From 5a96db65e582889fc4383443934495651c969fd6 Mon Sep 17 00:00:00 2001
From: Werner Koch <wk@gnupg.org>
Date: Fri, 22 Mar 2019 12:29:02 +0100
Subject: doc: Add a spec comment to app-piv.c

--
---
 scd/app-piv.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scd/app-piv.c b/scd/app-piv.c
index 5748c70b8..41fd7b7c5 100644
--- a/scd/app-piv.c
+++ b/scd/app-piv.c
@@ -19,6 +19,7 @@
 
 /* Some notes:
  * - Specs for PIV are at http://dx.doi.org/10.6028/NIST.SP.800-73-4
+ * - https://developers.yubico.com/PIV/Introduction/PIV_attestation.html
  *
  * - Access control matrix:
  *   | Action       | 9B  | PIN | PUK |                              |
-- 
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