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O'Reilly Platform
book
밑바닥부터 시작하는 비트코인
by
류정필
,
송재준
November 2019
Beginner to intermediate
408 pages
9h 29m
Korean
Hanbit Media, Inc.
Content preview from
밑바닥부터 시작하는 비트코인
밑바닥부터 시작하는 비트코인
276
11.3
머클부모
2
개의 해시값이 주어지면 이 값을 대표하는 또 다른 해시값을 구합니다. 순서에 따라 두 해시
값을 왼쪽 해시값과 오른쪽 해시값이라고 하겠습니다. 왼쪽과 오른쪽 해시값을 연결하여 붙인
값의 해시값을 부모 해시값이라 하고 혹은 머클부모라고도 합니다. 다음은 부모 해시값을 구하
는 수식입니다.
•
H
= 해시함수
•
P
= 부모 해시값
•
L
= 왼쪽 해시값
•
R
= 오른쪽 해시값
P
=
H
(
L
||
R
)
여기서
||
기호는
L
과
R
을 연결하여 붙임
concatenation
을 의미합니다.
파이썬으로 이 과정을 다음과 같이 코딩할 수 있습니다.
>>> from helper import hash256
>>> hash0 = bytes.fromhex('c117ea8ec828342f4dfb0ad6bd140e03a50720ece40169ee38b\
dc15d9eb64cf5')
>>> hash1 = bytes.fromhex('c131474164b412e3406696da1ee20ab0fc9bf41c8f05fa8ceea\
7a08d672d7cc5')
>>> parent = hash256(hash0 + hash1)
>>> print(parent.hex())
8b30c5ba100f6f2e5ad1e2a742e5020491240f8eb514fe97c713c31718ad7ecd ...
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Publisher Resources
ISBN: 9791162248294