diff --git a/create_private_key.go b/create_private_key.go
index c13889f..3e0c976 100644
--- a/create_private_key.go
+++ b/create_private_key.go
@@ -47,7 +47,7 @@ func CreatePrivateKey(args []string) error {
 	if *flagOutput == "stdout" {
 		out = os.Stdout
 	} else {
-		out, err = os.OpenFile(*flagOutput, os.O_WRONLY|os.O_CREATE|os.O_EXCL|os.O_SYNC, 0700)
+		out, err = os.OpenFile(*flagOutput, os.O_WRONLY|os.O_CREATE|os.O_EXCL|os.O_SYNC, 0600)
 		if err != nil {
 			return err
 		}
diff --git a/io.go b/io.go
index 0809259..ab8611f 100644
--- a/io.go
+++ b/io.go
@@ -15,7 +15,7 @@ func openOutput(path string) (io.WriteCloser, error) {
 	if path == "stdout" {
 		out = os.Stdout
 	} else {
-		out, err = os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_EXCL|os.O_SYNC, 0700)
+		out, err = os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_EXCL|os.O_SYNC, 0640)
 		if err != nil {
 			return nil, err
 		}