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        RFC 9955

        Title:      Hybrid Signature Spectrums
        Author:     N. Bindel,
                    B. Hale,
                    D. Connolly,
                    F. Driscoll
        Status:     Informational
        Stream:     IETF
        Date:       July 2026
        Mailbox:    [email protected],
                    [email protected],
                    [email protected],
                    [email protected]
        Pages:      23


        I-D Tag:    draft-ietf-pquip-hybrid-signature-spectrums-07

        URL:        https://www.rfc-editor.org/info/rfc9955

        DOI:        10.17487/RFC9955

This document describes classification of design goals and security 
considerations for hybrid digital signature schemes, including proof 
composability, non-separability of the component signatures given a hybrid 
signature, backwards and forwards compatibility, hybrid generality, and 
Simultaneous Verification (SV).

This document is a product of the Post-Quantum Use In Protocols Working Group 
of the IETF.

INFORMATIONAL: This memo provides information for the Internet community.
It does not specify an Internet standard of any kind. Distribution of
this memo is unlimited.

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