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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368
HTTP
3
부 식별, 인가, 보안
다. 오직 그 사용자만이 개인 키를 알고 있기 때문에, 올바른 서명 함수는 서명자
가 소유자임을 보여준다. 그럼 14-10에서 우리가 서명 함수로 디코더 함수 D를
사용한 이유는, 그 함수가 사용자의 개인 키에 관련되어 있기 때문이다.
11
· 한번 서명이 계산되면, 노드 A는 그것을 메시지의 끝에 덧붙이고 메시지와 그에
대한 서명 둘 다를 노드 B에게 전송한다.
· 메시지를 받은 노드 B가, 만약 그 메시지를 쓴 것이 정말로 노드 A이며 동시에 위
조되지도 않았다는 것을 확인하길 원한다면, 노드 B는 서명을 검사할 수 있다. 노
드 B는 개인 키로 알아보기 어렵게 변형된 서명에 공개키를 이용한 역함수를 적
용한다. 만약 풀어낸 요약이 노드 B가 갖고 있는 버전의 요약과 일치하지 않는다
면, 메시지가 송신 중에 위조되었거나 아니면 발송자가 노드 A의 개인 키를 갖고
있지 않은 것이다(따라서 메시지를 쓴 것은 노드 A가 아니다).
A
DE
B
평문 메시지
서명
메시지
요약
개인
키= dA
공개
키= eA
같은가?
메시지
요약
메시지
요약
그림
14
-
10
해독된 디지털 서명
14.6
디지털 인증서
이 절에서, 우리는 인터넷의 신분증인 디지털 인증서에 대해 이야기할 것이다. 디
지털 인증서(흔히 ‘certs’라고 불리는)는 신뢰할 수 있는 기관으로부터 ...
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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.