def extract_public_key(bytes):
decoded = [x for x in script_GetOp(bytes)]
# non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key
# (65 bytes) onto the stack:
match = [opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[1][1])
# The Genesis Block, self-payments, and pay-by-IP-address payments look like:
# 65 BYTES:... CHECKSIG
match = [opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[0][1])
# Pay-by-Bitcoin-address TxOuts look like:
# DUP HASH160 20 BYTES:... EQUALVERIFY CHECKSIG
match = [opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4, opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1])
# OP_EVAL TxOuts look like:
# DUP HASH160 20 BYTES:... EQUALVERIFY CHECKSIG
match = [opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4, opcodes.OP_EQUALVERIFY, opcodes.OP_EVAL]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1], version="\x01")
return "(None)"
def extract_public_key(bytes):
decoded = [x for x in script_GetOp(bytes)]
# non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key
# (65 bytes) onto the stack:
match = [opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[1][1])
# The Genesis Block, self-payments, and pay-by-IP-address payments look like:
# 65 BYTES:... CHECKSIG
match = [opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[0][1])
# Pay-by-Bitcoin-address TxOuts look like:
# DUP HASH160 20 BYTES:... EQUALVERIFY CHECKSIG
match = [
opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4,
opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG
]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1])
# OP_EVAL TxOuts look like:
# DUP HASH160 20 BYTES:... EQUALVERIFY CHECKSIG
match = [
opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4,
opcodes.OP_EQUALVERIFY, opcodes.OP_EVAL
]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1], version="\x01")
return "(None)"
def extract_public_key(bytes, version='\x00'):
try:
decoded = [ x for x in script_GetOp(bytes) ]
except struct.error:
return "(None)"
match = [ opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4 ]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[1][1], version=version)
match = [ opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG ]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[0][1], version=version)
match = [ opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4, opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG ]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1], version=version)
multisigs = [
[ opcodes.OP_1, opcodes.OP_PUSHDATA4, opcodes.OP_1, opcodes.OP_CHECKMULTISIG ],
[ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_2, opcodes.OP_CHECKMULTISIG ],
[ opcodes.OP_3, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_3, opcodes.OP_CHECKMULTISIG ]
]
for match in multisigs:
if match_decoded(decoded, match):
return "["+','.join([public_key_to_bc_address(decoded[i][1]) for i in range(1,len(decoded)-1)])+"]"
match = [ opcodes.OP_HASH160, 0x14, opcodes.OP_EQUAL ]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[1][1], version="\x05")
return "(None)"
def extract_public_key(bytes, version='\x00'):
try:
decoded = [x for x in script_GetOp(bytes)]
except struct.error:
return "(None)"
# non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key
# (33 or 65 bytes) onto the stack:
match = [opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[1][1], version=version)
# The Genesis Block, self-payments, and pay-by-IP-address payments look like:
# 65 BYTES:... CHECKSIG
match = [opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[0][1], version=version)
# Pay-by-Bitcoin-address TxOuts look like:
# DUP HASH160 20 BYTES:... EQUALVERIFY CHECKSIG
match = [
opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4,
opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG
]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1], version=version)
# BIP11 TxOuts look like one of these:
multisigs = [[
opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_1,
opcodes.OP_CHECKMULTISIG
],
[
opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4,
opcodes.OP_PUSHDATA4, opcodes.OP_2,
opcodes.OP_CHECKMULTISIG
],
[
opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4,
opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_3,
opcodes.OP_CHECKMULTISIG
]]
for match in multisigs:
if match_decoded(decoded, match):
return "[" + ','.join([
public_key_to_bc_address(decoded[i][1])
for i in range(1,
len(decoded) - 1)
]) + "]"
# BIP16 TxOuts look like:
# HASH160 20 BYTES:... EQUAL
match = [opcodes.OP_HASH160, 0x14, opcodes.OP_EQUAL]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[1][1], version="\x05")
return "(None)"
def extract_public_key(bytes, version='\x00'):
try:
decoded = [ x for x in script_GetOp(bytes) ]
except (struct.error, IndexError):
return None
# non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key
# (33 or 65 bytes) onto the stack:
match = [ opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4 ]
if match_decoded(decoded, match):
if (decoded[0][0]==0 and decoded[1][0] in [20, 32]):
#Native Segwit P2PKH or P2SH output
#Return the exact bytes
return decoded[1][1]
return public_key_to_bc_address(decoded[1][1], version=version)
# The Genesis Block, self-payments, and pay-by-IP-address payments look like:
# 65 BYTES:... CHECKSIG
match = [ opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG ]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[0][1], version=version)
