AaronFiore/electrum
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update validate_tx script

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This commit is contained in:
ThomasV
2012-10-28 08:19:39 +01:00
parent df85516bd0
commit 7ab5e14369
1 changed files with 8 additions and 11 deletions
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19
scripts/validate_tx
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@@ -2,23 +2,20 @@
import sys, hashlib import sys, hashlib
from electrum import Interface from electrum import Interface
from electrum.bitcoin import Hash, rev_hex, int_to_hex from electrum.bitcoin import Hash, rev_hex, int_to_hex, hash_encode, hash_decode
"""validate a transaction (SPV)""" """validate a transaction (SPV)"""
i = Interface({'server':'ecdsa.org:50002:s'}) i = Interface({'server':'ecdsa.org:50002:s'})
i.start() i.start()
encode = lambda x: x[::-1].encode('hex')
decode = lambda x: x.decode('hex')[::-1]
def hash_merkle_root(merkle_s, target_hash, pos):
def do_merkle_root(merkle_s, target_hash): h = hash_decode(target_hash)
h = decode(target_hash) for i in range(len(merkle_s)):
for item in merkle_s: item = merkle_s[i]
is_left = item[0] == 'L' h = Hash( hash_decode(item) + h ) if ((pos >> i) & 1) else Hash( h + hash_decode(item) )
h = Hash( h + decode(item[1:]) ) if is_left else Hash( decode(item[1:]) + h ) return hash_encode(h)
return encode(h)
def hash_header(res): def hash_header(res):
@@ -33,7 +30,7 @@ def hash_header(res):
def verify_tx(tx_hash): def verify_tx(tx_hash):
res = i.synchronous_get([ ('blockchain.transaction.get_merkle',[tx_hash]) ])[0] res = i.synchronous_get([ ('blockchain.transaction.get_merkle',[tx_hash]) ])[0]
merkle_root = do_merkle_root(res['merkle'], tx_hash) merkle_root = hash_merkle_root(res['merkle'], tx_hash, res['pos'])
tx_height = res.get('block_height') tx_height = res.get('block_height')
headers_requests = [] headers_requests = []
for height in range(tx_height-10,tx_height+10): for height in range(tx_height-10,tx_height+10):