CBOR Object Signing and Encryption Key Thumbprint
RFC 9679, “CBOR Object Signing and Encryption Key Thumbprint”, is a Proposed Standard document published in December 2024 by K. Isobe, H. Tschofenig, O. Steele. The canonical text is published by the RFC Editor.
Abstract
This specification defines a method for computing a hash value over a CBOR Object Signing and Encryption (COSE) Key. It specifies which fields within the COSE Key structure are included in the cryptographic hash computation, the process for creating a canonical representation of these fields, and how to hash the resulting byte sequence. The resulting hash value, referred to as a "thumbprint", can be used to identify or select the corresponding key.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9679 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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