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| author | Nick Mathewson <nickm@torproject.org> | 2023-11-08 14:48:11 -0500 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2023-11-09 09:12:48 -0500 |
| commit | cae2c281238e798d3a2614f241e888e92b53ea4e (patch) | |
| tree | e2b0e0d2463b62e029099547624d4d703912176b /spec/tor-spec/relay-cells.md | |
| parent | 919d193f1c85aef1387c3c3498b23b886abb7489 (diff) | |
| download | torspec-cae2c281238e798d3a2614f241e888e92b53ea4e.tar.gz torspec-cae2c281238e798d3a2614f241e888e92b53ea4e.zip | |
Finish revising cell-packet-format.
Diffstat (limited to 'spec/tor-spec/relay-cells.md')
| -rw-r--r-- | spec/tor-spec/relay-cells.md | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/spec/tor-spec/relay-cells.md b/spec/tor-spec/relay-cells.md index add1f42..9f1abb2 100644 --- a/spec/tor-spec/relay-cells.md +++ b/spec/tor-spec/relay-cells.md @@ -104,11 +104,12 @@ the unencrypted payload is padded with padding bytes. Implementations handle padding bytes of unencrypted relay cells as they do padding bytes for other cell types; see [Cell Packet format](./cell-packet-format.md#cell-packet-format). -The 'Padding' field is used to make relay cell contents unpredictable, to +<span id="relay-cell-padding">The +'Padding' field is used to make relay cell contents unpredictable, to avoid certain attacks (see proposal 289 for rationale). Implementations SHOULD fill this field with four zero-valued bytes, followed by as many random bytes as will fit. (If there are fewer than 4 bytes for padding, -then they should all be filled with zero. +then they should all be filled with zero.</span> Implementations MUST NOT rely on the contents of the 'Padding' field. |