Add methods to add data to the template data.

x509util/options.go

@@ -24,10 +24,6 @@ func (o *Options) apply(opts []Option) (*Options, error) {
 	return o, nil
 }
 
-// TemplateData is an alias for map[string]interface{}. It represents the data
-// passed to the templates.
-type TemplateData map[string]interface{}
-
 // Option is the type used as a variadic argument in NewCertificate.
 type Option func(o *Options) error
 

x509util/templates.go

@@ -4,8 +4,33 @@ const (
 	UserKey    = "User"
 	SubjectKey = "Subject"
 	SANsKey    = "SANs"
+	TokenKey   = "Token"
 )
 
+// TemplateData is an alias for map[string]interface{}. It represents the data
+// passed to the templates.
+type TemplateData map[string]interface{}
+
+func (t TemplateData) Set(key string, v interface{}) {
+	t[key] = v
+}
+
+func (t TemplateData) SetUserData(v Subject) {
+	t[UserKey] = v
+}
+
+func (t TemplateData) SetSubject(v Subject) {
+	t[SubjectKey] = v
+}
+
+func (t TemplateData) SetSANs(sans []string) {
+	t[SANsKey] = CreateSANs(sans)
+}
+
+func (t TemplateData) SetToken(v interface{}) {
+	t[TokenKey] = v
+}
+
 const DefaultLeafTemplate = `{
 	"subject": {{ toJson .Subject }},
 	"sans": {{ toJson .SANs }},