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運用の観点から見たTLSプロトコルの動き

 運用の観点から見たTLSプロトコルの動き

90分で分かるサーバ証明書の最新動向 ~いまTLSとトラストが熱いんです~

Internet Week ショーケース in 広島

Shigeki Ohtsu

May 29, 2018
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  1. ӡ༻ͷ؍఺͔Βݟͨ
    5-4ϓϩτίϧͷಈ͖
    େ௡ൟथ
    Ϡϑʔגࣜձࣾ
    ̌̕෼Ͱ෼͔Δαʔόূ໌ॻͷ࠷৽ಈ޲ʙ͍·5-4ͱτϥετ͕ॵ͍ΜͰ͢ʙ
    ೥݄̑೔
    *OUFSOFU8FFLγϣʔέʔεJO޿ౡ

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  2. ࣗݾ঺հ
    w Ϡϑʔגࣜձࣾ$%/νʔϜॴଐɺ*&5'ඪ४ԽࢀՃɺࠇ
    ଳʢωοτϫʔΫɾηΩϡϦςΟʣ
    w /PEFKTίϛολʔUMT DSZQUPपΓͷ࣮૷ɺηΩϡϦςΟ
    νʔϜॴଐ Ϡϑʔגࣜձࣾ044σϕϩούʔೝఆऀ

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  3. 4:/
    4:/"$,
    "$,
    5$1ϋϯυγΣΠΫ
    (&5)551
    )5510,
    (&5)551
    )5510,
    )551௨৴ )5514௨৴
    4:/
    4:/"$,
    "$,
    5$1ϋϯυγΣΠΫ
    )551ϦΫΤετɾϨεϙϯε
    )551ϦΫΤετɾϨεϙϯε
    5-4ϋϯυγΣΠΫ
    ҉߸௨৴
    ฏจ௨৴
    ΫϥΠΞϯτ αʔό
    ΫϥΠΞϯτ
    )551ͱ)5514௨৴ͷҧ͍

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  4. ࠓ೥ळɺ)551௨৴ʹର͢ΔܯࠂڧԽ
    ೥݄ϦϦʔε༧ఆͷ$ISPNF͔Β
    ೥݄ϦϦʔε༧ఆͷ$ISPNF͔Β

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  5. ຊ೔ͷ಺༰
    ࠓޙͷ)5514αʔϏεӡ༻Ͱ஌͓ͬͯ͘΂͖5-4ϓϩτίϧͷݱঢ়
    ͷ՝୊ͱ࠷৽ಈ޲ʹ͍ͭͯղઆ͠·͢ɻ͜Μͳٙ໰ʹ͓౴͑͠·͢ɻ
    w ͳͥશ෦)5514ʹ͠ͳ͍ͱ͍͚ͳ͍ͷʁ
    w ϒϥ΢βʔɺ)5514αʔόɺূ໌ॻ ೝূہ
    ɺͲ͏͍͏ؔ܎ʁ
    w ͏ͪͷ)5514αʔόɺ͜ͷ··Ͱେৎ෉ʁ͜ͷޙͲ͏ͳΔͷʁ

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  6. Ϣʔβʔʢ͓٬༷ʣ
    04ɾϒϥ΢βϕϯμʔ
    5-4ΫϥΠΞϯτ։ൃऀ
    ೝূہ
    8FCαʔϏεఏڙऀ
    )5514FWFSZXIFSF࣌୅ͷεςʔΫϗϧμʔ
    )5514
    SPPUূ໌ॻ
    ιϑτ΢ΣΞఏڙ
    ࣦޮ֬ೝ
    ূ໌ॻఏڙ

