This Recommendation | International Standard specifies the framework, concepts, and methodology for securing JPEG 2000 codestreams. The scope of this Recommendation | International Standard is to define: 1) a normative codestream syntax containing information for interpreting secure image data; 2) a normative process for registering JPSEC tools with a registration authority delivering a unique identifier; 3) informative examples of JPSEC tools in typical use cases; 4) informative guidelines on how to implement security services and related metadata. The scope of this Recommendation | International Standard is not to describe specific secure imaging applications or to limit secure imaging to specific techniques, but to create a framework that enables future extensions as secure imaging techniques evolve.