ブロックチェーン時代の認証 / Authentication in the Blockchain Era
by
Ryo Manzoku
Link
Embed
Share
Beginning
This slide
Copy link URL
Copy link URL
Copy iframe embed code
Copy iframe embed code
Copy javascript embed code
Copy javascript embed code
Share
Tweet
Share
Tweet
Slide 1
Slide 1 text
ϒϩοΫνΣʔϯ࣌ͷೝূ 2019-08-30 builderscon @rmanzoku
Slide 2
Slide 2 text
ࣗݾհ • ຬ ྄ ʢManzoku Ryoʣ • double jump.tokyoגࣜձࣾ ϦʔυΤϯδχΞ • ϒϩοΫνΣʔϯήʔϜઐۀ։ൃձࣾ • ΠϯϑϥɺϒϩοΫνΣʔϯɺ όοΫΤϯυ • GolangɺPythonɺSolidity
Slide 3
Slide 3 text
͋Β͢͡ • ϒϩοΫνΣʔϯͱWebೝূɺެ։伴ೝূͱ͍͏ڞ௨ Λ࣋ͪɺ૬ޮՌʹΑΓޓ͍ͷ՝ΛղܾͰ͖ΔՄೳੑ͕ ߴ͍ • ϒϩοΫνΣʔϯͱWebೝূ͕ҰาઌʹਐΜͩੈքͰԿ͕ ى͖Δ͔ϙΤϜΛ͍ͨ͠ • ϒϩοΫνΣʔϯΛޠΔͨΊʹલఏͱͳΔϒϩοΫνΣʔ ϯࣝΛްΊʹͯ͋͠ΔͷͰɺϒϩοΫνΣʔϯΘ͔ͬͨ ؾʹͳΕΔͣ
Slide 4
Slide 4 text
ϒϩοΫνΣʔϯΛऔΓר͘ݱঢ়
Slide 5
Slide 5 text
ݬ໓ظʹಥೖͨ͠ϒϩοΫνΣʔϯ
Slide 6
Slide 6 text
ϒϩοΫνΣʔϯͷ͍· • 2018ΨʔτφʔࣾͷϋΠϓɾαΠΫϧͰݬ໓ظ • ݬ໓ظʢݬ໓ͷ͘΅ɺTrough of Disillusionmentʣ • ٕज़աͳظʹԠ͑ΒΕͣٸʹؔ৺͕ࣦΘΕɺ ʮݬ໓ͷ͘΅ʯʹೖΔɻͦͯ͠ϝσΟΞͦͷ ٕज़ΛऔΓ্͛ͳ͘ͳΔɻ • ଟ͘ݚڀ։ൃஈ֊ • ࣾձ࣮ɺͱ͍͏ݴΘΕΔͷগͳ͍ɻ • 1ͭͷͱͯ͠ϒϩοΫνΣʔϯήʔϜ͕͋Δ
Slide 7
Slide 7 text
ϒϩοΫνΣʔϯήʔϜͱʁ • ϒϩοΫνΣʔϯٕज़ΛͬͨήʔϜ • ϒϩοΫνΣʔϯ্ʹΞΠςϜΩϟϥΫλʔΛॴ༗ใ Λه͢Δ • σδλϧΞηοτͱͳͬͨΞΠςϜΩϟϥΫλʔӡӦ ͔Βͷି༩Ͱͳ͘Ϣʔβʔͷॴ༗ͱͳΔ • ϢʔβʔؒͰΓͱΓ͕ߦΘΕɺΞΠςϜӡӦ͚ͩͷ ͷͰͳ͘ɺϢʔβʔͱͷڞ༗ͷࢿ࢈ͱͳΔ
Slide 8
Slide 8 text
௨՟ͱσδλϧΞηοτ • ྔΛѻ͏௨՟ͱ࣭Λѻ͏σδλϧΞηοτ • ʮԾ௨՟ʯͱ࣋ͯᅥ͞ΕͨͷͰͳ͘ɺ1ͭ1͕ͭ ସෆՄೳͳՁͱͯ͠ೝࣝ͞Ε͍ͯΔͷ • ସՄೳͳ௨՟ʹ͓͍ͯ1ສԁ1ສԁͷՁɺ1000ԁࡳ Λ10ຕूΊΕ1ສԁͱಉ͡Ձ • ସෆՄೳͳՁʹ͓͍ͯɺʮೣೣͰɺ͏ͪͷϛέ ͱ͓ྡͷλϚҧ͏ʯ
Slide 9
Slide 9 text
σδλϧΞηοτͷՁ • ϒϩοΫνΣʔϯʹΑΓσδλϧΞηοτͷʮॴ༗ใʯ ͱʮৡʯΛѻ͏͜ͱ͕Ͱ͖Δ • σδλϧΞηοτΛݸਓ͕ʮॴ༗ʯՄೳ • σδλϧΞηοτΛॴ༗ऀ͕ʮৡʯՄೳ • ʮॴ༗ʯ͔ΒʮෳαʔϏεؒͰͷ൚༻ੑʯ • ʮৡʯ͔Βʮೋ࣍ྲྀ௨ࢢʯ • σδλϧΞηοτݱ࣮ੈքʹ͓͚ΔʮϞϊʯʹ͍ۙ֓ ೦Λσδλϧ্ʹ࠶ݱ͍ͯ͠Δ
Slide 10
Slide 10 text
1ͭͷΞηοτΛ2ͭͷήʔϜͰڞ༗͢Δ
Slide 11
Slide 11 text
ೋ࣌ྲྀ௨ࢢͰΓऔΓ͞ΕΔήʔϜΩϟϥΫλʔ
Slide 12
Slide 12 text
https://mch.gg/start
Slide 13
Slide 13 text
MyCryptoHeroesʢϚΠΫϦʣͱ • ήʔϜʹ͔͚͓ͨ࣌ؒۚɺ͋ͳͨͷࢿ࢈ͱͳ Δੈք • ϒϩοΫνΣʔϯEthereumΛར༻ • Ethereum্ͰͷDailyActiveUserɾNFTऔҾྔ/औҾͰ ੈք1Ґ • ΩϟϥΫλʔɺثඋɺ͕σδλϧΞηοτ
Slide 14
Slide 14 text
ϒϩοΫνΣʔϯήʔϜ • 2017.11 CryptoKitties ϦϦʔε • 2017.12 Etheremon ϦϦʔε • 2018.06 ͘Γಲ ϦϦʔεʢຊൃʣ • 2018.11 MyCryptoHeroes ϦϦʔεʢຊൃʣ • 2019.06 CryptoSpells ϦϦʔε ʢຊൃʣ • 2019.?? ????
