[tor-commits] [torspec/master] HSv3: Include HS public identity key to the client auth KDF.

[nickm at torproject.org]

commit 2fdec5ae0583d23f98bd723810084410df4939b8
Author: George Kadianakis <desnacked at riseup.net>
Date:   Thu Sep 6 13:58:39 2018 +0300

    HSv3: Include HS public identity key to the client auth KDF.
---
 rend-spec-v3.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rend-spec-v3.txt b/rend-spec-v3.txt
index 1718b22..03b45d9 100644
--- a/rend-spec-v3.txt
+++ b/rend-spec-v3.txt
@@ -1214,7 +1214,7 @@ Table of contents:
       And here is what the hidden service computes:
 
           SECRET_SEED = x25519(hs_y, client_X)
-          KEYS = KDF(SECRET_SEED, 40)
+          KEYS = KDF(subcredential | SECRET_SEED, 40)
           CLIENT-ID = fist 8 bytes of KEYS
           COOKIE-KEY = last 32 bytes of KEYS