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  7. Ϣʔβʔʢ͓٬༷ʣ
    04ɾϒϥ΢βϕϯμʔ
    5-4ΫϥΠΞϯτ։ൃऀ
    ೝূہ
    8FCαʔϏεఏڙऀ
    ̎ͭͷϙδγϣϯΛ࢖͍෼͚ͯ͠࿩Λ͠·͢
    )5514
    SPPUূ໌ॻ
    ιϑτ΢ΣΞఏڙ
    ࣦޮ֬ೝ
    ূ໌ॻఏڙ
    HTTPS everywhere
    TLS 1.0ഇࢭ
    ҉߸ํࣜͷSPOFղফ
    TLS1.3ɺQUICɺ଱ྔࢠ҉߸
    ৴པੑͷཁɺτϥετΞ
    ϯΧʔΛΊ͙Δಈ͖
    /PEFίϛολʔͱͯ͠ͷཱ৔
    ϠϑʔαʔϏεఏڙɺ
    *&5'ࢀՃऀͱͯ͠ͷཱ৔

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  8. )5514&WFSZXIFSF

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  9. ೥ͷ8FCϓϩτίϧελοΫਤ
    44-5-4
    5$1
    )551
    ηΩϡϦςΟ௨৴ͷ)5514͸ 44- 5-4Λར༻͍ͯͨ͠
    IUUQT
    IUUQ

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  10. ೥ͷ8FCϓϩτίϧελοΫਤ
    )551
    ηϚϯςΟΫε
    )551
    5$1
    5-4
    5-4
    )551
    5-4ͷར༻͕ ͷόʔδϣϯʹ޿͕Δ৽͘͠
    5-4্Ͱ)551ͷར༻͕Ͱ͖ΔΑ͏ʹͳͬͨɻ
    IUUQT
    IUUQ

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  11. কདྷͷ8FCϓϩτίϧελοΫਤ
    )551ηϚϯςΟΫε
    5$1
    5-4
    )551
    26*$
    6%1
    5-4
    )551
    5-4 ͕ഇࢭ͞Ε 5-4͕ར༻Ͱ͖Δ6%1্Ͱ
    5$1 5-4 )551ͷҰ෦ػೳΛ࣮ݱ͢Δ26*$͕ొ৔͢Δ
    IUUQT
    IUUQ

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  12. )5514ͷಋೖঢ়گ ಡΈࠐΈϖʔδׂ߹

    IUUQTMFUTFODSZQUPSHTUBUTQFSDFOUQBHFMPBET IUUQTUSBOTQBSFODZSFQPSUHPPHMFDPNIUUQTPWFSWJFX
    'JSFGPY
    $ISPNF
    +BQBO


    ೔ຊ͸
    Χࠃத࠷௿

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  13. ͳͥશ෦)5514ʹ͠ͳ͍ͱ
    ͍͚ͳ͍ͷʁ
    w /4" $()2ʹΑΔࠃՈϨϕϧͷ޿ൣғͳ౪ௌߦҝ͕໌Β͔ʹ
    w ௨৴ΩϟϦΞͱڠྗ͠ɺ%$಺΍ΠϯλʔωοτόοΫϘʔϯ
    ʹ౪ௌɾվ͟Μͷ࢓ֻ͚Λ഑ஔ
    w ฏจ௨৴Λ.J5.Ͱվ͟Μ͠ະ஌ͷϚϧ΢ΣΞΛײછͤ͞Δ
    w ҉߸ͷඪ४Խ࢓༷ʹόοΫυΞΛ࢓ֻ͚͍ͯΔͱͷ࿩΋
    CC BY 3.0 https://www.youtube.com/user/TheWikiLeaksChannel
    ೥݄ɿΤυϫʔυɾεϊʔσϯࣄ݅

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  14. /4"ʹΑΔαΠόʔ߈ܸͷҰྫ
    26"/56.
    '09"$*%
    IUUQXXXFYBNQMFDPN
    XXXFYBNQMFDPN
    Ϛϧ΢ΣΞΛૹΓࠐΉ
    ్தܦ࿏Ͱվ͟ΜίϯςϯπΛૹ৴
    '09"$*%ʹ༠ಋ
    վ͟Μίϯςϯπ
    IUUQTXXXTDIOFJFSDPNCMPHBSDIJWFTIPX@UIF@OTB@BUUIUNM

