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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><b>Final Code Signing Working Group Meeting of 2022-03-23<o:p></o:p></b></p><p class=MsoNormal><b><span style='font-size:12.0pt'><o:p> </o:p></span></b></p><p class=MsoNormal><b>Attendees:</b> Atsushi Inaba (GlobalSign), Bruce Morton (Entrust), Dean Coclin (DigiCert), Ian McMillan (Microsoft), Inigo Barreira (Sectigo), Brianca Martin (Amazon), Dimitris Zacharopoulos (HARICA), Tim Hollebeek (DigiCert), Martijn Katerbarg (Sectigo), Roberto Quinones (Intel)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Administration<o:p></o:p></b></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraphCxSpFirst style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l5 level1 lfo3'>Attendance and requests a minute taker<o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l5 level1 lfo3'>Reads antitrust statement <o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l5 level1 lfo3'>Waiting on minutes for two meeting prior to face to face<o:p></o:p></li><li class=MsoListParagraphCxSpLast style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l5 level1 lfo3'>Face to face minutes will be approved at next meeting<o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Malware Based Revocation Ballot<o:p></o:p></b></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraphCxSpFirst style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Ballot summary<o:p></o:p></li><ul style='margin-top:0in' type=circle><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level2 lfo6'>Taking approach BRs and SBRs are taking on revocation<o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level2 lfo6'>Removing CS specific suspect code reference<o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level2 lfo6'>Discuss 5 day revocation window, consider a 5 day and/or 7 day<o:p></o:p></li></ul><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Bruce noted good to sync with the SSL BRs at 24 hours and 5 days, but ok with suspect code at 5 days and 7 days<o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Discussion if we should have requirements defining a misused certificate compared to private key misuse <o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Additional discussion of misused keys, compared to compromised keys, and signed code that is suspect <o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Action point to consider defining misuse <o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Discussion on proper time limit for known compromise and signing malware <o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Discussion of the difference in timing requirements between key compromise and singing suspect code and back dating revocation <o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Discussed the consideration that signing suspect code should be treated as a potential compromise of key and/or the subscriber does not have practices in place to detect suspect code <o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Discussion of asking Microsoft as the main certificate consumer to weigh in on complicated use cases. This is a practice now and not an overly common practice, this would take place after revocation and there is an open period to back date revocation <o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Mentioned the RFC does not allow back dating, but it is an important tool for code signing<o:p></o:p></li><li class=MsoListParagraphCxSpMiddle style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Need to cover the loophole for certificate problem reports for expired or revoked certificates<o:p></o:p></li><li class=MsoListParagraphCxSpLast style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l0 level1 lfo6'>Potential wording is being drafted and will be included in GitHub and distributed <o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Other topics<o:p></o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraphCxSpFirst style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l4 level1 lfo9'>It was determined singing service did not have much to discuss at this time and we should focus on the revocation topic<o:p></o:p></li><li class=MsoListParagraphCxSpLast style='margin-bottom:0in;margin-left:0in;mso-add-space:auto;line-height:normal;mso-list:l4 level1 lfo9'>A couple of points on removing the SSL BR reference were mentioned and would be discussed on future calls<o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-family:"Arial",sans-serif;color:#48565E;mso-ligatures:none'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif;color:#48565E;mso-ligatures:none'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-ligatures:none'><o:p> </o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p></div></body></html>