def __init__(self, msg=None, data=None, filename=None, password=None, vals=None, file_obj=None):
self.verifying_key = None
self.signing_key = None
if file_obj is not None:
self._from_private_key(file_obj, password)
return
if filename is not None:
self._from_private_key_file(filename, password)
return
if (msg is None) and (data is not None):
msg = Message(data)
if vals is not None:
self.verifying_key, self.signing_key = vals
else:
if msg is None:
raise SSHException('Key object may not be empty')
if msg.get_text() != 'ecdsa-sha2-nistp256':
raise SSHException('Invalid key')
curvename = msg.get_text()
if curvename != 'nistp256':
raise SSHException("Can't handle curve of type %s" % curvename)
pointinfo = msg.get_binary()
if pointinfo[0:1] != four_byte:
raise SSHException('Point compression is being used: %s' %
binascii.hexlify(pointinfo))
self.verifying_key = VerifyingKey.from_string(pointinfo[1:],
curve=curves.NIST256p)
self.size = 256
def import_public_key_ecc(s):
"""
import public ecc key from a hex string
:param s: a hex string generated by export_keys()
:return: a VerifyingKey object
"""
return VerifyingKey.from_string(bytes.fromhex(s), curve=SECP256k1)
def __init__(self,jsonObject):
"""
Validate the signature of an already parsed JSON object
The current implementation is limited to RSA and EC
signatures and usage of the IETF JOSE algorithms
An invalid signature raises an exception
"""
if not isinstance(jsonObject, OrderedDict):
raise TypeError('JCS requires JSON to be parsed into a "OrderedDict"')
signatureObject = jsonObject['signature']
clonedSignatureObject = OrderedDict(signatureObject)
signatureValue = base64UrlDecode(signatureObject.pop('value'))
algorithmEntry = getAlgorithmEntry(signatureObject['algorithm'])
hashObject = algorithmEntry[1].new(serializeJson(jsonObject).encode("utf-8"))
jsonObject['signature'] = clonedSignatureObject
self.publicKey = signatureObject['publicKey']
keyType = self.publicKey['type']
if algorithmEntry[0]:
if keyType != 'RSA':
raise TypeError('"RSA" expected')
self.nativePublicKey = RSA.construct([cryptoBigNumDecode(self.publicKey['n']),
cryptoBigNumDecode(self.publicKey['e'])])
if not PKCS1_v1_5.new(self.nativePublicKey).verify(hashObject,signatureValue):
raise ValueError('Invalid Signature!')
else:
if keyType != 'EC':
raise TypeError('"EC" expected')
self.nativePublicKey = EC.from_string(base64UrlDecode(self.publicKey['x']) +
base64UrlDecode(self.publicKey['y']),
curve=getEcCurve(self.publicKey['curve']))
self.nativePublicKey.verify_digest(signatureValue,hashObject.digest())
def check_for_privkey(keydir, jid, stderr):
# the "anonymous ID" case
if jid.startswith("anonid0-"):
return None
# the "old-style ID" case
# FIXME: once it is possible for addons to change from old-style IDs
# to new, cryptographic IDs on AMO and in Firefox, warn users that
# continuing to use old-style IDs is less secure, and provide them with
# instructions for changing to new IDs.
if not jid.startswith("jid0-"):
return None
keypath = os.path.join(keydir, jid)
if not os.path.isfile(keypath):
msg = """\
Your package.json says our ID is:
%(jid)s
But I don't have a corresponding private key in:
%(keypath)s
If you are the original developer of this package and have recently copied
the source code from a different machine to this one, you should copy the
private key into the file named above.
Otherwise, if you are a new developer who has made a copy of an existing
package to use as a starting point, you need to remove the 'id' property
from package.json, so that we can generate a new id and keypair. This will
disassociate our new package from the old one.
If you're collaborating on the same addon with a team, make sure at least
one person on the team has the private key. In the future, you may not
be able to distribute your addon without it.
