[CFRG] [Errata Verified] RFC8032 (6348)

RFC Errata System <rfc-editor@rfc-editor.org> Tue, 27 January 2026 17:44 UTC

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Subject: [CFRG] [Errata Verified] RFC8032 (6348)
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The following errata report has been verified for RFC8032,
"Edwards-Curve Digital Signature Algorithm (EdDSA)". 

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid6348

--------------------------------------
Status: Verified
Type: Technical

Reported by: David Benjamin <davidben@chromium.org>
Date Reported: 2020-12-02
Verified by: Nick Sullivan (IRSG)

Section: 3.4

Original Text
-------------
Compute h = H(ENC(R) || ENC(A) || M), and check the group
equation [2^c * S] B = 2^c * R + [2^c * h] A in E.

Corrected Text
--------------
Compute h = H(ENC(R) || ENC(A) || M), and check the group
equation [2^c * S] B = [2^c] R + [2^c * h] A in E.

Notes
-----
Section 2 uses a separate notation, [n]X, for point multiplication, so this operation should use the brackets.

--VERIFIER NOTE--
Verified. Section 2 defines [n]X notation for point multiplication. The term 2^c * R in Section 3.4 should use brackets [2^c] R for consistency.

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RFC8032 (draft-irtf-cfrg-eddsa-08)
--------------------------------------
Title               : Edwards-Curve Digital Signature Algorithm (EdDSA)
Publication Date    : January 2017
Author(s)           : S. Josefsson, I. Liusvaara
Category            : INFORMATIONAL
Source              : Crypto Forum Research Group
Stream              : IRTF
Verifying Party     : IRSG