[tor-commits] [torspec] 02/14: Use proper names for KP_hsc_desc_enc

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nickm pushed a commit to branch main
in repository torspec.

commit 7b3d7a40a0ac8f59b9f6d79205dfc53de4168f0c
Author: Ian Jackson <ijackson at chiark.greenend.org.uk>
AuthorDate: Mon Feb 6 12:51:41 2023 +0000

    Use proper names for KP_hsc_desc_enc
---
 rend-spec-v3.txt | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/rend-spec-v3.txt b/rend-spec-v3.txt
index afc2a46..805e0d9 100644
--- a/rend-spec-v3.txt
+++ b/rend-spec-v3.txt
@@ -1231,19 +1231,17 @@ Table of contents:
 
       When client authorization is enabled, each "auth-client" line contains
       the descriptor cookie encrypted to each individual client. We assume that
-      each authorized client possesses a pre-shared x25519 keypair which is
-      used to decrypt the descriptor cookie.
+      each authorized client possesses a pre-shared x25519 keypair
+      KS/KP_hsc_desc_enc which is used to decrypt the descriptor cookie.
 
       We now describe the descriptor cookie encryption scheme. Here are the
       relevant keys:
 
-          client_x = private x25519 key of authorized client
-          client_X = public x25519 key of authorized client
           descriptor_cookie = descriptor cookie used to encrypt the descriptor
 
       And here is what the hidden service computes:
 
-          SECRET_SEED = x25519(KS_hs_desc_ephem, client_X)
+          SECRET_SEED = x25519(KS_hs_desc_ephem, KP_hsc_desc_enc)
           KEYS = KDF(N_hs_subcred | SECRET_SEED, 40)
           CLIENT-ID = fist 8 bytes of KEYS
           COOKIE-KEY = last 32 bytes of KEYS

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