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  15. *"#
    ʹΑΔΠϯλʔωοτͷ
    ৴པੑʹؔ͢Δએݴ

    w ৽͘͠ϓϩτίϧΛઃܭ͢Δࡍʹ͸ɺ҉߸ԽػೳΛඞ
    ਢͱ͢΂͖ɻ
    w ωοτϫʔΫӡ༻ऀ΍αʔϏεఏڙऀʹ҉߸Խ௨৴ͷ
    ಋೖΛਪਐ͢ΔΑ͏ڧ͘ٻΊΔɻ
    w ίϯςϯπϑΟϧλʔ΍*%4౳ฏจ௨৴͕ඞཁͳػೳ
    ʹ͍ͭͯ͸কདྷతʹ୅ସٕज़ͷ։ൃʹऔΓ૊Ήɻ
    *OUFSOFU"SDIJUFDUVSF#PBSE

    IUUQTXXXJBCPSHJBCTUBUFNFOUPOJOUFSOFUDPOpEFOUJBMJUZ

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  16. ͳͥશ෦)5514ʹ͠ͳ͍ͱ
    ͍͚ͳ͍ͷʁ
    w Πϯλʔωοτͷ݈શੑΛ֬อ͢ΔͨΊɻ͕͜͜༳Β͙
    ͱେखͷ8FCαʔϏεͷ৴པੑ͕ͳ͘ͳΔɻ
    w Ұ෦Ͱ΋ฏจ௨৴͕࢒͍ͬͯΔͱͦ͜Λಥ͔ΕΔՄೳੑ͕
    ͋Δɻ
    w ࣗ෼͸ؔ܎ͳ͍ͱࢥ͍ͬͯͯ΋஌Βͳ͍͏ͪʹ࢓ࠐ·Εͯ
    ར༻͞ΕΔڪΕ΋ɻ
    w ௕ظతͳࢹ఺Ͱ͸IUUQ͸ϑΣʔζΞ΢τͷํ޲Ͱ͢ɻ

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  17. τϥετΞϯΧʔΛΊ͙Δ
    ೤͖ઓ͍

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  18. 5-4ηΩϡϦςΟͷ౔୆
    5-4ͷ
    ηΩϡϦςΟ
    ཚ਺ੜ੒
    1,*
    ൿີ伴ͷ
    ؅ཧ
    ҉߸ٕज़
    Τϯ
    τϩϐʔෆ଍
    ෆਖ਼
    ൃߦ
    ࿙Ӯ
    ΞϧΰϦζϜɾ
    ڧ౓ͷةຆԽ
    5-4͸ɺ͜ͷ̐ͭͷ֎෦ཁૉͷ্ͰΠϯλʔ
    ωοτͰ҆શͳ௨৴Λఏڙ͢Δ࢓૊ΈͰ͋Δɻ
    ٯʹݴ͑͹ɺͲΕ΄Ͳ׬ᘳͳ5-4ϓϩτίϧΛ࡞ͬͯ΋
    ͜ͷ̐ͭͷ֎෦ཁૉ͕ഁΒΕͨΒ҆શΛ֬อͰ͖ͳ͍ɻ

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  19. ৴པͷཁɺτϥετΞϯΧʔ
    αʔόূ໌ॻ
    தؒূ໌ॻ
    ϧʔτূ໌ॻ
    ΫϥΠΞϯτ಺

    ΫϥΠΞϯτެ։伴ૹ৴
    αʔόɾதؒূ໌ॻૹ৴
    5-4
    ϋϯυγΣΠΫ
    ʹΑΔαʔόೝূ
    ੺৭͸
    αʔό͔Βૹ৴
    τϥετΞϯΧʔ
    ॺ໊
    ॺ໊
    αʔόެ։伴ૹ৴ॺ໊

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  20. 5-4ΫϥΠΞϯτͱ04Ͱม
    ΘΔSPPU$"ͷࢀরઌ
    8JOEPXT .BD04 -JOVY "OESPJE
    *&&EHF 04ͷSPPU$" /" /" /"
    4BGBSJ /" 04ͷSPPU$" /" /"
    $ISPNF 04ͷSPPU$" 04ͷSPPU$"
    .P[JMMBͷ
    SPPU$"

