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デジタル署名 / Digital Signature

Sponsored · Ship Features Fearlessly Turn features on and off without deploys. Used by thousands of Ruby developers. →
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June 14, 2025
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デジタル署名 / Digital Signature

早稲田大学大学院経営管理研究科「フィンテック ─ 金融革新とインターネット」2025 夏のオンデマンド教材 第8回で使用したスライドです。

Avatar for Kenji Saito

Kenji Saito PRO

June 14, 2025

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Transcript

  1. Generated by Stable Diffusion 3.5 — 2025 8 (WBS) —

    2025 8 — 2025-06 – p.1/9

  2. https://speakerdeck.com/ks91/collections/fintech-2025-summer — 2025 8 — 2025-06 – p.2/9

  3. ( 20 ) 1 ↑ • 2 ↓ 2025 •

    3 • 4 (TCP/IP ) • 5 • 6 • 7 • 8 ↑ • 9 ↓ 2024 ( ) 10 World Wide Web 11 Web API 12 * 13 git GitHub 14 (6/23 ) / (2 ) OK / — 2025 8 — 2025-06 – p.3/9

  4. — 2025 8 — 2025-06 – p.4/9

  5. (RSA ) RSA (RSA : Rivest, Shamir, Adleman) . .

    . . . . ECDSA ( DSA : Digital Signature Algorithm) - — 2025 8 — 2025-06 – p.5/9

  6. ( ) < , > ← ( ) ← :

    < , > : : < , , > : OK ( 1 ) NG ( ) — 2025 8 — 2025-06 – p.6/9

  7. ( ) ← CA (Certificate Authority; ) — 2025 8

    — 2025-06 – p.7/9

  8. CA ( ) . . . 1. 2. ( )

    3. (↑) ↑ — 2025 8 — 2025-06 – p.8/9

  9. — 2025 8 — 2025-06 – p.9/9