Android Bazaar and Conference 2021 Spring

2021年6月21日に開催された「Android Bazaar and Conference 2021 Spring」の発表資料です。

発表動画
https://www.youtube.com/watch?v=DfJ5CNdNR3k&t=1715s

Transcript

1. ༗ࢁɹܓೋ
   
   "OESPJE
   #B[BBS
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   4QSJOH  ઀৮֬ೝ"1* 
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   NPEF΁ͷରԠʹ ޲͚ͨݕ౼ʹ͍ͭͯ
2. ໨࣍ w ͸͡Ίʹ
   w &YQPTVSF
   /PUJ fi DBUJPOT
   "1*ͱ͸
   w ઀৮֬ೝΞϓϦʮ$0$0"ʯͷ&YQPTVSF8JOEPX
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   w 9BNBSJO޲͚&/
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   w &YQPTVSF8JOEPX
   NPEFҠߦʹ͋ͨͬͯͷ஫ҙ  https://speakerdeck.com/keiji/android-bazaar-and-conference-2021-spring
3. C-LIS CO., LTD.  ༗ࢁ
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   044ίϥϘϨʔλʔ https://speakerdeck.com/keiji/android-bazaar-and-conference-2021-spring
4. ໔੹ࣄ߲
   
   %JTDMBJNFS  ຊࢿྉͷ಺༰͸ɺ༗ࢁܓೋͷݸਓͷݟղͰ͋Γɺ 
 ॴଐ·ͨ͸ؔ༩͢Δ૊৫Λ୅ද͢Δ΋ͷͰ͸͋Γ·ͤΜɻ https://speakerdeck.com/keiji/android-bazaar-and-conference-2021-spring
5. αϙʔτ
   
