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| author | Nick Mathewson <nickm@torproject.org> | 2023-06-14 13:53:36 -0400 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2023-06-14 13:53:36 -0400 |
| commit | 4b18bb2b16f301b5539e0b68f3406fc4705b4385 (patch) | |
| tree | cb7f6313fe14fb434645bb3b072abdf2f8f3a6a5 /rend-spec-v3.txt | |
| parent | a14e2981efc6bf6ee49213189ca77118ca8c5216 (diff) | |
| download | torspec-4b18bb2b16f301b5539e0b68f3406fc4705b4385.tar.gz torspec-4b18bb2b16f301b5539e0b68f3406fc4705b4385.zip | |
rend-spec: document MAC_KEY_LEN=32.
We use this constant in various places throughout the document
but we never say what it is.
Diffstat (limited to 'rend-spec-v3.txt')
| -rw-r--r-- | rend-spec-v3.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/rend-spec-v3.txt b/rend-spec-v3.txt index 4a12343..fe82ad4 100644 --- a/rend-spec-v3.txt +++ b/rend-spec-v3.txt @@ -216,6 +216,9 @@ Table of contents: * Instantiate MAC(key=k, message=m) with H(k_len | k | m), where k_len is htonll(len(k)). + When we need a particular MAC key length below, we choose + MAC_KEY_LEN=32 (256 bits). + For legacy purposes, we specify compatibility with older versions of the Tor introduction point and rendezvous point protocols. These used RSA1024, DH1024, AES128, and SHA1, as discussed in |