Slide 15
Slide 15 text
ͳͥήʔϜʹϒϩοΫνΣʔϯΛ͏ͷʁ ήʔϜ × ίϯϐϡʔλ ϏσΦήʔϜ 1980 Πϯλʔωοτ ΦϯϥΠϯήʔϜ 2000 ίϛϡχςΟ ιʔγϟϧήʔϜ 2010 Τίϊϛʔʢܦࡁੑʣ ϒϩοΫνΣʔϯήʔϜ 2020 × × ×
Slide 16
Slide 16 text
ϒϩοΫνΣʔϯ/Ethereumͱ
Slide 17
Slide 17 text
ϒϩοΫνΣʔϯͱ • ϒϩοΫνΣʔϯͱࢄܕாΛ࣮ݱ͢Δٕज़ • ʮલϒϩοΫใʯͱʮ࣮ߦ͢ΔτϥϯβΫγϣϯใʯ ͱ͋Δ݅Λຬͨ͢ҙͷNonceΛ͚ϒϩοΫΛੜ • NonceͷΛݟ͚ͭɺϒϩοΫΛ࡞͢Δ͜ͱΛMinning ͱ͍͍ɺMinningΛߦ͏ࣄۀऀ/ݸਓΛMinerɺMinningΛߦ ͏ܭࢉػ/ϓϩάϥϜΛNodeͱݺͿ
Slide 18
Slide 18 text
ϒϩοΫνΣʔϯͱ
Slide 19
Slide 19 text
༷ʑͳʮϒϩοΫνΣʔϯʯ • ʮϒϩοΫνΣʔϯʯͱ͍͏ݴ༿จ຺ʹΑ͔ͬͯΘΔ • ٕज़ͷ • ҉߸௨՟ͷ • ϒϩοΫνΣʔϯωοτϫʔΫͷ • ϒϩοΫνΣʔϯωοτϫʔΫʹछྨ͕͋Δ • ύϒϦοΫνΣʔϯ • ίϯιʔγΞϜνΣʔϯ • ϓϥΠϕʔτνΣʔϯ
Slide 20
Slide 20 text
ύϒϦοΫνΣʔϯ • toCྖҬͰओʹͯ͞ΕΔͷʮύϒϦοΫνΣʔ ϯʯ • ୭ͰϊʔυΛ࣋ͬͯϚΠχϯάͰ͖Δ͠ɺ୭Ͱτϥϯ βΫγϣϯΛൃߦͰ͖Δ • ຊൃදͰɺϒϩοΫνΣʔϯͱݴͬͨ߹ύϒϦοΫ νΣʔϯΛࢦ͠·͢
Slide 21
Slide 21 text
༗໊ͳϒϩοΫνΣʔϯ • Bitcoin Ұ൪༗໊ͳͭɻSatoshi Nakamoto͕ൃදͨ͠ จΛݩʹ࣮ͨ͠ϒϩοΫνΣʔϯωοτϫʔΫɻϋο γϡؔͰचͭͳ͗ʹͨ͠ϒϩοΫͷ֓೦ʹΠϯηϯ ςΟϒΛಋೖͯ͠Γཱͨͤͨ
Slide 22
Slide 22 text
༗໊ͳϒϩοΫνΣʔϯ • Ethereum Α͘ΘΕΔͭɻVitalik ButerinΛத৺ʹߟ Ҋɺ։ൃ͞ΕͨϒϩοΫνΣʔϯωοτϫʔΫɻBitcoin Ͱൃ໌͞ΕͨࢄாͱΠϯηϯςΟϒʹՃ͑ɺ SmartContractͱ͍͏ΞϓϦέʔγϣϯΛϒϩοΫνΣʔ ϯ্Ͱ࣮ߦͰ͖ΔΑ͏ʹͨ͠
Slide 23
Slide 23 text
Ethereum • ϒϩοΫνΣʔϯΛͬͨࢄΞϓϦέʔγϣϯϓϥο τϑΥʔϜ • EVMͰ࣮ߦ͞ΕΔSmartContractΛSolidityݴޠͰهड़ • ݡ͍ܖ • EIP/ERCͱ͍͏ίϛϡχςΟओಋͷඪ४ن֨ • ެ։҉߸伴ʹΑΔΞΧϯτػೳͱڧྗͳܾࡁج൫ • τϥϯβΫγϣϯΛൃߦ͢ΔʹखྉΛࢧ͏ඞཁ͕ ͋Δ • MinerτϥϯβΫγϣϯखྉͱϚΠχϯάใुΛಘΔ
Slide 24
Slide 24 text
