Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
暗号学的ハッシュ関数 / Cryptographic Hash Function
Search
Kenji Saito
PRO
June 14, 2025
Technology
87
0
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
暗号学的ハッシュ関数 / Cryptographic Hash Function
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7回で使用したスライドです。
Kenji Saito
PRO
June 14, 2025
More Decks by Kenji Saito
See All by Kenji Saito
Fall 2026: A Guide & Workshop on Using AI for Academic Paper Writing
ks91
PRO
0
33
FinTech 5-6 : The World of Apps
ks91
PRO
0
54
終わらない幼年期とそのための下部構造・社会資本 / The Never-Ending Childhood and the Infrastructure and Social Capital Needed to Support It
ks91
PRO
0
28
FinTech 3-4 : Internet Technology and Governance
ks91
PRO
0
72
2026 秋 生成AI を活用した論文執筆ガイド/ワークショップ / Fall 2026: Guide and Workshop on Writing Papers Using Generative AI
ks91
PRO
0
140
AIとビジネス・メガトレンド 〜 サイバネティクス的経営観 / AI and Business Megatrends: A Cybernetic Perspective on Management
ks91
PRO
0
42
FinTech 1-2 : Overview of FinTech
ks91
PRO
0
160
アカデミーキャンプ 2026秋「位置ゲーに秀でよ!ウチらとヤツらのゲーム・デザイン」DAY 4 / Academy Camp 2026 Fall - Excel at Location-Based Games! Our and Their Game Design DAY 4
ks91
PRO
0
65
アカデミーキャンプ 2026秋「位置ゲーに秀でよ!ウチらとヤツらのゲーム・デザイン」DAY 3 / Academy Camp 2026 Fall - Excel at Location-Based Games! Our and Their Game Design DAY 3
ks91
PRO
0
75
Other Decks in Technology
See All in Technology
ストレスなくAIと付き合いたい!こんなときどうしてる?
namiki64
2
400
NDIでApple Vision Proにリアルタイム映像送信
jyouryuusui
0
120
スキマバイトという雇用形態は存在しないので、雇用期間1日のアルバイト契約を事業者とワーカーが結ぶ手続きを支えるのがタイミーなんです
akitoshiga
0
200
LambdaWebFunctionsを試してみた / exploring-lambda-web-functions
koukihosaka
0
320
10年後、Engineering 行為を剥奪されるとして、わたしたちは、どう、何を創ればいいだろうか。 / If Engineering Is Taken Away in 10 Years, How and What Should We Create?
bitkey
PRO
1
190
『SAR衛星データ解析入門』のご紹介とその応用
syuchimu
0
120
AI駆動開発の時代になったのでトヨタ生産方式から見直す
terurou
7
6k
Cognition AI Japan - ウェビナー2_テストQA_運用監視
cogakira
0
140
Claude の新機能を、 出た日に触って社内に届けるまで
rfdnxbro
1
170
Post AI時代のリファクタリング実践記 / Refactoring in the post AI era
kaminashi
1
230
Rustuna: Rustによる高速なOptuna実装
pfn
PRO
0
190
"優秀な誰か"の下位互換にならないために
yut0naga1_fa
1
1.8k
Featured
See All Featured
Fantastic passwords and where to find them - at NoRuKo
philnash
53
4k
Visualization
eitanlees
153
17k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
irinanazarova
9
1.6k
The innovator’s Mindset - Leading Through an Era of Exponential Change - McGill University 2025
jdejongh
PRO
1
380
Digital Projects Gone Horribly Wrong (And the UX Pros Who Still Save the Day) - Dean Schuster
uxyall
1
3.4k
Ruling the World: When Life Gets Gamed
codingconduct
0
400
Become a Pro
speakerdeck
PRO
31
6.3k
Building Adaptive Systems
keathley
44
3.2k
Deep Space Network (abreviated)
tonyrice
0
370
The browser strikes back
jonoalderson
0
1.8k
Taking LLMs out of the black box: A practical guide to human-in-the-loop distillation
inesmontani
PRO
3
2.4k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
tammyeverts
11
1.1k
Transcript
Generated by Stable Diffusion 3.5 — 2025 7 (WBS) —
2025 7 — 2025-06 – p.1/12
https://speakerdeck.com/ks91/collections/fintech-2025-summer — 2025 7 — 2025-06 – p.2/12
( 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 7 — 2025-06 – p.3/12
LAZE SOFTWARE https://lazesoftware.com/ja/tool/hash/ SHA (Secure Hash Algorithm) SHA (NIST) (
) — 2025 7 — 2025-06 – p.4/12
( ) ( ) ↔ ← ← — 2025 7
— 2025-06 – p.5/12
( ) ( ) ( 16 ) SHA Secure Hash
Algorithm ( ) 1 : — 2025 7 — 2025-06 – p.6/12
SHA-1 https://shattered.it SHA-1 160 2017 2 Google (CWI) — 2025
7 — 2025-06 – p.7/12
H (pre-image resistance) h h = H(m) m 2 (
) (second pre-image resistance) m1 H(m1 ) = H(m2 ) m2 ( m1 = m2 ) ( ) 256 8 . . . — 2025 7 — 2025-06 – p.8/12
160 256 . . . . . . 8.8 ×
1023 km 1023+6 mm 160 1,000 103 16 1016×3 1029 mm 160 1048 1 — 2025 7 — 2025-06 – p.9/12
— 2025 7 — 2025-06 – p.10/12
50% 253 50% 23 OK n 2n 2 160 80
SHA-1 (160 ) — 2025 7 — 2025-06 – p.11/12
— 2025 7 — 2025-06 – p.12/12