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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049
ではセキュリティの話題だけに関連する特定のモードと手順を紹介する。
セ キュリティ
セ キ ュリティは 、Bluetooth Low Energyワイヤレス技術のコアに組み込まれている。
Bluetooth 4.0コア仕 様への BLEの導入時から、ユーザーデータのセキュアな送信は主
要な設計目標であったし、バージョン4.1ではそれまでの堅固な地盤を踏まえて、さらにこの
原則を強化している。
032ページ の「 セキュリティ・マネージャ（ SM）」で 概 要 を 説 明 し た よ う に 、BLEにおけるセキュ
リティとプライバシーの適用は以下の2本 柱 から成り立っている。
• セキュリティ・マネージャ（とそ の プ ロトコ ル ）
セキュリティ・マネージャは実際の暗号アルゴリズムとプロトコル処理を実装し、2つのデ
バイスがセキュアにデータをやり取りし、プライベートに 互 いを検 出できるようにしている。
これはプロトコルスタック内 部に実 装されるのが 通 常であり、提 供されるハードウェアア
クセラレーションモジュールを利用して、乱数発生、AESを用いたデータの暗号化、そし
てセキュリティ暗号鍵の生成とピアとのやり取りなど、要求される処理を行う。
•GAPのセキュリティの 側 面
GAPでは、セキュリティ関 連のモードと手 順 のセットが 定 義されており、実 装ではこれを
用いてコネクションを信頼し、機密性のあるデータを送ったりピアデバイスの識別情報を
確実に受け取ったりできる。セ
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.