ϒϩοΫνΣʔϯվ͟ΜෆՄೳ • ϊʔυӡӦऀࣗͷརӹͷͨΊϒϩοΫΛੜ͢Δ • ϒϩοΫੜͷΠϯηϯςΟϒઃܭ • ୭͔ͷҙࢥͰɺվ͟ΜෆՄೳ • ͳ͔ͬͨ͜ͱʹͰ͖ͳ͍ • ͋Δਓ͕ൃߦͨ͠τϥϯβΫγϣϯిࢠॺ໊ʹΑͬͯͳ Γ͢·͠Ͱ͖ͳ͍ • 10ETHૹͬͨͷʹɺ1ETH͔͠ͳ͍ʂΈ͍ͨͳ͜ͱى ͜Γಘͳ͍
Slide 25
Slide 25 text
ϒϩοΫνΣʔϯ ʰϦΞϧʱ • ϒϩοΫνΣʔϯͰաڈͷใͷվ͟ΜࠔͰෆՄٯ • ݱ࣮ੈքʹ͓͚Δ࣌ؒͷྲྀΕͱಉ͡ • ϒϩοΫνΣʔϯͰॴ༗ใ͕͋Δ͜ͱͰॴ༗͍ͯ͠Δ σδλϧΞηοτΛࣗ༝ʹѻ͑Δ • ݱ࣮ੈքʹ͓͚ΔϞϊͷॴ༗ͱಉ͡ • αʔϏεఏڙऀʹΑΔཧ͕ࠔʹͳΔ • ϒϩοΫνΣʔϯʹΑͬͯΠϯλʔωοτ͕ෆࣗ༝ʹͳΔ ͜ͱͰݱ࣮ੈքʹ͍ۙͮͨ • ͭ·ΓϦΞϧ
Slide 26
Slide 26 text
ެ։伴҉߸ͱిࢠॺ໊
Slide 27
Slide 27 text
ϒϩοΫνΣʔϯʹ͓͚Δެ։伴҉߸ٕज़ • ൿີʹ͢Δ͖伴ʢൿີ伴ʣͱͦΕʹରԠ͢Δެ։͢Δ ͖伴ʢެ։伴ʣͷϖΞΛ࣋ͭ • ͋Δϝοηʔδͷϋογϡରͯ͠ൿີ伴Λͬͯిࢠॺ໊ Λ࡞͢Δ • ࡞͞Εͨిࢠॺ໊ͱϝοηʔδΛͬͯެ։伴ΛಘΔ ͜ͱ͕Ͱ͖Δ • ެ։͞Ε͍ͯΔ伴ͱಘͨ伴͕Ұக͍ͯ͠Εɺॺ໊ͨ͠伴 ͷݕূ͕Ͱ͖Δ • ͍ΘΏΔ҉߸Ͱͳ͘ɺిࢠॺ໊ͷͳ͠
Slide 28
Slide 28 text
ϒϩοΫνΣʔϯʹ͓͚Δެ։伴҉߸ٕज़ • جຊతʹɺପԁۂઢ҉߸ʢElliptic Curve Cryptography:ECCʣΛͬͨପԁۂઢDSAʢElliptic Curve Digital Signature Algorithm: ECDSAʣ͕༻͍ΒΕΔ • ۂઢɺsecp256k1͕༻͍ΒΕΔ͜ͱ͕ଟ͍ • Bitcoin͕࠾༻ɺEthereumै • NISTʹ࠾༻͞Ε͓ͯΒͣɺSECGʹ࠾༻͞Ε͍ͯΔύϥ ϝʔλ • ҉߸/෮߸ʢRSAʣͰͳ͘ిࢠॺ໊
Slide 29
Slide 29 text
https://ja.wikipedia.org/wiki/%E9%9B%BB%E5%AD%90%E7%BD%B2%E5%90%8D
Slide 30
Slide 30 text
ΞυϨεͱτϥϯβΫγϣϯ • ൿີ伴ʹରԠ͢Δެ։伴ʹϋογϡؔΛ͔͚ͨͷΛ ΞυϨεͱݺͿɻ • ϒϩοΫνΣʔϯ্ͰɺΞΧϯτ = ΞυϨε • ϒϩοΫνΣʔϯ্ൃߦ͢Δॲཧͷ୯ҐΛτϥϯβΫ γϣϯͱݺͿ • ॲཧ༰ʹൿີ伴Ͱిࢠॺ໊͢Δ͜ͱͰɺ͋Δτϥϯβ Ϋγϣϯ͕ͲͷΞυϨε͔Βൃߦ͞Εͨͷ͔Λ୭Ͱ ݕূͰ͖Δ
Slide 31
Slide 31 text
୭͕Ͳ͏͍͏τϥϯβΫγϣϯΛൃߦ͔ͨ͠Θ͔Δ https://etherscan.io/
Slide 32
Slide 32 text
ඇதԝूݖͳWebɺWeb3
Slide 33
Slide 33 text
தԝूݖͳWeb͔Βͷ٫ • Web 2.0 ͷΠϯλʔωοτͰɺதԝूݖͳαʔϏεΛ ௨ͯ͡ݸͱݸ͕ΓͱΓͰ͖ΔΑ͏ʹͳͬͨ • ϒϩάಈըɺςΩετνϟοτԻ • ௨՟ͷΓͱΓαʔϏε͕ͬͯ͘ΕΔ • XXX Pay • ҰํͰɺϓϥΠόγʔσʔλαʔϏεఏڙऀʹΑΓ ཧ͞Ε͍ͯΔ • ϒϩοΫνΣʔϯ/EthereumͷొͰΞϓϦέʔγϣϯ ඇதԝूݖతʹ࣮ߦͰ͖ΔΑ͏ʹͳͬͨ
