From 68071825c23ce8a36b5287b884b3cbcd968e6889 Mon Sep 17 00:00:00 2001
From: Pol Henarejos <pol.henarejos@cttc.es>
Date: Mon, 13 Feb 2023 23:24:04 +0100
Subject: [PATCH] Fix EC public key computation when importing.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
---
 src/hsm/kek.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/hsm/kek.c b/src/hsm/kek.c
index f7a46cf..2b0e7c0 100644
--- a/src/hsm/kek.c
+++ b/src/hsm/kek.c
@@ -589,6 +589,12 @@ int dkek_decode_key(uint8_t id, void *key_ctx, const uint8_t *in, size_t in_len,
             mbedtls_ecdsa_free(ecdsa);
             return CCID_EXEC_ERROR;
         }
+
+        r = mbedtls_ecp_mul(&ecdsa->grp, &ecdsa->Q, &ecdsa->d, &ecdsa->grp.G, random_gen, NULL);
+        if (r != 0) {
+            mbedtls_ecdsa_free(ecdsa);
+            return CCID_EXEC_ERROR;
+        }
     }
     else if (key_type == 15) {
         memcpy(key_ctx, kb+ofs, key_size);