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| author | Taylor Yu <catalyst@torproject.org> | 2018-07-20 16:56:29 -0500 |
|---|---|---|
| committer | Taylor Yu <catalyst@torproject.org> | 2018-07-20 16:56:29 -0500 |
| commit | 1f0d38a7632b1861039d040089b245eba24e3318 (patch) | |
| tree | 030336f37f8d27f0105eb526ec77345ec3f1b856 /tor-spec.txt | |
| parent | d5a0678ec727dfeb37127c9893903e9d6799e883 (diff) | |
| download | torspec-1f0d38a7632b1861039d040089b245eba24e3318.tar.gz torspec-1f0d38a7632b1861039d040089b245eba24e3318.zip | |
Clarify all-zeroes relay fingerprint behavior
The all-zeroes special case for EXTEND/EXTEND2 cells is for relay
fingerprints/public keys, not cell crypto digests.
Closes ticket 26893.
Diffstat (limited to 'tor-spec.txt')
| -rw-r--r-- | tor-spec.txt | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/tor-spec.txt b/tor-spec.txt index b88befe..02bb9ae 100644 --- a/tor-spec.txt +++ b/tor-spec.txt @@ -1264,11 +1264,12 @@ see tor-design.pdf. cell to the next onion router, with the enclosed HLEN, HTYPE, and HDATA as its payload. - As special cases, if the extend cell includes a digest of - all zeroes, or asks to extend back to the relay that sent the extend - cell, the circuit will fail and be torn down. The initiating onion - router chooses some circID not yet used on the connection between the - two onion routers. (But see section 5.1.1 above, concerning choosing + As special cases, if the EXTEND/EXTEND2 cell includes a legacy + identity, identity fingerprint, or Ed25519 identity of all zeroes, or + asks to extend back to the relay that sent the extend cell, the + circuit will fail and be torn down. The initiating onion router + chooses some circID not yet used on the connection between the two + onion routers. (But see section 5.1.1 above, concerning choosing circIDs.) When an onion router receives a CREATE/CREATE2 cell, if it already has a |