1 files changed, 5 insertions, 0 deletions
diff --git a/crypto/openssl/apps/dgst.c b/crypto/openssl/apps/dgst.c
index 95e5fa3..26afcd7 100644
--- a/crypto/openssl/apps/dgst.c
+++ b/crypto/openssl/apps/dgst.c
@@ -243,6 +243,11 @@ int MAIN(int argc, char **argv)
         argv++;
     }
 
+    if (keyfile != NULL && argc > 1) {
+        BIO_printf(bio_err, "Can only sign or verify one file\n");
+        goto end;
+    }
+
     if (do_verify && !sigfile) {
         BIO_printf(bio_err,
                    "No signature to verify: use the -signature option\n");