   4VQQPSU  https://blog.keiji.dev/2021/06/abc2021s ຊࢿྉͷ಺༰ʹؔ͢Δ͓໰͍߹Θͤɾαϙʔτ͸ɺ 
 ࣍ͷαΠτͰ͝Ҋ಺͠·͢ɻ
6.  ઀৮֬ೝ"1*ͱ͸
7. &YQPTVSF
   /PUJ fi DBUJPOT
   "1* &YQPTVSF
   /PUJ fi DBUJPOTʢ઀৮֬ೝʣ
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8. ઀৮Λه࿥͢Δ࢓૊Έ &/
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9. ൃ৴͞Ε͍ͯΔ৘ใ 
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    5&,ͷ༗ޮظؒ i ʹੜ੒͞ΕΔ31*͸ɺ࣍ͷࣜͰද͞ΕΔɻ  TEK → RPIͷܭࢉ͸͔ΜͨΜ
    RPI → TEKΛܭࢉ͢Δͷ͸Ή͔͍ͣ͠ https://covid19-static.cdn-apple.com/applications/covid19/current/static/contact-tracing/pdf/ExposureNoti fi cation-CryptographySpeci fi cationv1.2.pdf RPIKi ← HKDF(teki, NULL, UTF8(“EN-RPIK”), 16) RPIi,j ← AES128(RPIKi, PaddedDataj) ظؒ j ͷ৘ใؚ͕·ΕΔ
14. ཅੑऀొ࿥ ཅੑͱ൑ఆ͞Εͨར༻ऀ͕઀৮֬ೝΞϓϦͰཅੑऀొ࿥Λߦ͏ͱɺ઀৮֬ೝΞ ϓϦ͸ɺ&/
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    ୺຤ʹอଘ͞Ε͍ͯΔ5&,͸࠷େ೔෼ɻ  ਍அΩʔαʔόʔ ઀৮֬ೝΞϓϦ TEK TEK TEK TEK TEK TEK
15. ਍அΩʔΛ഑෍ ਍அΩʔαʔόʔ͸ཅੑऀͷ5&,Λ·ͱΊͯిࢠॺ໊Λͯ͠ʮ਍அΩʔʢ%JBHOPTJT
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16. ઀৮֬ೝ ઀৮֬ೝΞϓϦ͸ɺऔಘͨ͠਍அΩʔΛ઀৮ͱΈͳ͢৚݅ͱͱ΋ʹ&/
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    ৚݅ʹ߹͏઀৮͕ه࿥͞Ε͍ͯΕ͹ʮ઀৮͋Γʯͱͯ͠઀৮֬ೝΞϓϦʹ݁Ռ Λฦ͢ɻ
    ઀৮֬ೝΞϓϦ͸ɺཅੑऀͱͷೱް઀৮ͱͯ͠ར༻ऀʹදࣔ͢Δɻ 
17. "exposure_summary": { "AttenuationDurationsInMinutes": [ 1800, 480, 0 ], "DaysSinceLastExposure": 0, "MatchedKeyCount": 2, "MaximumRiskScore": 255, "SummationRiskScore": 54560 }, …  &YQPTVSF4VNNBSZ 
 &YQPTVSF*OGPSNBUJPO https://github.com/keiji/chino/wiki/Sample-ExposureData-iOS-(V1) "exposure_informations": [ { "AttenuationDurationsInMinutes": [ 1436, 0, 0 ], "AttenuationValue": 26, "DateMillisSinceEpoch": 1622851200000, "Duration": 30.0, "TotalRiskScore": 256, "TransmissionRiskLevel": 4 }, … https://github.com/keiji/chino/wiki/Sample-ExposureData-Android-(Legacy-v1)
18. 
19.  #MVFUPPUIͷి೾ڧ౓΍ड৴ײ౓
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20. &ODSZQUFE
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 Metadata 4 bytes Length fi cation-BluetoothSpeci fi cationv1.2.pdf
21. &ODSZQUFE
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    ʡ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx xxxx xx xx Major Minor 35 f6 0e b9 Reserved 1 byte Transmit power level 1 byte Versioning 1 byte LSB fi rst Reserved 1 byte Decrypt AES-CTR Reserved https://covid19-static.cdn-apple.com/applications/covid19/current/static/contact-tracing/pdf/ExposureNoti fi cation-BluetoothSpeci fi cationv1.2.pdf https://covid19-static.cdn-apple.com/applications/covid19/current/static/contact-tracing/pdf/ExposureNoti fi cation-CryptographySpeci fi cationv1.2.pdf
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23.  &/
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26. όʔδϣϯͷมભ "OESPJE
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27. J04
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 ExposureInformation DailySummary ExposureWindow
28. "exposure_summary": { "AttenuationDurationsInMinutes": [ 1800, 480, 0 ], "DaysSinceLastExposure": 0, "MatchedKeyCount": 2, "MaximumRiskScore": 255, "SummationRiskScore": 54560 }, …  &YQPTVSF4VNNBSZ 
 &YQPTVSF*OGPSNBUJPO https://github.com/keiji/chino/wiki/Sample-ExposureData-iOS-(V1) "exposure_informations": [ { "AttenuationDurationsInMinutes": [ 1436, 0, 0 ], "AttenuationValue": 26, "DateMillisSinceEpoch": 1622851200000, "Duration": 30.0, "TotalRiskScore": 256, "TransmissionRiskLevel": 4 }, … https://github.com/keiji/chino/wiki/Sample-ExposureData-Android-(Legacy-v1)
29. "daily_summaries": [ { "DaysSinceEpoch": 1622937600000, "DaySummary": { "MaximumScore": 1860.0, "ScoreSum": 51660.0, "WeightedDurationSum": 51660.0 }, "ConfirmedClinicalDiagnosisSummary": null, "ConfirmedTestSummary": { "MaximumScore": 1860.0, "ScoreSum": 51660.0, "WeightedDurationSum": 51660.0 }, "RecursiveSummary": null, "SelfReportedSummary": null },  %BJMZ4VNNBSZ 
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30. J04
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31.  &/
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 ઀৮֬ೝΞϓϦͷ։ൃ
32. &/
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33.  &/
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34. "OESPJE (PPHMF͕ϗϫΠτϦετʹొ࿥ͨ͠(PPHMFΞΧ΢ϯτΛϓϥΠϚϦΞΧ΢ϯ τͯ͠αΠϯΠϯͨ͠୺຤͕ඞཁɻ 
35. σόοάઃఆ
    
