[smime] [Errata Held for Document Update] RFC2631 (5954)
RFC Errata System <rfc-editor@rfc-editor.org> Mon, 13 January 2020 04:44 UTC
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Subject: [smime] [Errata Held for Document Update] RFC2631 (5954)
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The following errata report has been held for document update for RFC2631, "Diffie-Hellman Key Agreement Method". -------------------------------------- You may review the report below and at: https://www.rfc-editor.org/errata/eid5954 -------------------------------------- Status: Held for Document Update Type: Technical Reported by: Paul Janson <silversplash@gmx.com> Date Reported: 2020-01-02 Held by: Benjamin Kaduk (IESG) Section: 2.1.5. Original Text ------------- 1. Verify that y lies within the interval [2,p-1]. If it does not, the key is invalid. 2. Compute y^q mod p. If the result == 1, the key is valid. Otherwise the key is invalid. Corrected Text -------------- 1. Verify that y lies within the interval [2,p-1]. If it does not, the key is invalid. 2. Compute y^q mod p. If the result == 1, the key is valid. Otherwise the key is invalid. 3. Verify that y does not match g. Notes ----- Validating that (g == received y) needs to be an additional exclusion to the valid range [2,p-1]. If party 'a' accepts received public key 'yb' matching 'g', then ZZ matches public key 'ya'. i.e. if yb = 2, then xb = 1, therefore ZZ = ya^1 = ya -------------------------------------- RFC2631 (draft-ietf-smime-x942-07) -------------------------------------- Title : Diffie-Hellman Key Agreement Method Publication Date : June 1999 Author(s) : E. Rescorla Category : PROPOSED STANDARD Source : S/MIME Mail Security Area : Security Stream : IETF Verifying Party : IESG
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