commit b67f7d722d4cb94d1e77ff9b300c82d8c72b14c3 Author: Nick Mathewson nickm@torproject.org Date: Wed Jun 17 11:00:58 2020 -0400

Update the list of recommended protocol versions to match >=0.3.5.

Since Tor 0.2.9 has been unsupported since January, 0.3.5 is the oldest supported version, and its features constitute the oldest recommended feature-set.

This patch updates these recommendations:

DirCache=2

Support for consensus diffs. New in 0.3.1.1-alpha.

HSDir=2

Support for v3 onion service descriptors. New in 0.3.0.4-alpha.

HSIntro=4

Support for Ed25519 intropoint authentication keys. New in 0.3.0-4-alpha.

HSRend=2

Support for rendezvous cells longer than 20 bytes. New in 0.2.9.4-alpha.

Link=5

Link padding and link padding negotiation. New in 0.3.3.2-alpha.

LinkAuth=3

Ed25519 link authentication. New in 0.3.0.1-alpha. --- changes/ticket32696 | 7 +++++++ src/feature/dirauth/dirvote.h | 8 ++++---- 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/changes/ticket32696 b/changes/ticket32696 new file mode 100644 index 000000000..8f56fc394 --- /dev/null +++ b/changes/ticket32696 @@ -0,0 +1,7 @@ + o Minor features (directory authority): + - Authorities now recommend protocol versions that are supported + by Tor 0.3.5 and later. (Earlier versions of Tor have been + deprecated since January of this year.) This recommendation + will cause older clients and relays to give a warning on startup, + or when they download a consensus directory. + Closes ticket 32696. diff --git a/src/feature/dirauth/dirvote.h b/src/feature/dirauth/dirvote.h index cf70e1184..1b1c9f2cc 100644 --- a/src/feature/dirauth/dirvote.h +++ b/src/feature/dirauth/dirvote.h @@ -239,14 +239,14 @@ STATIC microdesc_t *dirvote_create_microdescriptor(const routerinfo_t *ri, * Recommending a new protocol causes old tor versions to log a warning. */ #define DIRVOTE_RECOMMEND_RELAY_PROTO \ - "Cons=1-2 Desc=1-2 DirCache=1 HSDir=1 HSIntro=3 HSRend=1 " \ - "Link=4 Microdesc=1-2 Relay=2" + "Cons=1-2 Desc=1-2 DirCache=2 HSDir=2 HSIntro=4 HSRend=2 " \ + "Link=5 LinkAuth=3 Microdesc=1-2 Relay=2" /** The recommended client protocols for this authority's votes. * Recommending a new protocol causes old tor versions to log a warning. */ #define DIRVOTE_RECOMMEND_CLIENT_PROTO \ - "Cons=1-2 Desc=1-2 DirCache=1 HSDir=1 HSIntro=3 HSRend=1 " \ - "Link=4 Microdesc=1-2 Relay=2" + "Cons=1-2 Desc=1-2 DirCache=2 HSDir=2 HSIntro=4 HSRend=2 " \ + "Link=5 LinkAuth=3 Microdesc=1-2 Relay=2"

/** The required relay protocols for this authority's votes. * WARNING: Requiring a new protocol causes old tor versions to shut down.