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37.  ઀৮֬ೝΞϓϦʮ$0$0"ʯͷ 
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    https://github.com/keiji/chino/wiki/Default-ExposureCon fi guration "OESPJEJ04ͷബ͍ϥούʔͱͯ͠ಈ࡞͢Δ͜ͱΛ໨ࢦ͍ͯ͠Δɻ
    .*5ϥΠηϯεɻ  https://github.com/keiji/chino
44. 4BNQMFΞϓϦʢ"OESPJE
    J04ʣ  Sample.Android Sample.iOS
45. ରԠ͍ͯ͠Δ"1* &/
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    #JOEJOHଆͷରԠ͕ඞཁɻ
    1VMM
    3FRVFTU͸݄೔ʹఏग़ࡁΈɻ  https://github.com/xamarin/XamarinComponents/pull/1133
49. 9BNBSJO'PSNTʢ1SJTNʣ࣮૷αϯϓϧ  https://github.com/keiji/chino.prism
50. ݱঢ়ͷ՝୊  https://github.com/keiji/chino/issues
51.  &YQPTVSF8JOEPX
    NPEFҠߦʹ 
 ͋ͨͬͯͷ஫ҙ
52. ϩʔΧϧ௨஌ͷ࣮૷ʢJ04ʣ  ઀৮৘ใΛऔಘ͢Δͱ͖ʹ௨஌͕දࣔ͞Εͳ͍
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53. ઀৮൑ఆͷઃఆ -FHBDZWͷઃఆ͸࠶ར༻Ͱ͖ͳ͍ͷͰɺ࠶౓ઃఆΛઃܭ͠௚͢ඞཁ͕͋Δɻ  https://developer.apple.com/documentation/exposurenoti fi cation/enexposurecon fi guration ը૾͸Apple DeveloperΑΓҾ༻
54.  "UUFOVBUJPO
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    5ISFTIPME "apple_exposure_config_v2": { "attenuation_duration_thresholds": [ 50, 70, 90 ], https://developer.apple.com/documentation/exposurenoti fi cation/enexposurecon fi guration ը૾͸Apple DeveloperΑΓҾ༻
55. "OESPJEͱJ04ͰઃఆՄೳͳ஋ͷൣғ͕ҧ͏ ஋ͷൣғ͕ҟͳΔ߲໨͕͋ΔͷͰ஫ҙ͕ඞཁɻ  "infectiousness_weights": { "High": 1.0, "Standard": 1.0, "None": 1.0 }, "report_type_weights": { "Con fi rmedClinicalDiagnosis": 1.0, "Con fi rmedTest": 1.0, "SelfReport": 1.0, "Recursive": 1.0, "Revoked": 1.0, "Unknown": 1.0 } "infectiousness_high_weight": 100.0, "infectiousness_standard_weight": 100.0, "report_type_con fi rmed_clinical_diagnosis_weight": 100.0, "report_type_con fi rmed_test_weight": 100.0, "report_type_recursive_weight": 100.0, "report_type_self_reported_weight": 100.0, 100 - 250 (iOS) 1.0 - 2.5 (Android)
56. "OESPJEͱJ04ͰઃఆՄೳͳ஋ͷൣғ͕ҧ͏ ஋ͷൣғ͕ҟͳΔ߲໨͕͋ΔͷͰ஫ҙ͕ඞཁɻ  "report_type_con fi rmed_clinical_diagnosis_weight": 99.0, "report_type_con fi rmed_test_weight": 250.0, "report_type_recursive_weight": 251.0, "report_type_self_reported_weight": 1.0, 100 - 250 (iOS) RpTyW { CTest 250, CClin 99, SelfR 1, Recurs 251 }
57. 1MBUGPSN͝ͱͷσʔλͷදݱͷҧ͍  https://github.com/keiji/chino/issues/34
58.  https://github.com/keiji/chino/issues/34
59. "daily_summaries": [ { "DaysSinceEpoch": 1622937600000, "DaySummary": { "MaximumScore": 1860.0, "ScoreSum": 51660.0, "WeightedDurationSum": 51660.0 }, "ConfirmedClinicalDiagnosisSummary": null, "ConfirmedTestSummary": { "MaximumScore": 1860.0, "ScoreSum": 51660.0, "WeightedDurationSum": 51660.0 }, "RecursiveSummary": null, "SelfReportedSummary": null },  %BJMZ4VNNBSZ 
 &YQPTVSF8JOEPX "exposure_windows": [ { "CalibrationConfidence": 3, "DateMillisSinceEpoch": 1622937600000, "Infectiousness": 1, "ReportType": 1, "ScanInstances": [ { "MinAttenuationDb": 24, "SecondsSinceLastScan": 300, "TypicalAttenuationDb": 25 }, { "MinAttenuationDb": 24, "SecondsSinceLastScan": 240, "TypicalAttenuationDb": 25 }, … https://github.com/keiji/chino/wiki/Sample-ExposureData-iOS-(V2) https://github.com/keiji/chino/wiki/Sample-ExposureData-Android-(Exposure-Window-mode) ؒҧ͍
60. ·ͱΊ &YQPTVSF8JOEPX
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61. ຊࢿྉ͸༗ࢁܓೋͷஶ࡞෺Ͱ͢ɻຊࢿྉͷશ෦ɺ·ͨ͸Ұ෦ʹ͍ͭͯɺஶ࡞ऀ͔ΒจॻʹΑΔڐ୚Λಘͣʹෳ੡͢Δ͜ͱ͸ې͡ΒΕ͍ͯ·͢ɻ ֤੡඼໊ɾϒϥϯυ໊ɺձ໊ࣾͳͲ͸ɺҰൠʹ֤ࣾͷ঎ඪ·ͨ͸ొ࿥঎ඪͰ͢ɻຊࢿྉதͰ͸ɺ˜ɺšɺäΛׂѪ͍ͯ͠·͢ɻ ຊࢿྉͷ಺༰͸ɺൃදऀݸਓͷݟղͰ͋Γɺॴଐ·ͨ͸ؔ༩͢Δ૊৫Λ୅ද͢Δ΋ͷͰ͸͋Γ·ͤΜɻ https://github.com/cocoa-mhlw/cocoa/ $0$0"΁ͷίϯτϦϏϡʔτ
    ͓଴͍ͪͯ͠·͢ɻ