1 files changed, 29 insertions, 0 deletions
diff --git a/cmd/sigsum-debug/key/private/private.go b/cmd/sigsum-debug/key/private/private.go
new file mode 100644
index 0000000..3928f56
--- /dev/null
+++ b/cmd/sigsum-debug/key/private/private.go
@@ -0,0 +1,29 @@
+package private
+
+import (
+	"crypto/ed25519"
+	"crypto/rand"
+	"fmt"
+	"strings"
+
+	"git.sigsum.org/sigsum-go/pkg/hex"
+)
+
+const privateKeySize = 64
+
+func Main(args []string) error {
+	if len(args) != 0 {
+		return fmt.Errorf("trailing arguments: %s", strings.Join(args, ", "))
+	}
+
+	_, priv, err := ed25519.GenerateKey(rand.Reader)
+	if err != nil {
+		return fmt.Errorf("generate key: %w", err)
+	}
+	if len(priv) != privateKeySize {
+		return fmt.Errorf("invalid key size %d", len(priv))
+	}
+
+	fmt.Printf("%s\n", hex.Serialize(priv[:]))
+	return nil
+}