[tcpm] [Errata Verified] RFC5925 (5672)
RFC Errata System <rfc-editor@rfc-editor.org> Wed, 04 March 2020 10:23 UTC
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Date: Wed, 04 Mar 2020 02:23:08 -0800
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Subject: [tcpm] [Errata Verified] RFC5925 (5672)
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The following errata report has been verified for RFC5925, "The TCP Authentication Option". -------------------------------------- You may review the report below and at: https://www.rfc-editor.org/errata/eid5672 -------------------------------------- Status: Verified Type: Technical Reported by: Joe Touch <touch@strayalpha.com> Date Reported: 2019-03-24 Verified by: Mirja Kühlewind (IESG) Section: 6.2 Original Text ------------- /* set the flag when the SEG.SEQ first rolls over */ if ((RCV.SNE_FLAG == 0) && (RCV.PREV_SEQ > 0x7fff) && (SEG.SEQ < 0x7fff)) { RCV.SNE = RCV.SNE + 1; RCV.SNE_FLAG = 1; } /* decide which SNE to use after incremented */ if ((RCV.SNE_FLAG == 1) && (SEG.SEQ > 0x7fff)) { SNE = RCV.SNE - 1; # use the pre-increment value } else { SNE = RCV.SNE; # use the current value } /* reset the flag in the *middle* of the window */ if ((RCV.PREV_SEQ < 0x7fff) && (SEG.SEQ > 0x7fff)) { RCV.SNE_FLAG = 0; } /* save the current SEQ for the next time through the code */ RCV.PREV_SEQ = SEG.SEQ; Corrected Text -------------- /* set the flag when the SEG.SEQ first rolls over */ if ((RCV.SNE_FLAG == 0) && (RCV.PREV_SEQ > 0x7fffffff) && (SEG.SEQ < 0x7fffffff)) { RCV.SNE = RCV.SNE + 1; RCV.SNE_FLAG = 1; } /* decide which SNE to use after incremented */ if ((RCV.SNE_FLAG == 1) && (SEG.SEQ > 0x7fffffff)) { SNE = RCV.SNE - 1; # use the pre-increment value } else { SNE = RCV.SNE; # use the current value } /* reset the flag in the *middle* of the window */ if ((RCV.PREV_SEQ < 0x7fffffff) && (SEG.SEQ > 0x7fffffff)) { RCV.SNE_FLAG = 0; } /* save the current SEQ for the next time through the code */ RCV.PREV_SEQ = SEG.SEQ; Notes ----- The SNE values are 32 bits; the current pseudocode used 16-bit masks (0x7fff) instead of their 32-bit equivalent (0x7fffffff). This error was first noted by Tero Kivinen <kivinen@iki.fi>. -------------------------------------- RFC5925 (draft-ietf-tcpm-tcp-auth-opt-11) -------------------------------------- Title : The TCP Authentication Option Publication Date : June 2010 Author(s) : J. Touch, A. Mankin, R. Bonica Category : PROPOSED STANDARD Source : TCP Maintenance and Minor Extensions Area : Transport Stream : IETF Verifying Party : IESG
- [tcpm] [Errata Verified] RFC5925 (5672) RFC Errata System