# Pay-by-Bitcoin-address TxOuts look like:
# DUP HASH160 20 BYTES:... EQUALVERIFY CHECKSIG
match = [ opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4, opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG ]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1], version=version)
# BIP11 TxOuts look like one of these:
# Note that match_decoded is dumb, so OP_1 actually matches OP_1/2/3/etc:
multisigs = [
[ opcodes.OP_1, opcodes.OP_PUSHDATA4, opcodes.OP_1, opcodes.OP_CHECKMULTISIG ],
[ opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_2, opcodes.OP_CHECKMULTISIG ],
[ opcodes.OP_3, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_3, opcodes.OP_CHECKMULTISIG ]
]
for match in multisigs:
if match_decoded(decoded, match):
return [public_key_to_bc_address(decoded[i][1], version=version) for i in range(1,len(decoded)-1)]
# BIP16 TxOuts look like:
# HASH160 20 BYTES:... EQUAL
match = [ opcodes.OP_HASH160, 0x14, opcodes.OP_EQUAL ]
if match_decoded(decoded, match):
script_version = '\x05' if version=='\x00' else '\xC4'
return hash_160_to_bc_address(decoded[1][1], version=script_version)
return None
def extract_public_key(bytes, version='\x00'):
try:
decoded = [x for x in script_GetOp(bytes)]
except struct.error:
return "(None)"
# non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key
# (33 or 65 bytes) onto the stack:
match = [opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[1][1], version=version)
# The Genesis Block, self-payments, and pay-by-IP-address payments look like:
# 65 BYTES:... CHECKSIG
match = [opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[0][1], version=version)
# Pay-by-Bitcoin-address TxOuts look like:
# DUP HASH160 20 BYTES:... EQUALVERIFY CHECKSIG
match = [opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4,
opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1], version=version)
# BIP11 TxOuts look like one of these:
multisigs = [
[opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_1,
opcodes.OP_CHECKMULTISIG], [
opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4,
opcodes.OP_2, opcodes.OP_CHECKMULTISIG
], [opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4,
opcodes.OP_PUSHDATA4, opcodes.OP_3, opcodes.OP_CHECKMULTISIG]
]
for match in multisigs:
if match_decoded(decoded, match):
return "[" + ','.join([public_key_to_bc_address(decoded[i][1])
for i in range(1, len(decoded) - 1)]) + "]"
# BIP16 TxOuts look like:
# HASH160 20 BYTES:... EQUAL
match = [opcodes.OP_HASH160, 0x14, opcodes.OP_EQUAL]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[1][1], version="\x05")
return "(None)"
def parse_TxOut(vds):
d = {}
d['value'] = vds.read_int64()
raw = vds.read_bytes(vds.read_compact_size())
d['scriptPubKey'] = raw
if len(raw) == 25 and raw[0] == '\x76' and raw[1] == '\xa9' and raw[2] == '\x14':
d['address'] = base58.hash_160_to_bc_address(raw[3:-2])
return d
def extract_public_key(bytes, version='\x00'):
try:
decoded = [x for x in script_GetOp(bytes)]
except struct.error:
return "(None)"
match = [opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[1][1], version=version)
match = [opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[0][1], version=version)
match = [
opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4,
opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG
]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1], version=version)
multisigs = [[
opcodes.OP_1, opcodes.OP_PUSHDATA4, opcodes.OP_1,
opcodes.OP_CHECKMULTISIG
],
[
opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4,
opcodes.OP_2, opcodes.OP_CHECKMULTISIG
],
[
opcodes.OP_3, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4,
opcodes.OP_3, opcodes.OP_CHECKMULTISIG
]]
for match in multisigs:
if match_decoded(decoded, match):
return "[" + ','.join([
public_key_to_bc_address(decoded[i][1])
for i in range(1,
len(decoded) - 1)
]) + "]"
match = [opcodes.OP_HASH160, 0x14, opcodes.OP_EQUAL]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[1][1], version="\x05")
return "(None)"
k = ecdsa_ssl.KEY()
k.generate(('%064x' % PRIVATE_KEY).decode('hex'))
#here we retrieve the public key data generated from the supplied private key
pubkey_data = k.get_pubkey()
#then we create a signature over the hash of the signature-less transaction
sig_data=k.sign(hash_scriptless)
#a one byte "hash type" is appended to the end of the signature (https://en.bitcoin.it/wiki/OP_CHECKSIG)
sig_data = sig_data + chr(SIGHASH_ALL)
#let's check that the provided privat key can actually redeem the output in question
if (bc_address_to_hash_160(public_key_to_bc_address(pubkey_data)) != tx_info['txOut'][OUTPUT_INDEX]['scriptPubKey'][3:-2]):
bytes = b58decode(SEND_TO_ADDRESS, 25)
raise RuntimeError, "The supplied private key cannot be used to redeem output index %d\nYou need to supply the private key for address %s" % \
(OUTPUT_INDEX, hash_160_to_bc_address(tx_info['txOut'][OUTPUT_INDEX]['scriptPubKey'][3:-2], bytes[0]))
##now we begin creating the final transaction. this is a duplicate of the signature-less transaction,
## with the scriptSig filled out with a script that pushes the signature plus one-byte hash code type, and public key from above, to the stack
final_tx = BCDataStream()
final_tx.write_int32(tx_fields['version'])
final_tx.write_compact_size(tx_fields['num_txin'])
final_tx.write(tx_fields['prevout_hash'])
final_tx.write_uint32(tx_fields['output_index'])
##now we need to write the actual scriptSig.
