added new-namespace tool

1 files changed, 56 insertions, 0 deletions

diff --git a/types/cmd/new-namespace/main.go b/types/cmd/new-namespace/main.go
new file mode 100644
index 0000000..e338d7c
--- /dev/null
+++ b/types/cmd/new-namespace/main.go
@@ -0,0 +1,56 @@
+// Package main outputs the private and public parts of a new namespace
+package main
+
+import (
+	"flag"
+	"fmt"
+
+	"crypto/ed25519"
+	"crypto/rand"
+	"encoding/base64"
+
+	"github.com/golang/glog"
+	"github.com/system-transparency/stfe/types"
+)
+
+var (
+	format = flag.String("format", string(types.NamespaceFormatEd25519V1), "namespace format")
+)
+
+func main() {
+	flag.Parse()
+	defer glog.Flush()
+
+	switch *format {
+	case string(types.NamespaceFormatEd25519V1):
+		glog.Infof("generating new ed25519_v1 namespace")
+		sk, vk, namespace, err := genEd25519V1Namespace()
+		if err != nil {
+			glog.Errorf("genEd25519V1Namespace: %v", err)
+			break
+		}
+		fmt.Printf("sk: %s\n", base64.StdEncoding.EncodeToString(sk))
+		fmt.Printf("vk: %s\n", base64.StdEncoding.EncodeToString(vk))
+		fmt.Printf("ed25519_v1: %s\n", base64.StdEncoding.EncodeToString(namespace))
+	default:
+		glog.Errorf("unsupported namespace format: %s", format)
+	}
+}
+
+// genEd25519V1Namespace generates an Ed25519 secret key, verification key, and
+// serialized ed25519_v1 namespace.
+func genEd25519V1Namespace() ([]byte, []byte, []byte, error) {
+	vk, sk, err := ed25519.GenerateKey(rand.Reader)
+	if err != nil {
+		return nil, nil, nil, fmt.Errorf("ed25519.GenerateKey: %v", err)
+	}
+	namespace, err := types.NewNamespaceEd25519V1(vk[:])
+	if err != nil {
+		return nil, nil, nil, fmt.Errorf("types.NewNamespaceEd25519V1: %v", err)
+	}
+	serialized, err := types.Marshal(*namespace)
+	if err != nil {
+		fmt.Errorf("types.Marshal: %v", err)
+	}
+	return sk, vk, serialized, nil
+}