    .P[JMMBͷ
    SPPU$"

    'JSFGPY
    .P[JMMBͷ
    SPPU$"
    .P[JMMBͷ
    SPPU$"
    .P[JMMBͷ
    SPPU$"
    .P[JMMBͷ
    SPPU$"
    /PEFKT
    .P[JMMBͷ
    SPPU$"
    .P[JMMBͷ
    SPPU$"
    .P[JMMBͷ
    SPPU$"
    /"
    EJTUSJCVUJPOఏڙͷDBCVOEMFQLHΛࢀর͢Δ৔߹΋͋Γ
    มߋɺमਖ਼͞Ε͍ͯΔՄೳੑ͋Γʣ
    .P[JMMBͷSPPU$"ϦετIUUQTIHNP[JMMBPSHNP[JMMBDFOUSBMSBXpMFUJQTFDVSJUZOTTMJCDLGXCVJMUJOTDFSUEBUBUYU

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  21. ϒϥ΢βʹΑͬͯҟͳΔྫ
    .BD04্ͷ$ISPNF
    .BD04্ͷ'JSFGPY

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  22. ϒϥ΢βʔWTೝূہ
    αʔόূ໌ॻ
    தؒূ໌ॻ
    ϧʔτূ໌ॻ
    ΫϥΠΞϯτ಺

    ॺ໊
    ॺ໊
    ಛఆͷϧʔτূ໌ॻͰॺ໊
    ͞Εͨূ໌ॻΛΤϥʔʹ
    ൃߦ೔࣌ͳͲͷ৚݅΋෇༩Մ
    04ͷSPPUূ໌ॻͷ؅ཧͱ͸ผʹΫϥΠΞϯτಠࣗͷ൑அͰϑΟϧλʔͰ͖Δɻ

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  23. )5514αʔόͷӡ༻
    ٕज़ෛ࠴
    ࠓޙ5-4ΛͲ͏ͨ͠Β͍͍ͷ͔ʁ

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  24. ·ͣ͸
    ࠓͷߏ੒Λ͔ͬ͠ΓνΣοΫ͢Δɻ
    ࠷ۙͷ044͸EFGBVMU͕҆શଆʹͳΔΑ͏ʹ͍ͯ͠·͢ɻ
    ࠷৽ͷ-54όʔδϣϯʹਵ࣌Ξοϓσʔτ͠·͠ΐ͏ɻ

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  25. ͪΌΜͱͨ͠҉߸ํࣜͷઃఆ
    伴ަ׵ 34"
    'PSXBSE4FDSFDZ
    %)&
    &$%)&
    /*451
    &$%)&
    9
    σδλϧॺ໊ 34"
    %44
    %4"

    &$%4" &E%4"
    ରশ҉߸ %&43$ %&4 "&4 $IB$IB ͦͷଞ
    ҉߸Ϟʔυ $#$
    "&"%
    $$. ($. 1PMZ
    ϝοηʔδೝূ
    13'
    .% 4)" 4)" 4)"
    ஫ҙ͸ɺ҉߸ֶత஫ҙͱকདྷతʹීٴ͕ݟࠐ·Εͳ͍஫ҙ΋ؚ·Ε·͢

    ੺ةݥ ԫ஫ҙ ྘҆શ ੨͜Ε͔Β
    ஫ҙ$3:153&$*1"ͷʮ44-5-4҉߸ઃఆΨΠυϥΠϯୈ൛ʯͱධՁ͕ҟͳΓ·͢ɻ

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  26. ٕज़ෛ࠴ͷฦࡁʹඋ͑Δ
    ग़యIUUQTXXXTMJEFTIBSFOFUUFDICMPHZBIPPXFCIUNMKIUNMKC
    Φϫίϯϓϩτίϧ 5-4

