1 files changed, 38 insertions, 0 deletions
diff --git a/lib/gitlab/auth/u2f_webauthn_converter.rb b/lib/gitlab/auth/u2f_webauthn_converter.rb
new file mode 100644
index 00000000000..f85b2248aeb
--- /dev/null
+++ b/lib/gitlab/auth/u2f_webauthn_converter.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Auth
+    class U2fWebauthnConverter
+      def initialize(u2f_registration)
+        @u2f_registration = u2f_registration
+      end
+
+      def convert
+        now = Time.current
+
+        converted_credential = WebAuthn::U2fMigrator.new(
+          app_id: Gitlab.config.gitlab.url,
+          certificate: u2f_registration.certificate,
+          key_handle: u2f_registration.key_handle,
+          public_key: u2f_registration.public_key,
+          counter: u2f_registration.counter
+        ).credential
+
+        {
+          credential_xid: Base64.strict_encode64(converted_credential.id),
+          public_key: Base64.strict_encode64(converted_credential.public_key),
+          counter: u2f_registration.counter || 0,
+          name: u2f_registration.name || '',
+          user_id: u2f_registration.user_id,
+          u2f_registration_id: u2f_registration.id,
+          created_at: now,
+          updated_at: now
+        }
+      end
+
+      private
+
+      attr_reader :u2f_registration
+    end
+  end
+end