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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
8
장
p2sh 스크립트
219
for
_
in
range
(
n
):
sec_pubkeys
.
append
(
stack
.
pop
())
m
=
decode_num
(
stack
.
pop
())
if
len
(
stack
)
<
m
+
1
:
return
False
der_signatures
=
[]
for
_
in
range
(
m
):
der_signatures
.
append
(
stack
.
pop
()[:
-
1
])
➊
stack
.
pop
()
➋
try
:
raise
NotImplementedError
➌
except
(
ValueError
,
SyntaxError
):
return
False
return
True
➊
각
DER
서명은 해시유형
SIGHASH
_
ALL
로 서명된 것으로 간주합니다.
➋
off
-
by
-
one
버그와 같이 스택 위에서 원소 하나를 더 가져오고 아무 일도 하지 않습니다.
➌
[연습문제
8
.
1
]에서 코딩해야 할 부분입니다.
연습문제
8
.1
op
.
py
파일의
op
_
checkmultisig
함수를 작성하시오.
8.3
다중서명의 문제점
다중서명은 동작은 하지만 비효율적입니다. 어쨌든
n
개 중
m
개의 서명만으로
UTXO
를 사용
할 수 있게 해서 비밀키 하나에 모든 비트코인을 보관하는 단일 실패 지점
single
point
of
failure
을 제
거합니다. 다중서명을 사용하게 하는 많은 유틸리티 ...
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Publisher Resources
ISBN: 9791162248294