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  27. 5-4͸ɺͳͥΦϫίϯʁ
    w ೥ʹ࢓༷ࡦఆɻ΋ͱ΋ͱ͸44-ͷඪ४ԽΛ໨ࢦͨ͠΋ͷ
    w "&4બఆ ೥
    લͩͬͨͷͰ౰ॳ͸3$ͱ%&4ͷΈαϙʔτɻ3$
    ͸طʹةຆԽɺ%&4͸48&&5߈ܸΛड͚Δ͜ͱ͕஌ΒΕ͍ͯΔ
    w ϒϩοΫ҉߸Λ࢖͏ࡍͷॳظϕΫτϧͰ#&"45߈ܸΛड͚Δ͜ͱ͕஌
    ΒΕ͍ͯΔ ΫϥΠΞϯτଆͰཁରࡦ

    w $#$Ϟʔυͷ࣮૷͸աڈ਺ଟ͘ͷ੬ऑੑΛੜΈग़ͨ͠ͷͰ"&"% ೝূ
    ෇҉߸
    ΁ͷҠߦ͕ओྲྀʹ

    w ."$13' 伴ੜ੒
    Ͱ͸.%ͱ4)"Λ૊Έ߹Θͤͨ΋ͷɻ͜Ε͕͋
    ΔݶΓةຆԽ͞Εͨ.%ͷίʔυΛͳ͘͢͜ͱ͸Ͱ͖ͳ͍

    5-4ͱڞ௨߲໨

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  28. 5-4ϓϩτίϧͷൺֱ
    ࡦఆ
    ϒϩοΫ҉߸ͷ
    ॳظϕΫτϧ
    $#$
    Ϟʔυ
    "&"% ."$13'
    5-4 ೥ ͳ͠ ༗ ͳ͠ 4)" .%
    5-4 ೥ ༗ ༗ ͳ͠ 4)" .%
    5-4 ೥ ༗ ༗ ༗ 4)"Ҏ্
    5-4 ೥ ഇࢭ ഇࢭ ඞਢ
    ),%'
    4)"Ҏ্
    1$*%44
    ېࢭʙ
    ਪ঑
    ஫ҙ$3:153&$*1"ͷʮ44-5-4҉߸ઃఆΨΠυϥΠϯୈ൛ʯͱධՁ͕ҟͳΓ·͢ɻ

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  29. ϓϩτίϧͷഇࢭ͸೉͍͠
    w ΋ͱ΋ͱ1$*%44͸೥݄೔ʹ5-4Λഇࢭ༧ఆ
    ͩͬͨɻͦΕΛ̎೥Ԇظɻ
    w େख 4BMFT'PSDF *#. 0SBDMF
    ͷαʔϏε͸طʹରԠࡁɻ͕ͩ
    Ҡߦ࡞ۀ͸Ͳ͜΋Ұ౓͸ࣦഊͯ͠ϩʔϧόοΫ͍ͯ͠Δɻ
    w "OESPJEYͷඪ४ϒϥ΢βʔَ͕໳ɻ"1*ར༻ͳͲ͸ΫϥΠΞ
    ϯτଆͷվमͱ͔ඞཁɻ
    w ࣄલʹϢʔβ΁ͷೝ஌͕೉͍͠ɻഇࢭޙ͸Τϥʔը໘ʹɻ
    w 44-͸100%-&੬ऑੑͷެදͰΨϥέʔରԠΛؚΊഇࢭͰ͖
    ͨɻ5-4͸ಉ͡Α͏ʹͳΔͷ͔ɺͳΒͳ͍ͷ͔ɻ

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  30. Ͱ͸Ͳ͏͢Ε͹ʁ
    w ·ͣ͸Ϟχλʔ
    w 5-4όʔδϣϯΛΞΫηεϩάʹग़͢
    w ׂ߹΍6"ɺTSDJQ౳ͷ܏޲Λ೺Ѳ
    w Πϯγσϯτൃੜ࣌ʹӨڹ౓Λ೺ѲͰ͖ΔΑ͏४උ͕େ
    ࣄɻ