"""
print >> stderr, msg % {"jid": jid, "keypath": keypath}
return None
keylines = open(keypath, "r").readlines()
keydata = {}
for line in keylines:
line = line.strip()
if line:
k, v = line.split(":", 1)
keydata[k.strip()] = v.strip()
if "private-key" not in keydata:
raise ValueError("invalid keydata: can't find 'private-key' line")
sk_s = remove_prefix(keydata["private-key"], "private-jid0-", errormsg="unable to parse private-key data")
from ecdsa import SigningKey, VerifyingKey, NIST256p
sk = SigningKey.from_string(my_b32decode(sk_s), curve=NIST256p)
vk = sk.get_verifying_key()
jid_2 = vk_to_jid(vk)
if jid_2 != jid:
raise ValueError("invalid keydata: private-key in %s does not match" " public key for %s" % (keypath, jid))
vk_s = remove_prefix(keydata["public-key"], "public-jid0-", errormsg="unable to parse public-key data")
vk2 = VerifyingKey.from_string(my_b32decode(vk_s), curve=NIST256p)
if vk.to_string() != vk2.to_string():
raise ValueError("invalid keydata: public-key mismatch")
return sk
def hex2key(hex_key):
key_bytes = unhexlify(hex_key)
if len(hex_key) == 64:
return SigningKey.from_string(key_bytes, curve=NIST256p,
hashfunc=sha256)
elif len(hex_key) == 128:
return VerifyingKey.from_string(key_bytes, curve=NIST256p,
hashfunc=sha256)
else:
raise ValueError("Key in hex form is of the wrong length.")
def __init__(self, identity, private, public): """Configure HTDSA signed request/response authentication. To perform the cryptographic operations required for the HTDSA protocol you must pass in either instances of `ecdsa` signing and verifying keys, or their hex-encoded versions which will be converted automatically. Additionally, the identity token (opaque identifier) assigned to your client application by the provider will need to be passed in so we can identify ourselves. The private key is your application's private key. The public key is the provider's service key you were given when registering your application. """ self.identity = identity self.private = SigningKey.from_string(unhexlify(private), NIST256p) if isinstance(private, (str, unicode)) else private self.public = VerifyingKey.from_string(unhexlify(public), NIST256p) if isinstance(public, (str, unicode)) else public
def __init__(self, key=None, private=False): self.secretKey = self.verifKey = None # Recuperation if key is not None: if private: self.secretKey = SigningKey.from_string(key, curve=NIST384p) self.verifKey = self.secretKey.get_verifying_key() else: self.verifKey = VerifyingKey.from_string(key, curve=NIST384p) # Auto-generation else: self.secretKey = SigningKey.generate(curve=NIST384p) self.verifKey = self.secretKey.get_verifying_key()
def check_for_privkey(keydir, jid, stderr):
keypath = os.path.join(keydir, jid)
if not os.path.isfile(keypath):
msg = """\
Your package.json says our ID is:
%(jid)s
But I don't have a corresponding private key in:
%(keypath)s
If you are the original developer of this package and have recently copied
the source code from a different machine to this one, you need to copy the
private key into the file named above.
Otherwise, if you are a new developer who has made a copy of an existing
package to use as a starting point, you need to remove the 'id' property
from package.json, so that we can generate a new id and keypair. This will
disassociate our new package from the old one.
"""
print >>stderr, msg % {"jid": jid, "keypath": keypath}
return None
keylines = open(keypath, "r").readlines()
keydata = {}
for line in keylines:
line = line.strip()
if line:
k,v = line.split(":", 1)
keydata[k.strip()] = v.strip()
if "private-key" not in keydata:
raise ValueError("invalid keydata: can't find 'private-key' line")
sk_s = remove_prefix(keydata["private-key"], "private-jid0-",
errormsg="unable to parse private-key data")
from ecdsa import SigningKey, VerifyingKey, NIST256p
sk = SigningKey.from_string(my_b32decode(sk_s), curve=NIST256p)
vk = sk.get_verifying_key()
jid_2 = vk_to_jid(vk)
if jid_2 != jid:
raise ValueError("invalid keydata: private-key in %s does not match"
" public key for %s" % (keypath, jid))
vk_s = remove_prefix(keydata["public-key"], "public-jid0-",
errormsg="unable to parse public-key data")
vk2 = VerifyingKey.from_string(my_b32decode(vk_s), curve=NIST256p)
if vk.to_string() != vk2.to_string():
raise ValueError("invalid keydata: public-key mismatch")
return sk
def valid_signature(self, signature, msg, public_key=None):
try:
if type(msg) == str:
msg = msg.encode("ascii")
#Parse public key.
if public_key == None:
public_key = self.public_key
else:
public_key = self.parse_public_key(public_key)
signature = auto_bytes(signature)
msg = auto_bytes(msg)
verify_key = VerifyingKey.from_string(public_key, SECP256k1)
return verify_key.verify(signature, msg)
except Exception as e:
print(e)
return 0
def __init__(self, public_key=None, private_key=None):
self.id = 0
if public_key is not None:
public_key = "#" + public_key
if private_key is not None:
private_key = "#" + private_key
self.public_key = auto_bytes(public_key)
self.private_key = private_key
self.addr_version = None
self.use_compression = 1
if private_key == "":
private_key = None
#Generate key pairs.
