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いっしー
September 12, 2019
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いっしー
September 12, 2019
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Transcript
Blockchain Kyoto #17 2019/09/12 @גࣜձࣾϋευΡ
1. ΈΜͳͰࣗݾհ 2. ൃද ɾ҉߸ʢ͍͠ͷʣ ɾϒϩοΫνΣʔϯΛΔલʹ͓͖ͬͯ͘͜ͱʢߥా͞ Μʣ ɾϢʔεέʔεΛٞ͠Α͏ 3. ҿΈձ
Blockchain Kyoto #17
Blockchain Kyoto #17 ʮ҉߸ʯ 2019/09/12 @גࣜձࣾϋευΡ
ੴ ൏ޔʢIshino Shungoʣ ϑϦʔϥϯεWEBΤϯδχΞ ࣗݾհ
҉߸ͷྺ࢙ɺ҉߸࡞ऀͱ҉߸ղಡऀͱͷԿੈ لʹΘͨΔઓ͍ͷྺ࢙Ͱ͋Γɺͦͷઓ͍ͱ͖ ʹྺ࢙ͷྲྀΕΛܶతʹม͑Δ͜ͱʹͳͬͨͷ ܉֦ڝ૪ͳͷͰ͋Δɻ ग़యɿαΠϞϯɾγϯʰ҉߸ղಡʱ
None
• ݹ͘لݩલ19ੈلࠒ͔ΒΘΕΔɻ • ฏจΛ1จࣈ͔ෳจࣈ୯ҐͰผͷจࣈه߸ʹ ஔ͖͑Δ͜ͱͰ҉߸Խ͢Δɻ • ෮߸ʹஔ͖͑ͷϧʔϧΛΔඞཁ͕͋Δɻ ࣈࣜ҉߸
ฏɹจɿΜʹΜ͖ͭͶɻ ҉߸จɿ͏ͷ͏͜ͳͻɻ ΞϧΰϦζϜɿจࣈ୯ҐͰNจࣈͣΒ͢ɻ 伴ɿN=3 ૯ͨΓͰղಡ͕Մೳɻ γʔβʔ҉߸
୯Ұࣈࣜ҉߸ • ฏจͷ1จࣈΛҟͳΔه߸จࣈʹஔ͖͑Δɻ • ෮߸ʹஔ͖͑දʢ伴ʣΛΔඞཁ͕͋Δɻ • සੳʹΑΓղಡ͕ՄೳʹͳΔɻ
• υΠπ͕༻ͨ͠҉߸ػɻ • 伴159,000,000,000,000,000,000௨Γ • 伴ຖมߋ͞Εɺ̍ϲ݄ͷ伴ΛΤχάϚΛ ͏ਓʹࢠͰ͍ͯͨ͠ɻ • ΠΪϦεͷΞϥϯɾνϡʔϦϯάΒ͕ղಡ •
Ҏ߱ɺ҉߸ʹίϯϐϡʔλ͕ΘΕ࢝ΊΔɻ ΤχάϚ
伴ૹ • ༧Ί伴Λ҉߸༻ऀશһʹ͢Δඞཁ͕͋Δɻ • ҉߸Խͤͣ伴ΛૹΔͱ౪·ΕΔɻ • ҆શʹ伴Λૹ͢Δʹ͓͔͔ۚ࣌ؒΔɻ
ެ։伴҉߸ σϑΟʔɺϔϧϚϯɺϚʔΫϧΒʹΑͬͯൃදɻ
ిࢠॺ໊
ެ։伴҉߸ • ΞΠσΞ͍͍͕ɺຊʹͦΜͳ͜ͱ͕Ͱ͖Δ ͷ͔ʁ
Rivest Shamir Adelman ެ։伴҉߸
RSA҉߸
RSA҉߸ ฏจN ҉߸จD
RSA҉߸ͷ՝ • ҆શʹӡ༻͢Δʹ伴Λ͘͢Δඞཁ͕͋Δɻ • 伴ੜͷํͰ੬ऑͳ伴͕ੜ͞Ε͏Δɻ
ପԁۂઢ҉߸
ପԁۂઢ҉߸
ପԁۂઢ҉߸
ପԁۂઢ҉߸ NาਐΜͩ࣌ʹͲ͜ʹߦ͔͘؆୯ʹ͔Δɻ ࠓ͍Δॴ͕Կา͔ΛΔͷ͍͠ɻ
ପԁۂઢ҉߸ NาਐΜͩ࣌ʹͲ͜ʹߦ͔͘؆୯ʹ͔Δɻ ࠓ͍Δॴ͕Կา͔ΛΔͷ͍͠ɻ
ପԁۂઢ҉߸
·ͱΊ ೋઍͷ͖ʹΘͨΓɺ҉߸࡞ऀൿີΛकΔͨΊʹઓ ͍ɺ҉߸ղಡऀൿີΛͨ͘ΊʹྗΛਚ͖ͯͨ͘͠ɻ ࠓɺใઓ૪ͷউऀʹͳΖ͏ͱ͍ͯ͠Δͷ໌Β͔ʹ҉ ߸࡞ऀͷํͰ͋Δɻ ͔͠͠ɺղಡෆೳͱݴΘΕͨ҉߸ͲΕΈͳɺ͔Εૣ ͔Ε҉߸ղಡऀʹ۶͍ͯ͠Δɻ ग़యɿαΠϞϯɾγϯʰ҉߸ղಡʱ
͓·͚
͓·͚̎