Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
暗号
Search
いっしー
September 12, 2019
0
110
暗号
いっしー
September 12, 2019
Tweet
Share
More Decks by いっしー
See All by いっしー
準同型暗号
issy
0
110
パブリックチェーンとプライベートチェーン
issy
0
100
blockchain_scalability
issy
0
97
blockchain_kyoto_14
issy
0
100
blockchain_kyoto_13
issy
0
120
blockchain_kyoto_12
issy
0
130
blockchain勉強会_11.pdf
issy
0
170
Blockchain Kyoto #7 〜ブロックチェーン関連で読んだ本紹介〜
issy
0
150
Blockchain Kyoto #6 〜ブロックチェーンが分からなくなった話〜
issy
0
340
Featured
See All Featured
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
The Art of Programming - Codeland 2020
erikaheidi
55
13k
BBQ
matthewcrist
89
9.8k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
285
13k
Intergalactic Javascript Robots from Outer Space
tanoku
272
27k
A designer walks into a library…
pauljervisheath
207
24k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
9
810
Building Adaptive Systems
keathley
43
2.7k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.7k
How to Ace a Technical Interview
jacobian
279
23k
jQuery: Nuts, Bolts and Bling
dougneiner
64
7.9k
Building Applications with DynamoDB
mza
96
6.6k
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
͓·͚
͓·͚̎