Slide 34
Slide 34 text
Web3 • ϒϩοΫνΣʔϯΛͬͨΞϓϦέʔγϣϯϓϥοτ ϑΥʔϜͷొʹΑΓɺ௨՟ͷΓͱΓΞϓϦέʔ γϣϯ͕ඇதԝूݖతʹཧ͞ΕΔΑ͏ʹͳͬͨ • ϒϩοΫνΣʔϯΛ͏͜ͱͰཧऀෆࡏͰݸͱݸͷ ΓͱΓ͕ՄೳʹͳΔ • ৽͍͠Webͱ͍͏ҙຯͰWeb3ͱ ݺͼɺEthreumΛѻ͏ϥΠϒϥϦ Web3ͱ໊͚ΒΕ͍ͯΔ
Slide 35
Slide 35 text
Ethereum Wallet • Ethereumʹ͓͚Δ伴ཧͷ୯Ґɻ • ൿີ伴͚ͩͰԿʹ͑ͳ͍ͷͰҎԼͷػೳ͕ηοτ • ϊʔυͷଓใ • τϥϯβΫγϣϯͷੜ • τϥϯβΫγϣϯͷॺ໊ • ͦͷଞɺαʔϏε͔Βൿີ伴ΛӅṭͨ͠··ΞΫηε Ͱ͖ΔAPI • ࢄͳWebΛࢦ͢ͷͰɺ͜ΕΒΛWebϒϥβͰར༻ Ͱ͖Δඞཁ͕͋Δ
Slide 36
Slide 36 text
ϒϥβͷΠϯδΣΫγϣϯ • WalletΛࡌͨ͠ϒϥβͰɺwindow.ethreum͘͠ window.web3ͱ͍͏ΦϒδΣΫτ͕ΠϯδΣΫτ͞ΕΔ • Metamaskͱ͍͏ϒϥβ֦ு͕༗໊ • αϜεϯHTCͳͲ͕εϚʔτϑΥϯϓϦΠϯͳWallet Λఏڙ͍ͯ͠Δ • Opera͕CryptoWalletʹରԠ • αʔϏεఏڙऀΠϯδΣΫτ͞ΕͨWeb3Λར༻͢Δ͜ ͱͰɺSmartContractͷΞΫηεΛ࣮ݱͰ͖Δ
Slide 37
Slide 37 text
window.web3
Slide 38
Slide 38 text
ඇதԝूݖతͱ͍͏ͷͷ • શͯΛϒϩοΫνΣʔϯ্Ͱॲཧ͢Δͷ͍͠ • εέʔϥϏϦςΟ • ࣮ߦίετར༻ऀ͕ෛ୲ • ݱ࣮తʹɺΦϑνΣʔϯͱซ༻͢Δඞཁ͕͋Δ • Ͳ͜·ͰΦϑνΣʔϯΛ͏͔Έ • ྫ͑ɺήʔϜʹ͓͍ͯཧऀෆࡏͰָ͍͔͠Ͳ͏͔ • ΦϑνΣʔϯΛར༻͢Δ߹ɺͳΜΒ͔ͷํ๏ͰΦϯ νΣʔϯͷΞΧϯτΛඥ͚Δํ๏͕ඞཁ • ͭ·ΓΦϑνΣʔϯͰͷೝূػೳ
Slide 39
Slide 39 text
WebೝূΛऔΓר͘ݱঢ়
Slide 40
Slide 40 text
ύεϫʔυೝূ • ਪଌෆՄೳͳจࣈྻʹ͢Δඞཁ͕͋Δ • αʔϏεؒͰಉ͡ͷΛ͏͖Ͱͳ͍ • ྲྀग़͢Δ • ଟཁૉೝূͷಋೖ • ଟཁૉೝূΛ্ͬͨͰϦΧόϦʔͷ֬อ • ݁ՌɺهԱ͚ͩͰྑ͍͓खܰͳೝূͳͷʹϢʔβʔͷ ෛ୲͕େ͖͍
Slide 41
Slide 41 text
ೝূʹར༻͞ΕΔཁૉ • ࣝ: ύεϫʔυൿີͷ࣭ͳͲຊਓ͔͠Βͳ͍ͷ • ॴ༗: ηΩϡϦςΟΩʔɺSMSͳͲຊਓ͔͍࣋ͬͯ͠ͳ͍ σόΠε • ੜମ: ࢦɺ੩຺ɺ࠼ɺإͳͲຊਓͷੜମใ
Slide 42
Slide 42 text
