   identity digests of HSDir relays following the descriptor ID in a
+   circular list. A hidden service directory will only accept a descriptor
+   whose timestamp is no more than three days before or one day after the
+   current time according to the directory's clock.
 
    Bob's OP publishes a new v2 descriptor once an hour or whenever its
    content changes. V2 descriptors can be found by clients within a given



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