BTCPrivate
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electrum-bitcoinprivate
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compute merkle root from reduced list

This commit is contained in:
thomasv 2012-10-19 15:52:11 +02:00
parent 5717b43661
commit d57fec2659
1 changed files with 12 additions and 14 deletions
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26
scripts/validate_tx
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@ -11,19 +11,19 @@ i = Interface({'server':'ecdsa.org:50002:s'})
i.start() i.start()
def merkle_root(merkle): encode = lambda x: x[::-1].encode('hex')
decode = lambda x: x.decode('hex')[::-1]
merkle = map (lambda tx_hash: tx_hash.decode('hex')[::-1], merkle)
while len(merkle) != 1:
if len(merkle)%2: merkle.append( merkle[-1] )
n = []
while merkle:
n.append( Hash( merkle[0] + merkle[1] ) )
merkle = merkle[2:]
merkle = n def merkle_root(merkle_s, target_hash):
h = decode(target_hash)
return merkle[0][::-1].encode('hex') for item in merkle_s:
is_left = item[0] == 'L'
if is_left:
h = Hash( h + decode(item[1:]) )
else:
h = Hash( decode(item[1:]) + h )
return encode(h)
def hash_header(res): def hash_header(res):
@ -39,8 +39,7 @@ 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]
assert tx_hash in res.get('merkle') assert res.get('merkle_root') == merkle_root(res['merkle'], tx_hash)
assert res.get('merkle_root') == merkle_root(res['merkle'])
block_height = res.get('block_height') block_height = res.get('block_height')
print block_height print block_height
@ -58,7 +57,6 @@ def verify_tx(tx_hash):
assert header.get('merkle_root') == res.get('merkle_root') assert header.get('merkle_root') == res.get('merkle_root')
try: try:
tx = sys.argv[1] tx = sys.argv[1]
except: except: