Internet-Draft draft-ietf-cose-split-signing-algs-01.txt is now available. It
is a work item of the CBOR Object Signing and Encryption (COSE) WG of the
IETF.
Title: Split Signing Algorithms for COSE
Authors: Emil Lundberg
Michael B. Jones
Name: draft-ietf-cose-split-signing-algs-01.txt
Pages: 24
Dates: 2026-07-05
Abstract:
This specification defines COSE algorithm identifiers for negotiating
how to split a signature algorithm between two cooperating parties.
Typically the first party hashes the data to be signed and the second
party finishes the signature over the hashed data. This is a common
technique, useful for example when the signing private key is held in
a smart card or similar hardware component with limited processing
power and communication bandwidth. The resulting signatures are
identical in structure to those computed by a single party, and can
be verified using the same verification algorithm without additional
steps to preprocess the signed data.
The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-cose-split-signing-algs/
There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-cose-split-signing-algs-01.html
A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-cose-split-signing-algs-01
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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