[tor-commits] [torspec/master] Clarify ed25519 signatures on routerdescs.

[nickm at torproject.org]

commit 01122c5bd7d2f0fbb45991dcdddede30a358130f
Author: Nick Mathewson <nickm at torproject.org>
Date:   Thu Sep 17 10:48:45 2020 -0400

    Clarify ed25519 signatures on routerdescs.
---
 dir-spec.txt | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/dir-spec.txt b/dir-spec.txt
index 2314974..74493ad 100644
--- a/dir-spec.txt
+++ b/dir-spec.txt
@@ -627,12 +627,13 @@
 
        It MUST be the next-to-last element in the descriptor, appearing
        immediately before the RSA signature. It MUST contain an Ed25519
-       signature of a SHA256 digest of the entire document, from the
-       first character up to and including the first space after the
-       "router-sig-ed25519" string, prefixed with the string "Tor
-       router descriptor signature v1".  Its format is:
+       signature of a SHA256 digest of the entire document. This digest is
+       taken from the first character up to and including the first space
+       after the "router-sig-ed25519" string. Before computing the digest,
+       the string "Tor router descriptor signature v1" is prefixed to the
+       document.
 
-       The signature is encoded in Base64 with terminating =s removed.
+       The signature is encoded in Base64, with terminating =s removed.
 
        The signing key in the identity-ed25519 certificate MUST
        be the one used to sign the document.