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RFC 9496: The ristretto255 and decaf448 Groups

In plain English — editorial summary, not part of the RFC

This memo specifies two prime-order groups, ristretto255 and decaf448, suitable for safely implementing higher-level and complex cryptographic protocols. The ristretto255 group can be implemented using Curve25519, allowing existing Curve25519 implementations to be reused and extended to provide a prime-order group. Likewise, the decaf448 group can be implemented using edwards448. This document is a product of the Crypto Forum Research Group (CFRG) in the IRTF.

Document record

Document ID
RFC9496
Published
December 2023
Authors
H. de Valence; J. Grigg; M. Hamburg; I. Lovecruft; G. Tankersley; F. Valsorda
Status
INFORMATIONAL
Stream
IRTF
Area
—
Pages
27
Also known as
—

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

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