From 2b2fc76121699e20c60dabb40e4507128731c0d5 Mon Sep 17 00:00:00 2001
From: Rasmus Dahlberg <rasmus.dahlberg@kau.se>
Date: Mon, 17 May 2021 22:04:33 +0200
Subject: started to refactor types and parsers

Work in progress.
---
 types/namespace.go | 91 ------------------------------------------------------
 1 file changed, 91 deletions(-)
 delete mode 100644 types/namespace.go

(limited to 'types/namespace.go')

diff --git a/types/namespace.go b/types/namespace.go
deleted file mode 100644
index 376ebcd..0000000
--- a/types/namespace.go
+++ /dev/null
@@ -1,91 +0,0 @@
-package types
-
-import (
-	"fmt"
-
-	"crypto/ed25519"
-
-	"github.com/google/certificate-transparency-go/tls"
-)
-
-// NamespaceFormat defines a particular namespace type that is versioend
-type NamespaceFormat tls.Enum
-
-const (
-	NamespaceFormatReserved  NamespaceFormat = 0
-	NamespaceFormatEd25519V1 NamespaceFormat = 1
-
-	NamespaceFingerprintSize = 32
-)
-
-// Namespace references a versioned namespace based on a given format specifier
-type Namespace struct {
-	Format    NamespaceFormat `tls:"maxval:65535"`
-	Ed25519V1 *Ed25519V1      `tls:"selector:Format,val:1"`
-}
-
-// Ed25519V1 uses an Ed25519 verification key as namespace.  Encoding,
-// signing, and verification operations are defined by RFC 8032.
-type Ed25519V1 struct {
-	Namespace [32]byte
-}
-
-func (f NamespaceFormat) String() string {
-	switch f {
-	case NamespaceFormatReserved:
-		return "reserved"
-	case NamespaceFormatEd25519V1:
-		return "ed25519_v1"
-	default:
-		return fmt.Sprintf("unknown NamespaceFormat: %d", f)
-	}
-}
-
-func (n Namespace) String() string {
-	switch n.Format {
-	case NamespaceFormatReserved:
-		return fmt.Sprintf("Format(%s)", n.Format)
-	case NamespaceFormatEd25519V1:
-		return fmt.Sprintf("Format(%s): %+v", n.Format, n.Ed25519V1)
-	default:
-		return fmt.Sprintf("unknown Namespace: %v", n.Format)
-	}
-}
-
-// Fingerprint returns a fixed-size namespace fingerprint that is unique.
-func (n *Namespace) Fingerprint() (*[NamespaceFingerprintSize]byte, error) {
-	switch n.Format {
-	case NamespaceFormatEd25519V1:
-		return &n.Ed25519V1.Namespace, nil
-	default:
-		return nil, fmt.Errorf("unsupported NamespaceFormat: %v", n.Format)
-	}
-}
-
-// Verify checks that signature is valid over message for this namespace
-func (ns *Namespace) Verify(message, signature []byte) error {
-	switch ns.Format {
-	case NamespaceFormatEd25519V1:
-		if !ed25519.Verify(ed25519.PublicKey(ns.Ed25519V1.Namespace[:]), message, signature) {
-			return fmt.Errorf("ed25519 signature verification failed")
-		}
-	default:
-		return fmt.Errorf("namespace not supported: %v", ns.Format)
-	}
-	return nil
-}
-
-// NewNamespaceEd25519V1 returns an new Ed25519V1 namespace based on a
-// verification key.
-func NewNamespaceEd25519V1(vk []byte) (*Namespace, error) {
-	if len(vk) != 32 {
-		return nil, fmt.Errorf("invalid verification key: must be 32 bytes")
-	}
-
-	var ed25519v1 Ed25519V1
-	copy(ed25519v1.Namespace[:], vk)
-	return &Namespace{
-		Format:    NamespaceFormatEd25519V1,
-		Ed25519V1: &ed25519v1,
-	}, nil
-}
-- 
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