FIDO2/Web Authn • ύεϫʔυೝূ͔Βͷ٫Λࢦͯ͠FIDO Aliance͕ FIDO2ϓϩδΣΫτΛਐΊ͍ͯΔ • ϒϥβͰͷFIDOೝূΛ࣮ݱ͢ΔͨΊͷWeb Authn https://nulab.com/ja/blog/nulab/webauthn_demo/ https://techblog.yahoo.co.jp/advent-calendar-2018/webauthn/
Slide 43
Slide 43 text
FIDOೝূͷྲྀΕ https://www.slideshare.net/FIDOAlliance/fido2-154731613
Slide 44
Slide 44 text
IDཧ͔Βͷྨ • Centralized IdentityɿதԝूݖܕID • User-Centric IdentityɿϢʔβʔத৺ID • Self-Sovereign IdentityɿࣗݾओݖܕID • ͜ͷลͷɺൃݴऀʹΑͬͯ݁ߏϒϨ͕͋Δ ࢀߟ https://www.dappsway.com/entry/history-of-digital-id
Slide 45
Slide 45 text
Centralized IdentityɿதԝूݖܕID • Centralized IdentityɿதԝूݖܕID • ΄ͱΜͲͷαʔϏεͪ͜Β • ཧऀʹɺೝࣝใʢϝʔϧΞυϨεͳͲʣ ͱύεϫʔυΛొ͢Δ͜ͱͰར༻ՄೳʹͳΔ • ࣮؆୯ • αʔϏεͷϩοΫΠϯ • αʔϏεຖʹIDͱPWͷཧ͕ඞཁ
Slide 46
Slide 46 text
User-Centric IdentityɿϢʔβʔத৺ID • ෳͷαʔϏεͰόϥόϥʹొ͘Β͍ͳΒڧྗͳ̍ͭ Λ͍ճ͢΄͏͕ศར • ιʔγϟϧϩάΠϯͱ͔SSOͱ͔OAuthͱ͔ • ڧྗͳID Providerͷू • Google / Facebook / Amazon / Apple • ͜͜ͰڊਓͷݞʹΒ͟Δෛ͑ͳ͍
Slide 47
Slide 47 text
ϒϩοΫνΣʔϯͱWebೝূ
Slide 48
Slide 48 text
ϒϩοΫνΣʔϯͱWebೝূ • ͲͪΒެ։҉߸伴ٕज़͕ॏཁͳҐஔΛ͠Ί͍ͯΔ • ͲͪΒΞΧϯτ/ਓΛೝࣝ͢Δखஈʹɺൿີ伴ʹΑΔ ॺ໊ͱެ։伴ʹΑΔݕূΛར༻͍ͯ͠Δ • Webೝূɺ͍͔ʹͯ͠ൿີ伴ΛͨͤΔ͔͕՝ • ϒϩοΫνΣʔϯɺൿີ伴Λ࣋ͭඞཁ͕͋Γɺࣾձʹ ͓͚Δ͍ΈͪΛࡧ͍ͯ͠Δஈ֊ • ϒϩοΫνΣʔϯɺWebೝূͷ૬ޮՌʹΑΓٸܹʹྲྀ ߦ͢ΔՄೳੑ
Slide 49
Slide 49 text
Self Sovereign IDentity ʢSSIDʣ • SSIDɺಛఆͷཧओମʹґଘͤͣɺϢʔβʔࣗͷ ΞΠσϯςΟςΟΛࣗΒͰ࡞Γग़͢͜ͱΛతͱ͍ͯ͠Δ • ࣗͷΞΠσϯςΟςΟͷཧࣗࣗͰ͢Δ • ଞਓʢཧऀʣʹ͖ʹΘΕ͍͍ͯͷͰͳ͍ • ࣗͷ伴Λͬͯॺ໊͠ɺެ։伴ʢΞυϨεʣʹΑͬͯݕ ূՄೳͳϒϩοΫνΣʔϯͰʁ • ࢀߟ https://www.jnsa.org/seminar/2018/0126/data/2-3.pdf
Slide 50
Slide 50 text
