From 7c2e7bcc41ad984c7834e025d3a437ef337fae74 Mon Sep 17 00:00:00 2001
From: Werner Koch <wk@gnupg.org>
Date: Tue, 13 May 2025 09:56:59 +0200
Subject: [PATCH] agent: We should use a macro for the keygrip len in new code.

* agent/divert-scd.c (agent_card_ecc_kem): Use KEYGRIP_LEN constant.
---
 agent/divert-scd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/agent/divert-scd.c b/agent/divert-scd.c
index 0172aac04..1e5de4671 100644
--- a/agent/divert-scd.c
+++ b/agent/divert-scd.c
@@ -507,9 +507,9 @@ agent_card_ecc_kem (ctrl_t ctrl, const unsigned char *ecc_ct,
   char *ecdh = NULL;
   size_t len;
   int rc;
-  char hexgrip[41];
+  char hexgrip[KEYGRIP_LEN*2+1];
 
-  bin2hex (ctrl->keygrip, 20, hexgrip);
+  bin2hex (ctrl->keygrip, KEYGRIP_LEN, hexgrip);
   rc = agent_card_pkdecrypt (ctrl, hexgrip, getpin_cb, ctrl, NULL,
                              ecc_ct, ecc_point_len, &ecdh, &len, NULL);
   if (rc)