Fix a long-standing bug in ec_asn1_group2pkparameters()

Only check for the OPENSSL_EC_NAMED_CURVE being set to treat the curve
parameters as named curve parameters.

ok jsing

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/libcrypto/ec/ec_asn1.c b/src/lib/libcrypto/ec/ec_asn1.c
index c27257bdbb..3cc91fe4c1 100644
--- a/src/lib/libcrypto/ec/ec_asn1.c
+++ b/src/lib/libcrypto/ec/ec_asn1.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ec_asn1.c,v 1.65 2024/10/11 18:34:20 tb Exp $ */
+/* $OpenBSD: ec_asn1.c,v 1.66 2024/10/11 18:35:39 tb Exp $ */
 /*
  * Written by Nils Larsch for the OpenSSL project.
  */
@@ -803,7 +803,7 @@ ec_asn1_group2pkparameters(const EC_GROUP *group)
                 goto err;
         }
 
-        if (EC_GROUP_get_asn1_flag(group) != 0) {
+        if ((EC_GROUP_get_asn1_flag(group) & OPENSSL_EC_NAMED_CURVE) != 0) {
                 if ((nid = EC_GROUP_get_curve_name(group)) == NID_undef)
                         goto err;
                 if ((aobj = OBJ_nid2obj(nid)) == NULL)