## this consists of the DER-encoded values r and s from the signature, a one-byte hash code type, and the public key in uncompressed format
## we also need to prepend the length of these two data pieces (encoded as a single byte
## containing the length), before each data piece. this length is a script opcode that tells the
## Bitcoin script interpreter to push the x following bytes onto the stack
def rawpk2addr(pk_script):
"""
Convert a raw bitcoin block script of public key to a common address
"""
import base58 # reference program: base58.py
return base58.hash_160_to_bc_address(rawpk2hash160(pk_script))
k = ecdsa_ssl.KEY()
k.generate(('%064x' % PRIVATE_KEY).decode('hex'))
#here we retrieve the public key data generated from the supplied private key
pubkey_data = k.get_pubkey()
#then we create a signature over the hash of the signature-less transaction
sig_data=k.sign(hash_scriptless)
#a one byte "hash type" is appended to the end of the signature (https://en.bitcoin.it/wiki/OP_CHECKSIG)
sig_data = sig_data + chr(SIGHASH_ALL)
#let's check that the provided privat key can actually redeem the output in question
if (bc_address_to_hash_160(public_key_to_bc_address(pubkey_data)) != tx_info['txOut'][OUTPUT_INDEX]['scriptPubKey'][3:-2]):
bytes = b58decode(SEND_TO_ADDRESS, 25)
raise RuntimeError, "The supplied private key cannot be used to redeem output index %d\nYou need to supply the private key for address %s" % \
(OUTPUT_INDEX, hash_160_to_bc_address(tx_info['txOut'][OUTPUT_INDEX]['scriptPubKey'][3:-2], bytes[0]))
##now we begin creating the final transaction. this is a duplicate of the signature-less transaction,
## with the scriptSig filled out with a script that pushes the signature plus one-byte hash code type, and public key from above, to the stack
final_tx = BCDataStream()
final_tx.write_int32(tx_fields['version'])
final_tx.write_compact_size(tx_fields['num_txin'])
final_tx.write(tx_fields['prevout_hash'])
final_tx.write_uint32(tx_fields['output_index'])
##now we need to write the actual scriptSig.
## this consists of the DER-encoded values r and s from the signature, a one-byte hash code type, and the public key in uncompressed format
## we also need to prepend the length of these two data pieces (encoded as a single byte
## containing the length), before each data piece. this length is a script opcode that tells the
## Bitcoin script interpreter to push the x following bytes onto the stack
def extract_public_key(bytes, version='\x00'):
try:
decoded = [x for x in script_GetOp(bytes)]
except (struct.error, IndexError):
return None
# non-generated TxIn transactions push a signature
# (seventy-something bytes) and then their public key
# (33 or 65 bytes) onto the stack:
match = [opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4]
if match_decoded(decoded, match):
if (decoded[0][0] == 0 and decoded[1][0] in [20, 32]):
#Native Segwit P2PKH or P2SH output
#Return the exact bytes
return decoded[1][1]
return public_key_to_bc_address(decoded[1][1], version=version)
# The Genesis Block, self-payments, and pay-by-IP-address payments look like:
# 65 BYTES:... CHECKSIG
match = [opcodes.OP_PUSHDATA4, opcodes.OP_CHECKSIG]
if match_decoded(decoded, match):
return public_key_to_bc_address(decoded[0][1], version=version)
# Pay-by-Bitcoin-address TxOuts look like:
# DUP HASH160 20 BYTES:... EQUALVERIFY CHECKSIG
match = [
opcodes.OP_DUP, opcodes.OP_HASH160, opcodes.OP_PUSHDATA4,
opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG
]
if match_decoded(decoded, match):
return hash_160_to_bc_address(decoded[2][1], version=version)
# BIP11 TxOuts look like one of these:
# Note that match_decoded is dumb, so OP_1 actually matches OP_1/2/3/etc:
multisigs = [[
opcodes.OP_1, opcodes.OP_PUSHDATA4, opcodes.OP_1,
opcodes.OP_CHECKMULTISIG
],
[
opcodes.OP_2, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4,
opcodes.OP_2, opcodes.OP_CHECKMULTISIG
],
[
opcodes.OP_3, opcodes.OP_PUSHDATA4, opcodes.OP_PUSHDATA4,
opcodes.OP_3, opcodes.OP_CHECKMULTISIG
]]
for match in multisigs:
if match_decoded(decoded, match):
return [
public_key_to_bc_address(decoded[i][1], version=version)
for i in range(1,
len(decoded) - 1)
]
# BIP16 TxOuts look like:
# HASH160 20 BYTES:... EQUAL
match = [opcodes.OP_HASH160, 0x14, opcodes.OP_EQUAL]
if match_decoded(decoded, match):
script_version = '\x05' if version == '\x00' else '\xC4'
return hash_160_to_bc_address(decoded[1][1], version=script_version)
return None
def hash_160_to_bc_address(h160, addrtype=0):
"""Deprecated."""
return base58.hash_160_to_bc_address(h160, addrtype)
