[PATCH] scd:piv: Fix auth_adm_key.

[Heiko Schaefer]

* scd/app-piv.c (auth_adm_key): Fix wrong byte in command.
--

The second command sent contained an incorrect value (compare "Special
Publication 800-73-4", A.2 "Mutual Authentication of Client Application
and Card Application").

Authentication against the YubiKey PIV application works without this
patch.

However, with other PIV implementations (like
https://github.com/arekinath/PivApplet and
https://github.com/canokeys/canokey-core), authentication only succeeds
with this patch.
---
 scd/app-piv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scd/app-piv.c b/scd/app-piv.c
index a51ac31ec..67c00a108 100644
--- a/scd/app-piv.c
+++ b/scd/app-piv.c
@@ -928,7 +928,7 @@ auth_adm_key (app_t app, const unsigned char *value, size_t valuelen)
   tmpl[12] = 0x81;
   tmpl[13] = 8;
   gcry_create_nonce (tmpl+14, 8);
-  tmpl[22] = 0x80;
+  tmpl[22] = 0x82;
   tmpl[23] = 0;
   tmpllen = 24;
   xfree (outdata);
-- 
2.41.0