November 2019
Beginner to intermediate
408 pages
9h 29m
Korean
Content preview from 밑바닥부터 시작하는 비트코인
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밑바닥부터 시작하는 비트코인
230
➌
OP
_
HASH160
을 수행하는 함수를 호출합니다. 이후
20
바이트의 해시값을 스택 위로 올립니
다. 다음
OP
_
EQUAL
에 해당하는 함수를 호출합니다.
➍ 올바르다면
1
이 스택에 남아 있어야 하고
OP
_
VERIFY
함수가 이 값을 가져옵니다.
OP
_
VERIFY
는 스택 위의 값이 없거나
0
이면
False
를, 그 외에는
True
를 반환합니다.
OP
_
VERIFY
는 실행 후 스택에 값을 넣지 않습니다.
➎ 리딤 스크립트 파싱에 앞서 리딤 스크립트 길이를 구하고 이 값을 앞에 위치시킵니다. 그
이유는 파싱하는 함수(
Script
.
parse
()
)가 파싱할 부분의 길이를 먼저 알아야 하기 때문
입니다.
➏ 리딤 스크립트에서 파싱된 명령어를 스크립트 명령집합에 삽입합니다.
8.5.1
다중서명 이외의
p2sh
p2sh
스크립트의 장점은 리딤 스크립트 길이가 최대
520
바이트까지 가능하다는 점입니다. 이
는 하나의 원소가 가질 수 있는 가장 긴 길이이고 그러한 원소는
OP
_
PUSHDATA2
명령어로 스택
에 올라갈 수 있습니다. 다중서명은 리딤 스크립트로 구현 가능한 그냥 한 가지 예입니다. 더
복잡한 로직을 정의하는 스크립트도 만들 수 있습니다. 이를테면 ‘
3
개의 비밀키 중
2
개 혹은
7
개의 비밀키 중
5
개’로 열리는 스크립트가 그러한 ...
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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.