CBOR Algoritms for Object Signing and Encryption (COSE)

Document Type Replaced Internet-Draft (individual)
Author Jim Schaad
Last updated 2018-12-26
Replaced by draft-ietf-cose-rfc8152bis-algs
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Concise Binary Object Representation (CBOR) is a data format designed for small code size and small message size. There is a need for the ability to have basic security services defined for this data format. This document defines the CBOR Object Signing and Encryption (COSE) protocol. This specification describes how to create and process signatures, message authentication codes, and encryption using CBOR for serialization. COSE additionally describes how to represent cryptographic keys using CBOR. In this specification the conventions for the use of a number of cryptographic algorithms with COSE. The details of the structure of COSE are defined in [I-D.schaad-cose-rfc8152bis-struct]. This document along with [I-D.schaad-cose-rfc8152bis-struct] obsoletes RFC8152.


Jim Schaad (ietf@augustcellars.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)