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  31. কདྷʹඋ͑Δ
    5-4

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  32. 5-4͕ٻΊΒΕΔഎܠ
    ৗ࣌5-4࣌୅Λܴ͑Δʹ͋ͨͬͯɺ͔ͬ͠Γͨ͠ϓ
    ϩτίϧ͕ඞཁ
    5-4ͷݶք
    w ༷ʑͳٕज़ෛ࠴ͷ஝ੵ
    ௕ظʹ࢖͑ΔΑΓ҆શͰߴੑೳͳ5-4ϓϩτίϧΛ࡞Δ

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  33. 5-4ͷݶք
    w ݱࡏͷ5-4Ͱఆٛ͞Ε͍ͯΔػೳͷ
    Ұ෦͸ɺطʹར༻͢ΔͱةݥͰ͋Δɻ
    w աڈ༷ʑͳ5-4ͷ߈ܸख๏΍੬ऑੑ͕ެ
    ։͞Εɺͦͷ౎౓ରࡦ͕औΒΕ͖ͯͨɻ
    w ͔͠͠Ұ࣌తͳରԠͰࠜຊతɾൈຊతͳ
    ରࡦʹͳ͍ͬͯͳ͍΋ͷ΋ଟ͍ɻ
    ຊདྷ͜ͷΑ͏ͳΨΠυϥΠ
    ϯ͕ͳͯ͘ࡁΉͷ͕๬·͍͠

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  34. 5-4ͷಛ௃
    ༷ʑͳػೳɺ߲໨ͷݟ௚͠ɾഇࢭ
    ࣌୅ʹ߹Θͳ͘ͳͬͨ΋ͷɺΑΓޮ཰తʹมߋमਖ਼Ͱ͖Δ΋ͷΛ5-4
    ͔Βػೳɾ߲໨Λ਺ଟ͘ഇࢭ
    ΑΓηΩϡΞʹ
    ฏจ௨৴͕ඞཁͳ෦෼Λۃྗগͳͯ͘͠৘ใΛൿಗ
    ͜Ε·Ͱ߈ܸର৅ͱͳͬͨػೳΛۃྗഉআ͠কདྷతͳ߈ܸʹඋ͑Δ
    ੑೳ޲্
    ॳظ઀ଓͷ୹ॖʹΑΔੑೳ޲্
    த਎తʹ͸5-4Ϩϕϧͷେมߋ

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  35. ೥ɺ5-4࢓༷Խ׬ྃ
    3'$ൃߦ଴ͪ
    օ͞Μɺ஌Βͳ͍͏ͪʹ5-4Λ࢖͍ͬͯ·͢ɻ

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  36. 5-4ͱ5-4ͷҧ͍
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  37. 5-4ͷϋϯυγΣΠΫ355
    ClientHello+νέοτ
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  38. $MJFOU)FMMP355
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  39. ΞϓϦ։ൃऀ΍αʔό؅ཧऀ͕ԿΛؾΛ
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    w 5-4͕༗ޮʹͳΔ͜ͱͰϛυϧϘοΫεɺ'8ɺ*%4*14ͳ
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    w 5-4ͰഇࢭʹͳΔػೳ ಛʹ34"伴ަ׵
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    w ٕज़తͳ՝୊
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    w 355Λ࢖Θͳ͔ͬͨ৔߹ʹ໰୊͸ൃੜ͠ͳ͍ͷ͔ʁ

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  40. 5-4ҠߦͷλΠϛϯά͸ʁ
    w 5-4ͷ࢓༷ԽʹΑͬͯ5-4͕ഇࢭ͞ΕΔ͜ͱ͸ͳ͍ɻ5-4
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    w 0QFO44- ۙ೔ϦϦʔε༧ఆ
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    w ݱࡏͷ-540QFO44-͸ɺ೥݄຤Ͱ&P-
    w ࠓ೥຤͔Βདྷ೥ʹ͔͚ͯόʔδϣϯΞοϓ͸ඞਢɻࣗવʹ5-4ʹ
    ͳͬͯ͠·͏͜ͱ΋ɻ5-4͚ͩͷ҉߸ઃఆͩͱΤϥʔʹͳΔՄೳ
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    w /*45͸ถࠃ੓෎ܥͷ)5514αʔό͸·Ͱ 355Λ࢖Θͳ
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