November 2019
Beginner to intermediate
408 pages
9h 29m
Korean
Content preview from 밑바닥부터 시작하는 비트코인
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.
3
장
타원곡선 암호
95
3.8
스칼라 곱셈으로 생성된 군의 성질
지금까지 배운 내용-유한체와 타원곡선, 그리고 둘의 조합으로 유한순환군을 설명할 수 있습
니다. 실제로 공개키 암호에서 쓰이는 것은
유한순환군
finite
cyclic
groups
입니다. 곧 다루겠지만 유한
체에서 정의된 타원곡선 위 한 점에 스칼라 값을 곱해서 유한순환군을 생성할 수 있습니다. 이
한 점을
생성점
generator
point
이라고 합니다.
체와는 다르게 군에서는 연산이 하나만 있습니다. 점 덧셈이 그 연산입니다. 군은 또한 이 연산
을 위한 몇 가지 성질을 가지고 있습니다. 군에 대해 닫혀 있고, 역원이 존재하고, 교환법칙, 결
합법칙이 성립합니다. 마지막으로 항등원이 존재합니다.
항등원부터 시작해서 각각의 성질을 살펴보겠습니다.
3.8.1
항등원의 존재
짐작한 바와 같이 항등원은 무한원점으로 정의됩니다. 무한원점에 도달할 때까지 군을 생성하
기에 군에는 무한원점이 포함됩니다. 따라서 다음과 같이 표현할 수 있습니다.
0
+
A
=
A
항등원은 표기를
0
으로 하고 이를 무한원점이라고 합니다. 왜냐하면 [그림
3
-
5
]에서처럼 그래
프상 무한대에 존재하여 수학적 논리를 만들어주기 때문입니다.
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.