if self.public_key == None and private_key == None:
self.sign_key = SigningKey.generate(curve=SECP256k1)
self.verify_key = self.sign_key.get_verifying_key()
self.private_key = self.sign_key.to_string()
self.public_key = self.verify_key.to_string()
return
#Init public key.
self.old_verify_str = None
if self.public_key != None:
self.public_key = self.parse_public_key(self.public_key)
self.verify_key = VerifyingKey.from_string(self.public_key, SECP256k1)
self.sign_key = None
self.old_verify_str = self.verify_key.to_string()
#Init private key.
if self.private_key != None:
#Construct keys from private key.
self.private_key = self.parse_private_key(private_key)
self.sign_key = SigningKey.from_string(self.private_key, SECP256k1)
self.verify_key = self.sign_key.get_verifying_key()
#Check private key corrosponds to public key.
if self.old_verify_str != None:
if self.old_verify_str != self.verify_key.to_string():
raise Exception("Private key doesn't corrospond to stored public key.")
def from_sec(string, curve=curves.SECP256k1, hashfunc=sha1, validate_point=True):
"""Convert a public key in SEC binary format to a verifying key."""
# based on code from https://github.com/richardkiss/pycoin
if string.startswith(b("\x04")):
# uncompressed
return VerifyingKey.from_string(string[1:], curve, hashfunc, validate_point)
elif string.startswith(b("\x02")) or string.startswith(b("\x03")):
# compressed
is_even = string.startswith(b("\x02"))
x = string_to_number(string[1:])
order = curve.order
p = curve.curve.p()
alpha = (pow(x, 3, p) + (curve.curve.a() * x) + curve.curve.b()) % p
beta = square_root_mod_prime(alpha, p)
if is_even == bool(beta & 1):
y = p - beta
else:
y = beta
if validate_point:
assert ecdsa.point_is_valid(curve.generator, x, y)
point = ellipticcurve.Point(curve.curve, x, y, order)
return VerifyingKey.from_public_point(point, curve, hashfunc)
def verify(public, signature, message):
"""
The function verify if a signature correspond to a message
"""
# We turn the message into bytes if the message is in string
if isinstance(message, str):
message = message.encode("utf-8")
# We transform the signature in a signature with bytes
if isinstance(signature, str):
signature = binascii.unhexlify(signature)
# We create an object for the public key
public = binascii.unhexlify(public)
public = VerifyingKey.from_string(public)
# We verify the key
try:
public.verify(signature, message)
return True
except BadSignatureError:
return False
def DecryptMessage(privateKey_hex, encrypted_hex):
if privateKey_hex[:2] == '0x':
privateKey_hex = privateKey_hex[2:]
if encrypted_hex[:2] == '0x':
encrypted_hex = encrypted_hex[2:]
# get the components
encrypted = bytearray.fromhex(encrypted_hex)
iv = encrypted[:16]
ephemPubKeyEncoded = encrypted[17:81]
mac = encrypted[81:113]
ciphertext = encrypted[113:]
# recover the temporary public key
ephemPubKey = VerifyingKey.from_string(ephemPubKeyEncoded, curve=SECP256k1)
# load the private key
priv_key = SigningKey.from_secret_exponent(int(privateKey_hex, 16),
curve=SECP256k1)
ecdh = ECDH(curve=SECP256k1, private_key=priv_key)
# ECDH => get the shared secret
ecdh.load_received_public_key(ephemPubKey)
px = ecdh.generate_sharedsecret_bytes()
# compute the encription and MAC keys
hash_px = SHA512.new(data=px).digest()
encryptionKey = hash_px[:32]
macKey = hash_px[32:]
# check the MAC
dataToMac = iv + bytearray([4]) + ephemPubKeyEncoded + ciphertext
computed_mac = hmac.new(macKey, dataToMac, 'sha256').digest()
if computed_mac != mac:
raise ValueError("MAC missmatch")
#decipher the text
plaintext = AES256CbcDecrypt(ciphertext.hex(), encryptionKey, iv)
return plaintext.decode("utf-8")
def mine(self):
""" PoA signer; seals a block with new seal data by signing it, checking that
signature is valid, and returning.
"""
# Use NIST192p curve and ECDSA, encoding block header as UTF-8
# use self.get_private_key() for key
# encode result as int and set using set_seal_data
# make sure to check that output is valid seal with provided code
# (if seal is invalid, repeat)
seal_valid = False
while not seal_valid:
sk = SigningKey.from_string(self.get_private_key(), curve=NIST192p)
vk = VerifyingKey.from_string(self.get_public_key(),
curve=NIST192p)
signature = sk.sign(self.unsealed_header().encode('utf-8'))
self.set_seal_data(ecdsa.util.string_to_number(signature))
seal_valid = self.seal_is_valid()
# Placeholder for (1b)
return
def VerifySignature(message, signature, public_key):
"""
Verify the integrity of the message.
