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Blockchain Kyoto #2 〜楕円曲線暗号・ビットコインアドレス〜
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いっしー
April 25, 2018
Technology
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Blockchain Kyoto #2 〜楕円曲線暗号・ビットコインアドレス〜
いっしー
April 25, 2018
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Transcript
Blockchain ษڧձ in Kyoto #2
ࣗݾհ ੴ൏ޔ ϑϦʔϥϯεwebϓϩάϥϚʔ
༰
༰
ൿີ伴ͷ࡞ ग़དྷ্͕͕ͬͨެ։伴Λ࡞Δ࣌ʹ͏ ପԁۂઢͷҐ p ΑΓখ͚͞Ε࠾༻͠·͢ɻ ίΠϯΛ͛ͯදͳΒ1ɺཪͳΒ0Λࢴʹॻ͖·͢ɻ ͜ΕΛ256ճ܁Γฦͯ͠256ϏοτͷΛ࡞͠·͢ɻ ※࣮ࡍύιίϯͷཚੜثΛ͍·͢ɻ
ެ։伴ͷ࡞ ପԁۂઢ҉߸ɻ
ެ։伴ͷ࡞ ପԁۂઢ
ެ։伴ͷ࡞ ପԁۂઢ ϏοτίΠϯͰɺಛʹsecp256k1ۂઢΛ͍·͢ɻ ※modׂΓࢉͷ༨ΓΛٻΊΔͷɻ ϓϩάϥϜͰ͍͏ʮ%ʯ ྫʣ5 mod 2 = 1
ެ։伴ͷ࡞
ެ։伴ͷ࡞
ެ։伴ͷ࡞
ެ։伴ͷ࡞
ެ։伴ͷ࡞
ެ։伴ͷ࡞ ɿެ։伴 ɿൿີ伴
ϏοτίΠϯΞυϨεͷ࡞
ϏοτίΠϯΞυϨεͷ࡞
ϏοτίΠϯΞυϨεͷ࡞
·ͱΊ
͓·͚ ൿີ伴ൿີʹ͠·͠ΐ͏ɻ ↓ٗαΠτ