1 files changed, 7 insertions, 0 deletions
diff --git a/ecdsa.c b/ecdsa.c
index 66612e4..fc8ea1f 100644
--- a/ecdsa.c
+++ b/ecdsa.c
@@ -8,6 +8,13 @@
 
 #ifdef DROPBEAR_ECDSA
 
+int signkey_is_ecdsa(enum signkey_type type)
+{
+	return type == DROPBEAR_SIGNKEY_ECDSA_NISTP256
+		|| type == DROPBEAR_SIGNKEY_ECDSA_NISTP384
+		|| type == DROPBEAR_SIGNKEY_ECDSA_NISTP521;
+}
+
 enum signkey_type ecdsa_signkey_type(ecc_key * key) {
 #ifdef DROPBEAR_ECC_256
 	if (key->dp == ecc_curve_nistp256.dp) {