1 files changed, 11 insertions, 0 deletions
diff --git a/apps/dgst.c b/apps/dgst.c
index 4bf20f3..d158a0c 100644
--- a/apps/dgst.c
+++ b/apps/dgst.c
@@ -235,6 +235,8 @@ int dgst_main(int argc, char **argv)
     }
 
     if (keyfile != NULL) {
+        int type;
+
         if (want_pub)
             sigkey = load_pubkey(keyfile, keyform, 0, NULL, e, "key file");
         else
@@ -245,6 +247,15 @@ int dgst_main(int argc, char **argv)
              */
             goto end;
         }
+        type = EVP_PKEY_id(sigkey);
+        if (type == EVP_PKEY_ED25519 || type == EVP_PKEY_ED448) {
+            /*
+             * We implement PureEdDSA for these which doesn't have a separate
+             * digest, and only supports one shot.
+             */
+            BIO_printf(bio_err, "Key type not supported for this operation\n");
+            goto end;
+        }
     }
 
     if (mac_name != NULL) {