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- o Major features (circuit building, security):
- - Tor authorities, relays, and clients only use ntor, except for
- rare cases in the hidden service protocol.
- - Authorities, relays and clients specifically check that each
- descriptor has an ntor key.
- - Clients avoid downloading a descriptor if the relay version is
- too old to support ntor.
- - Client code never chooses nodes without ntor keys: they will not
- be selected during circuit-building, or as guards, or as directory
- mirrors, or as introduction or rendezvous points.
- - Circuit-building code assumes that all hops can use ntor,
- except for rare hidden service protocol cases.
- o Major bugfixes (circuit building):
- - Hidden service client to intro point and service to rendezvous point
- connections use the TAP key supplied by the protocol.
- Fixes bug 19163; bugfix on 0.2.4.18-rc.
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