JavaScript Object Notation (JSON) is a text format for the serialization of structured data described in RFC 4627. The JSON format is often used for serializing and transmitting structured data over a network connection. With the increased usage of JSON in protocols in the IETF and elsewhere, there is now a desire to offer security services for JSON with encryption, digital signatures, and message authentication codes (MACs). Different proposals for providing such security services have already been defined and implemented. This Working Group will standardize the mechanism for integrity protection (signature and MAC) and encryption as well as the format for keys and algorithm identifiers to support interoperability of security services for protocols that use JSON. The Working Group will base its work on well-known message security primitives (e.g., CMS), and will solicit input from the rest of the IETF Security Area to be sure that the security functionality in the JSON format is sound. As JSON adoption expands, the different applications utilizing JSON security services will grow and this leads to the need to support different requirements. The WG will develop a generic syntax that can be used by applications to secure JSON-data, but it will be up to the application to fully specify the use of the WG's documents much the same way S/MIME is the application of CMS to MIME-based media types. This group is chartered to work on the following deliverables: (1) A Standards Track document or documents representing integrity-protected data using JSON-based data structures, including (but not limited to) JSON data structures. "Integrity protection" includes public-key digital signatures as well as symmetric-key MACs. (2) A Standards Track document or documents representing encrypted data using JSON-based data structures, including (but not limited to) JSON data structures. (3) A Standards Track document specifying how to encode public keys as JSON- structured objects. (4) A Standards Track document specifying algorithms and algorithm identifiers for the previous three documents. (5) A Standards Track document specifying how to encode private and symmetric keys as JSON-structured objects. This document will build upon the concepts and structures in (3). (6) A Standards Track document specifying a means of protecting private and symmetric keys via encryption. This document will build upon the concepts and structures in (2) and (5). This document may register additional algorithms in registries defined by (4). (7) An Informational document detailing Use Cases and Requirements for JSON Object Signing and Encryption (JOSE). (8) An Informational document that tells an application what needs to be specified in order to implement JOSE. One or more of these goals may be combined into a single document, in which case the concrete milestones for these goals will be satisfied by the consolidated document(s).