May 2019
Beginner to intermediate
296 pages
6h 58m
Japanese
Content preview from IT用語図鑑 ビジネスで使える厳選キーワード256
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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.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.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.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.
210
関連用語
用語に関連する話
用語の使用例
危殆化
暗 号の安 全 性が 脅かされる
コンピュータの性能向上や多数のコンピュータの使用で暗号の鍵を見つけられる恐れがあ
ることを危殆化と言う。共通鍵暗号や公開鍵暗号は、鍵を知らない人が解読しようとする
と莫大な数の鍵を調べる必要があり、解読に多くの時間が必要なことが安全の根拠であ
る。大きな数の素因数分解を簡単に実行できる解 法が 発見される場合も同様である。
失効した証明書の管理
秘密鍵が漏えいした場合や暗号
方式が危殆化した場合に証明書
を使えなくすることを失効と言
い、認証局によって証明書失効リ
スト（CRL）に登録される。
サーバー側で失効を確認
CRL に登録済みの失効情報が増
えるとサイズが肥大化し、ダウン
ロードに時間がかかるため、証明
書がCRLに掲載されているか問
い合わせる方法にOCSP がある。
量子コンピュータの可能性
現在、量子力学に基づいたコン
ピュータが研究されており、その
計算性能から素因数分解などを
高速に解ける可能性が期待され
ている。
Keyword
187
▶
きた い か
「鍵の長さが短い暗号化方式はすでに危殆化してて使えないね。」
暗号化と復号
……P201
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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.