May 2022
Beginner to intermediate
756 pages
21h 30m
Korean
book
HTTP 완벽 가이드
by David Gourlry, Brian Totty, Lee Eung Jun, Sang -Il Jeong, Anshu Agarwal, Seilu Reddy, Marjorie Sayre
Content preview from HTTP 완벽 가이드
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367
14
장 보안 HTTP
The Definitive Guide
호화할 때는 빠른 대칭 키를 사용하는 방식이 흔히 쓰인다.
14.5
디지털 서명
지금까지 우리는 우리로 하여금 비밀 메시지를 대칭 그리고 비대칭 키를 사용해서
암호화하고 해독할 수 있게 해주는 여러 종류의 암호에 대해 이야기했다.
암호 체계는 메시지를 암호화하고 해독하는 것뿐 아니라, 누가 메시지를 썼는지
알려주고 그 메시지가 위조되지 않았음을 증명하기 위해 메시지에 서명을 하도록
하는 데에 이용될 수 있다. 디지털 서명(digital signing)이라 불리는 이 기법은 다음
절에서 논의할 인터넷 보안 인증서에게 중요하다.
14.5.1
서명은 암호 체크섬이다
디지털 서명은 메시지에 붙어있는 특별한 암호 체크섬이다. 이들은 두 가지 이점을
가진다.
· 서명은 메시지를 작성한 저자가 누군지 알려준다. 저자는 저자의 극비 개인 키를
갖고 있기 때문에
10
, 오직 저자만이 이 체크섬을 계산할 수 있다. 체크섬은 저자
의 개인 ‘서명’처럼 동작한다.
· 서명은 메시지 위조를 방지한다. 만약 악의적인 공격자가 송신 중인 메시지를 수
정했다면, 체크섬은 더 이상 그 메시지와 맞지 않게 될 것이다. 그리고 체크섬은
저자의 비밀 개인 키에 관련되어 있기 때문에, 침입자는 그 위조된 메시지에 대
한 올바른 체크섬을 ...
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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.