Distributed IDentityʢDIDʣ • ࣗݾओݖͳΞΠσϯςΟςΟͲ͏อଘ͞ΕΔ͖͔ • ϒϩοΫνΣʔϯࢄཧ͞ΕͨγεςϜͰ૬ੑ͕ྑ͍ • ϒϩοΫνΣʔϯͷ༗ྗͳϢʔεέʔεͷ1ͭͱͯ͠ظ ͞Ε͍ͯΔ
Slide 51
Slide 51 text
ϒϩοΫνΣʔϯαʔϏεʹ͓͚Δ ύεϫʔυϨεͳϢʔβʔೝূͷ࣮ݱ
Slide 52
Slide 52 text
Λ࢝ΊΑ͏ʂ https://mch.gg/start টίʔυ ʮTHA4ʯ Λೖྗʂ
Slide 53
Slide 53 text
No content
Slide 54
Slide 54 text
Ͷɺ؆୯Ͱ͠ΐʁ
Slide 55
Slide 55 text
ೝূϑϩʔ
Slide 56
Slide 56 text
ϑϩʔղઆ • νϟϨϯδϨεϙϯεೝূ+ిࢠॺ໊Λར༻ • ಉ͡ϝοηʔδ͔Βಉ͡ॺ໊͕ಘΒΕΔʢRFC 6979ʣ ͷͰɺϦϓϨΠΞλοΫΛ͙ͨΊʹɺຖճҧ͏νϟϨϯ δΛར༻͢Δ • ॺ໊ͱETHΞυϨεΛαʔόૹ৴ • ॺ໊ͱϝοηʔδʢνϟϨϯδʣΑΓެ։伴͕ٻ·Δ • ެ։伴͔ΒETHΞυϨε͕ٻ·ΔͷͰݕূՄೳ • ΄΅FIDOೝূͷྲྀΕͱಉ͡
Slide 57
Slide 57 text
Ethereumʹ͓͚Δҙϝοηʔδͷॺ໊ • EIP-191 Signed Data Standard • EIPʹͯنఆ͞Εͨϝοηʔδॺ໊ͷඪ४༷ • WalletΛܦ༝ͯ͠ɺҙͷϝοηʔδʹॺ໊͕Ͱ͖Δ • web3.jsͩͱweb3.eth.personal.sign(msg, address, pw)Ͱॺ ໊͕Ͱ͖Δ • ॺ໊ͱϝοηʔδ͔ΒΞυϨε͕ࢉग़Ͱ͖ΔͷͰαʔόʔ ͰݕূՄೳ
Slide 58
Slide 58 text
࣮ࡍʹͬͯΈͯྑ͍ೝূͳͷ͔ʁ • ͍ΘΏΔʮॴ༗ʯใ͚ͩͰೝূ͍ͯ͠Δ • εϚʔτϑΥϯPCͷೝূʹ͋ΘͤͯੜମೝূPWΛඞ ཁͱ͢Δ • FIDOͷࢥʹ͍ۙͣ • εϚϗPC౪·ΕΔͱ౪·ΕΔ • ͦ͏͍ΘΕ·ͯ͠ɺɺ • 伴ʹΞΫηε͢Δํ๏ࣗͰकΔੈք؍ • ՝ײʹ͍ͭͯޙड़
Slide 59
Slide 59 text
ରԠঢ়گͳͲ • ͪΖΜɺࣄલ४උ͕ඞཁ • Ethereum Wallet͕ඞཁ • ChromeSafariͰ͙͢ʹར༻Ͱ͖ΔΘ͚Ͱͳ͍ • ݁ہΞϓϦͳΓ֦ுػೳΛೖΕ͍ͯΔ͔ΒωΠςΟϒΞ ϓϦͱมΘΒͳ͍ͷͰʁ • ॏཁͳͷɺࣗͰ伴ΛཧͰ͖͍ͯΔ͜ͱ
Slide 60
Slide 60 text
ͦ͏͍͏ͷ୭͔͕ղܾ͠ ͯ͘ΕΔʂ
Slide 61
Slide 61 text
ϒϩοΫνΣʔϯ͕ීٴͨ͠ੈͷத ୭Ͱిࢠॺ໊͕Ͱ͖Δੈք
Slide 62
Slide 62 text
σδλϧΞΠσϯςΟςΟ
Slide 63
Slide 63 text
ͦͦΞΧϯτͷ৴པͱ • KYC͢Δ͜ͱͰΞΧϯτͱݱ࣮Λ݁ͼ͚ͭΔ • ҰਓҰͭͷൿີ伴ΛKYC͢Δ • ϚΠφϯόʔΧʔυ • ݖརΛߪೖ͢Δ • ձһݖ • ͋Δఔͷ͓ۚΛ୲อʹ͢Δ • ΞΧϯτʹඥ͍ͨߦಈཤྺʹΑͬͯ৴པ͞ΕΔ͖ • ϒϩοΫνΣʔϯʹه͞Ε͍ͯΔ • αʔϏεͷαʔό͕ه͍ͯ͠Δ • SSIDͷߟ͑͜͜
