From 05afcd706ea0550cac41ead989cae929d116288c Mon Sep 17 00:00:00 2001
From: Pol Henarejos <pol.henarejos@cttc.es>
Date: Thu, 30 Mar 2023 00:37:31 +0200
Subject: [PATCH] Fix OATH calculation result when called multiple times.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
---
 src/fido/oath.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/fido/oath.c b/src/fido/oath.c
index 901df2b..19bd8be 100644
--- a/src/fido/oath.c
+++ b/src/fido/oath.c
@@ -336,6 +336,7 @@ int calculate_oath(uint8_t truncate,
     if (r != 0) {
         return CCID_EXEC_ERROR;
     }
+    res_APDU_size = 0;
     if (truncate == 0x01) {
         res_APDU[res_APDU_size++] = 4 + 1;
         res_APDU[res_APDU_size++] = key[1];