Args:
message (str): the message to verify.
signature (bytearray): the signature belonging to the message.
public_key (ECPoint|bytes): the public key to use for verifying the signature. If `public_key` is of type bytes then it should be raw bytes (i.e. b'\xAA\xBB').
Returns:
bool: True if verification passes. False otherwise.
"""
Crypto.SetupSignatureCurve()
if type(public_key) is EllipticCurve.ECPoint:
pubkey_x = public_key.x.value.to_bytes(32, 'big')
pubkey_y = public_key.y.value.to_bytes(32, 'big')
public_key = pubkey_x + pubkey_y
m = message
try:
m = binascii.unhexlify(message)
except Exception as e:
logger.error("could not get m: %s" % e)
if len(public_key) == 33:
public_key = bitcoin.decompress(public_key)
public_key = public_key[1:]
try:
vk = VerifyingKey.from_string(public_key, curve=NIST256p, hashfunc=hashlib.sha256)
res = vk.verify(signature, m, hashfunc=hashlib.sha256)
return res
except Exception as e:
pass
return False
def EncryptMessage(publicKey_hex, plainText_string):
if publicKey_hex[:2] == '0x':
publicKey_hex = publicKey_hex[2:]
publicKey_bin = bytearray.fromhex(publicKey_hex)
# Generate the temporary key
ecdh = ECDH(curve=SECP256k1)
ecdh.generate_private_key()
ephemPubKeyEncoded = bytearray.fromhex(
ecdh.get_public_key().to_string().hex())
# Load the public key
publicKey = VerifyingKey.from_string(publicKey_bin, curve=SECP256k1)
# ECDH => get the shared secret
ecdh.load_received_public_key(publicKey)
px = ecdh.generate_sharedsecret_bytes()
# compute the encription and MAC keys
hash_px = SHA512.new(data=px).digest()
encryptionKey = hash_px[:32]
macKey = hash_px[32:]
# cipher the plain text
iv = Random.get_random_bytes(16)
plaintext = plainText_string.encode(encoding='utf_8')
ciphertext = AES256CbcEncrypt(plaintext, encryptionKey, iv)
# compute the MAC
dataToMac = iv + bytearray([4]) + ephemPubKeyEncoded + ciphertext
mac = hmac.new(macKey, dataToMac, 'sha256').digest()
#build the output
serializedCiphertext = iv + bytearray(
[4]) + ephemPubKeyEncoded + mac + ciphertext
return serializedCiphertext.hex()
def __init__(self, public_key=None, private_key=None):
self.id = 0
self.public_key = auto_bytes(public_key)
self.private_key = private_key
self.addr_version = None
self.use_compression = 1
if private_key == "":
private_key = None
#Generate key pairs.
if self.public_key == None and private_key == None:
self.sign_key = SigningKey.generate(curve=SECP256k1)
self.verify_key = self.sign_key.get_verifying_key()
self.private_key = self.sign_key.to_string()
self.public_key = self.verify_key.to_string()
return
#Init public key.
self.old_verify_str = None
if self.public_key != None:
self.public_key = self.parse_public_key(self.public_key)
self.verify_key = VerifyingKey.from_string(self.public_key,
SECP256k1)
self.sign_key = None
self.old_verify_str = self.verify_key.to_string()
#Init private key.
if self.private_key != None:
#Construct keys from private key.
self.private_key = self.parse_private_key(private_key)
self.sign_key = SigningKey.from_string(self.private_key, SECP256k1)
self.verify_key = self.sign_key.get_verifying_key()
#Check private key corrosponds to public key.
if self.old_verify_str != None:
if self.old_verify_str != self.verify_key.to_string():
raise Exception(
"Private key doesn't corrospond to stored public key.")
