[CFRG] [Technical Errata Reported] RFC7748 (7824)
RFC Errata System <rfc-editor@rfc-editor.org> Tue, 27 February 2024 11:50 UTC
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Subject: [CFRG] [Technical Errata Reported] RFC7748 (7824)
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The following errata report has been submitted for RFC7748, "Elliptic Curves for Security". -------------------------------------- You may review the report below and at: https://www.rfc-editor.org/errata/eid7824 -------------------------------------- Type: Technical Reported by: Jose Luis Amador Moreno <jamador@jtsec.es> Section: 5.2 Original Text ------------- Input scalar: 203d494428b8399352665ddca42f9de8fef600908e0d461cb021f8c5 38345dd77c3e4806e25f46d3315c44e0a5b4371282dd2c8d5be3095f Input scalar as a number (base 10): 633254335906970592779259481534862372382525155 252028961056404001332122152890562527156973881 968934311400345568203929409663925541994577184 Input u-coordinate: 0fbcc2f993cd56d3305b0b7d9e55d4c1a8fb5dbb52f8e9a1e9b6201b 165d015894e56c4d3570bee52fe205e28a78b91cdfbde71ce8d157db Input u-coordinate as a number (base 10): 622761797758325444462922068431234180649590390 024811299761625153767228042600197997696167956 134770744996690267634159427999832340166786063 Output u-coordinate: 884a02576239ff7a2f2f63b2db6a9ff37047ac13568e1e30fe63c4a7 ad1b3ee3a5700df34321d62077e63633c575c1c954514e99da7c179d Corrected Text -------------- Input scalar: 203d494428b8399352665ddca42f9de8fef600908e0d461cb021f8c5 38345dd77c3e4806e25f46d3315c44e0a5b4371282dd2c8d5be3095f Input scalar as a number (base 10): 633254335906970592779259481534862372382525155 252028961056404001332122152890562527156973881 968934311400345568203929409663925541994577184 Input u-coordinate: 1e37b1e6368991ebce5815bf6b567cedfec0d32246815a6707f02c4a 61247656f5df569f02613cc5bcedf7a924424ff063c9c0aff5b395ae Input u-coordinate as a number (base 10): 495683502945530038677307449626580741146441879 406119444019011021926629134928724388368946852 962833749157931574628774133988199037473470238 Output u-coordinate: d34142faca68f7a3ddf805fa39cc706d5ab3f5633ceff5e6462b775d ef45f33083461dcf821cc3f0f74a813277e6895a35d958feef79a5bf Notes ----- Regarding Section 5.2, X448, second vector, the given input u-coordinate is not part of a valid point on the Montgomery form of Curve448. I suggest replacing the point with a valid one: (2^447 + 100)*G See the SageMath code (permalink): https://web.archive.org/web/20240227114733/https://pastebin.com/yAuzvEJG Instructions: ------------- This erratum is currently posted as "Reported". (If it is spam, it will be removed shortly by the RFC Production Center.) Please use "Reply All" to discuss whether it should be verified or rejected. When a decision is reached, the verifying party will log in to change the status and edit the report, if necessary. -------------------------------------- RFC7748 (draft-irtf-cfrg-curves-11) -------------------------------------- Title : Elliptic Curves for Security Publication Date : January 2016 Author(s) : A. Langley, M. Hamburg, S. Turner Category : INFORMATIONAL Source : Crypto Forum Research Group Area : N/A Stream : IRTF Verifying Party : IRSG
- [CFRG] [Technical Errata Reported] RFC7748 (7824) RFC Errata System
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