Slide 64
Slide 64 text
ΞΧϯτͷ৴པ • KYC͢Δ͜ͱͰΞΧϯτͱݱ࣮Λ݁ͼ͚ͭΔ • ҰਓҰͭͷൿີ伴ΛKYC͢Δ • ϚΠφϯόʔΧʔυ • ݖརΛߪೖ͢Δ • ձһݖ • ͋Δఔͷ͓ۚΛ୲อʹ͢Δ • ΞΧϯτʹඥ͍ͨߦಈཤྺʹΑͬͯ৴པ͞ΕΔ͖ • ϒϩοΫνΣʔϯʹه͞Ε͍ͯΔ • αʔϏεͷαʔό͕ه͍ͯ͠Δ • SSIDͷߟ͑͜͜
Slide 65
Slide 65 text
KYCͱσδλϧΞΠσϯςΟςΟ • KYCʢKnow Your Customerʣ ݩ֬ೝ • ΠϯελͱϦΞϧͷࣗಉ͔͡ʁ • ͦͦਓ͕ؒ࣋ͭΞΠσϯςΟςΟ1ͭͰ͋Δඞཁͳ ͍ͷͰʁ • KYCͱσδλϧͷΞΠσϯςΟςΟ͋·Γ૬ੑΑ͘ͳ͍ʁ • ͪΖΜ͖ෆ͖ • KYCͰ΄͍͠ͷʮ1ਓ1ͭʯͰ͋ͬͯɺʮݸਓใʯͰ͋Δ ඞཁͳ͍߹͋Δ • ͱ͍͑KYC͕ΓཱͭͷࠃʹकΒΕ͍ͯΔ͔ΒͰ͢ΑͶ
Slide 66
Slide 66 text
ΞΧϯτͷ৴པ • KYC͢Δ͜ͱͰΞΧϯτͱݱ࣮Λ݁ͼ͚ͭΔ • ҰਓҰͭͷൿີ伴ΛKYC͢Δ • ϚΠφϯόʔΧʔυ • ݖརΛߪೖ͢Δ • ձһݖ • ͋Δఔͷ͓ۚΛ୲อʹ͢Δ • ΞΧϯτʹඥ͍ͨߦಈཤྺʹΑͬͯ৴པ͞ΕΔ͖ • ϒϩοΫνΣʔϯʹه͞Ε͍ͯΔ • αʔϏεͷαʔό͕ه͍ͯ͠Δ • SSIDͷߟ͑͜͜
Slide 67
Slide 67 text
ϒϩοΫνΣʔϯձһݖ • ͋ΔτʔΫϯΛ͍࣋ͬͯΔਓ͚ͩͷೖΕΔίϛϡχςΟ • τʔΫϯചΓങ͍Ͱ͖ͨΓ͢Δ • τʔΫϯʹΩοΫόοΫΛ࡞Δ͜ͱͰ͖Δ • ήʔϜΞΠςϜͳͲʹ͍ͬͯΔସෆՄೳͳτʔΫϯͷ ॴ༗ͱಉ͡ • ҆ʹΔͱطଘͷ๏ྩʹҾ͔͔ͬΔՄೳੑ͕͋ΔͷͰ ਅ໘ʹߟ͍͑ͯΔਓઐՈʹ૬ஊ͍ͯͩ͘͠͞ • ΰϧϑձһݖ
Slide 68
Slide 68 text
ϏσΦࢹௌݖτʔΫϯ https://blockpunk.net/
Slide 69
Slide 69 text
ΞΧϯτͷ৴པ • KYC͢Δ͜ͱͰΞΧϯτͱݱ࣮Λ݁ͼ͚ͭΔ • ҰਓҰͭͷൿີ伴ΛKYC͢Δ • ϚΠφϯόʔΧʔυ • ݖརΛߪೖ͢Δ • ձһݖ • ͋Δఔͷ͓ۚΛ୲อʹ͢Δ • ΞΧϯτʹඥ͍ͨߦಈཤྺʹΑͬͯ৴པ͞ΕΔ͖ • ϒϩοΫνΣʔϯʹه͞Ε͍ͯΔ • αʔϏεͷαʔό͕ه͍ͯ͠Δ • SSIDͷߟ͑͜͜
Slide 70
Slide 70 text
σδλϧͳߦಈཤྺ • SSID͕ࢦͯ͠ϒϩοΫνΣʔϯ͕ಘҙͳ෦ • ʮ݈શͳऔҾΛ͍ͯ͠Δਓ͔ͩΒྑ͍ਓͩΖ͏ʯ • ϒϩοΫνΣʔϯͷઃܭτϥετϨεͰ͋Δ͕ɺਓͷ அτϥετϑϧʹߦΘΕΔ͕͋Δ • ສԁͷσδλϧΞηοτΛɺͦͷਓͰ͋Δͱ͍͏৴ པͰି͠ग़͢͠Δ • ݈શͳऔҾͱʁ • PageRankΈ͍ͨͳࢀরʹΑͬͯஅ͞ΕΔͷͰʁ
Slide 71
Slide 71 text
ϦΞϧΠϕϯτࢀՃऀ͚ه೦τʔΫϯ
Slide 72
