1 files changed, 21 insertions, 0 deletions
diff --git a/metadata.go b/metadata.go
new file mode 100644
index 0000000..3875a63
--- /dev/null
+++ b/metadata.go
@@ -0,0 +1,21 @@
+package sym
+
+import "fmt"
+
+const magic = "\x80sym"
+
+type fileMetadata struct {
+	Version            int8
+	HashMetadata       hashMetadata
+	EncryptionMetadata encryptionMetadata
+}
+
+func (f *fileMetadata) validate() error {
+	if f.Version != 0 {
+		return fmt.Errorf("bad version")
+	}
+	if err := f.HashMetadata.validate(); err != nil {
+		return err
+	}
+	return f.EncryptionMetadata.validate()
+}