February 2023
Intermediate
256 pages
5h 50m
Japanese
Content preview from アルゴリズム図鑑 増補改訂版 絵で見てわかる33のアルゴリズム
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.
MAC
は、鍵と暗号文を組み合わせた文字列の「ハッシュ値」のようなものを想像す
るとよいでしょう。
MAC
の作成方法には、「
HMAC
＊
5
」、「
OMAC
＊
6
」、「
CMAC
＊
7
」
など、いくつかの種類があります。現在は「
HMAC
」がよく使われています。
5-3
p.144
A B
internet
?
7f05
X
は意の
X
さ通暗号文て
A
さ暗号文
B
さにとに
A B
internet
?
7f05
7f05
?
X X
A B
internet
?
MAC
?
MAC
MAC
X
A B
internet
?
7f05
?
b85c
7f05
A
さ
B
さにと暗号文と
MAC
の暗号文の方
X
さ
と
B
さ暗号文
MAC
計 算 と 「
b85c
」
て
A
さ
MAC
「
7f05
」と一いとり
15
16 17
5
Hash-based MAC
の
6
One-key MAC
の
7
Cipher-based MAC
の
暗号はあくまでも数値の計算処理にすぎないため、改 ざんされた暗号文であっても、復 号 の
計算 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.