Slide 72 text
ਓؒͱൿີ伴
Slide 73
Slide 73 text
ΞΧϯτͱ • ͍··ͰͷͰɺൿີ伴 = ΞΧϯτ • ແݶʹΞΧϯτ͕࡞Ͱ͖Δ • ແݶ: ܾΊΒΕͨૉະຬͷͷ • ਓؒͷΑΓΔ͔ʹେ͖ͳ • ΞΧϯτʹΑͬͯԿΛ֬ೝ͍ͨ͠ͷ͔ʁ
Slide 74
Slide 74 text
ྫ͑ήʔϜ • Α͘Δखஈͱͯ͠ɺϩάΠϯϘʔφε৽نΞΧϯτ ͷ༏۰ࢪࡦ͕͋Δ • ຖϩάΠϯ͢Δ͜ͱͷΠϯηϯςΟϒ • ॳճ1ϲ݄ແྉతͳͷ • ͭ·ΓΞΧϯτ୯Ґʹ1͚ͩڐ͞ΕΔΠϯηϯςΟϒ • ίετͰແݶʹΞΧϯτ͕ੜͰ͖Δ߹ɺ͜ͷख๏ ةݥ • ैདྷ͜ΕɺAppleɺGoogleͳͲ͕क͍ͬͯͨน • ैདྷͷΠϯηϯςΟϒઃܭ͕શ͘ʹཱͨͳ͍ੈք͕๚ ΕΔ
Slide 75
Slide 75 text
ྫ͑༧γεςϜ • நબͱ૬ੑ͕ѱ͍ • KYCͳ͍ঢ়ଶͰ͋ΕɺΞΧϯτͷ͚ͩ༗རʹͳΔ • Ұਓͷਓ͕ෳͷΞΧϯτΛ͍࣋ͬͯΔ͔Ͳ͏͔ͦ ΕͦΕͰWebશମͷ՝ • Fingerprintతͳͭ • ࡢࠓCookieͷ෩ͨΓ͕Α͘ͳ͍ • ҿ৯ళͰ͋Εॺ໊ͱॴ༗ͷূ໌ͳͷͰΘ͔Γ͍͢ • No ShowΈ͍ͨͳͷผͷ • ༗ޮͳΞΧϯτͱ͢Δ͔ → ձһݖͷʹΔ
Slide 76
Slide 76 text
伴ͷฆࣦ = IDͷࣦʁ • ैདྷɺཧऀ͕ฆࣦʹ͍ͭͯόοΫΞοϓͯ͘͠Εͨ • ʮύεϫʔυ͕Θ͔Βͳ͍ํͪ͜Βʯ • ະདྷͷੈքͰɺ伴ͷฆࣦ͕ΞΠσϯςΟςΟͷࣦ • 伴ߦαʔϏε • 伴Ͱͳ͘τʔΫϯʹΞΠσϯςΟςΟΛͨͤΔ • େͳͷ伴ࣗମͰͳ͘ॺ໊ͱެ։ใʢΞυϨεʣͳ ͷͰʁ • ॺ໊ as a serviceͷग़ݱ • ͢ͰʹEthereumʹContractWalletͱ͍͏ͷ͕͋Δ
Slide 77
Slide 77 text
ੜମใ • ੜମใ͔Β伴Λੜ͢Δٕज़͋ΔΒ͍͠ • https://it.impressbm.co.jp/articles/-/18043 • ͦ͏͍͏ͱ͜Ζ͔Βಥഁޱ • KYCͱΞΠσϯςΟςΟͷʹΔ • ֊తܾఆੑΥϨοτͱ૬ੑ͕Α͍͔Ͷ • ϚελʔͱͳΔ128bitsͷΤϯτϩϐʔ͔ΒͳΔγʔυ ͔Βɺm/i/0/kͷΑ͏ͳ֊ߏͰܾఆతʹൿີ伴 Λੜ
Slide 78
Slide 78 text
·ͱΊ1 • ϒϩοΫνΣʔϯͷෆՄٯੑɺඇதԝूݖੑʹΑΓσδλ ϧͷใ͕ϦΞϧʹۙͮ͘ • ϒϩοΫνΣʔϯʹΑΓɺʮ伴ʯʹʮࢿ࢈ʯ͕ͯΔ • ҉߸௨՟ • ձһݖͷΑ͏ͳτʔΫϯ • ϒϩοΫνΣʔϯʹ͓͚Δཤྺ • WebೝূύεϫʔυϨεڊେͳཧऀ͔Βͷ٫ͱ ͍͏՝Λ๊͍͑ͯΔ
Slide 79
Slide 79 text
·ͱΊ2 • ϒϩοΫνΣʔϯαʔϏεʹ͓͍ͯύεϫʔυϨε࣮ݱ ͍ͯ͠Δ • WebೝূͱϒϩοΫνΣʔϯͷ૬ޮՌʹΑΓ୭Ͱࣗ ࣗͷ伴Ͱిࢠॺ໊͕Ͱ͖Δੈք͕͘Δ • ୭Ͱిࢠॺ໊͕Ͱ͖ΔੈքͰͲ͏͍͏͜ͱ͕ͱͳ Δ͔ໝ • σδλϧͷΞΠσϯςΟςΟʹ͍ͭͯͪड͚Δ՝ΛΈ ΜͳͰߟ͍͖͑ͯ·͠ΐ͏