February 2015
Intermediate to advanced
200 pages
4h 48m
Japanese
Content preview from Bluetooth Low Energyをはじめよう
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175
セキュリティの 強 化
以下の3点 で セ キュリティが 強 化され た 。
セキュアなペ アリング（LE Secure Connections）
セキュリティマネージャに、よりセキュアなペアリング（ 033ペ ージ の「 セキュリティ手
順 」を参照 ）を行うための LE Secure Connectionsプ ロ セ ス が 追 加 さ れ た（ Bluetooth
Core Specification 4.2 Vol 3, Part C Section 10および Part H）。 こ れ は P-256
楕円曲線暗号を利用し、盗聴者が存在する場合であってもセキュリティを確保できるもので、
ペ アリング の フェー ズ 2でSTK（短期鍵）ではなくLTK（長期鍵）が生成される。また、セキュ
アなペアリングのみを受け付ける LEセキュリティモード1レベル4が 新 設された 。
リンク層でのプライバシー機能（Link Layer Privacy）
リンク層でのプライバシー機能（053ページを参照）が追加された（Bluetooth Core
Specification 4.2 Vol 6, Part B Section 6）。これはホストではなくコントローラーでプ
ライベートアドレスの解決を行うため、解決済みアドレスでホワイトリストとの突き合せがで
きるようになり、デバイスのフィルタリングが可 能となる。バージョン4.1で は プ ラ イ ベ ート ア
ドレス（定期的に ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.