def __init__(self,
msg=None,
data=None,
filename=None,
password=None,
vals=None,
file_obj=None,
validate_point=True):
self.verifying_key = None
self.signing_key = None
if file_obj is not None:
self._from_private_key(file_obj, password)
return
if filename is not None:
self._from_private_key_file(filename, password)
return
if (msg is None) and (data is not None):
msg = Message(data)
if vals is not None:
self.signing_key, self.verifying_key = vals
else:
if msg is None:
raise SSHException('Key object may not be empty')
if msg.get_text() != 'ecdsa-sha2-nistp256':
raise SSHException('Invalid key')
curvename = msg.get_text()
if curvename != 'nistp256':
raise SSHException("Can't handle curve of type %s" % curvename)
pointinfo = msg.get_binary()
if pointinfo[0:1] != four_byte:
raise SSHException('Point compression is being used: %s' %
binascii.hexlify(pointinfo))
self.verifying_key = VerifyingKey.from_string(
pointinfo[1:],
curve=curves.NIST256p,
validate_point=validate_point)
self.size = 256
def is_signature_valid(message, signature, public_key):
"""Validate if a message has a valid signature
Args:
message (String): the message which has been signed
signature (String): the signature of the message
public_key (String): the public key
Return:
(Logical): True if the message has been signed by the public key
"""
try:
vk = VerifyingKey.from_string(bytes.fromhex(public_key))
return vk.verify(bytes.fromhex(signature), message.encode('utf-8'))
except AssertionError:
# The key is not valid
return False
except BadSignatureError:
# The signature is not valid
return False
return False
def check_signature(key, sign):
try:
private_key = hex(base62.decode(key))[2:]
except ValueError:
print("The key has invalid characters")
return False
try:
private_key = binascii.unhexlify(private_key)
except binascii.Error:
print("The key is invalid")
return False
try:
private_key = SigningKey.from_string(private_key, curve=SECP256k1)
except AssertionError:
print("The key is invalid")
return False
public_key = binascii.hexlify(
private_key.get_verifying_key().to_string()).decode('utf-8')
vk = VerifyingKey.from_string(bytes.fromhex(public_key), curve=SECP256k1)
try:
return vk.verify(bytes.fromhex(sign), 'database'.encode('utf-8'))
except BadSignatureError:
return False
def ec_mult(self, his_pubkey):
# - second call: given the pubkey of far side, calculate the shared pt on curve
# - creates session key based on that
from ecdsa.curves import SECP256k1
from ecdsa import VerifyingKey
from ecdsa.util import number_to_string
# Validate his pubkey a little: this call will check it's on the curve.
assert len(his_pubkey) == 64
his_pubkey = VerifyingKey.from_string(his_pubkey, curve=SECP256k1, hashfunc=sha256)
#print("his pubkey = %s" % b2a_hex(his_pubkey.to_string()))
# do the D-H thing
pt = self.my_key.privkey.secret_multiplier * his_pubkey.pubkey.point
# final key is sha256 of that point, serialized (64 bytes).
order = SECP256k1.order
kk = number_to_string(pt.x(), order) + number_to_string(pt.y(), order)
del self.my_key
return sha256(kk).digest()
def mitm_verify(self, sig, expected_xpub):
# First try with Pycoin
try:
from pycoin.key.BIP32Node import BIP32Node
from pycoin.contrib.msg_signing import verify_message
from pycoin.encoding import from_bytes_32
from base64 import b64encode
mk = BIP32Node.from_wallet_key(expected_xpub)
return verify_message(mk, b64encode(sig), msg_hash=from_bytes_32(self.session_key))
except ImportError:
pass
# If Pycoin is not available, do it using ecdsa
from ecdsa import BadSignatureError, SECP256k1, VerifyingKey
pubkey, chaincode = decode_xpub(expected_xpub)
vk = VerifyingKey.from_string(get_pubkey_string(pubkey), curve=SECP256k1)
try:
ok = vk.verify_digest(sig[1:], self.session_key)
except BadSignatureError:
ok = False
return ok
def wrapper(*args, **kwargs):
logger.debug('Authorizing request')
if 'Pub' not in request.headers:
raise MissingParameterError('Missing authorization parameter: '
'ECDSA public key')
if 'Nonce' not in request.headers:
raise MissingParameterError('Missing authorization parameter: '
'Nonce')
if 'Signature' not in request.headers:
raise MissingParameterError('Missing authorization parameter: '
'Signature')
key = b64decode(request.headers['Pub'].encode())
nonce = request.headers['Nonce'].encode()
signature = b64decode(request.headers['Signature'].encode())
if not database.has_key(key):
raise AuthorizationError('ECDSA public key is unregistered')
database.use_nonce(nonce) # throws exception on re-use
vk = VerifyingKey.from_string(key, curve=CURVE)
vk.verify(signature, nonce)
return fn(pub=key)
def load_keys(pos_filename='poswallet.json'):
global PUB_KEY
global PRIV_KEY
global ADDRESS
if not os.path.exists(pos_filename):
# Create new keys if none there.
gen_keys_file(pos_filename)
with open(pos_filename, 'r') as fp:
wallet = json.load(fp)
# TODO: handle encrypted wallet
PRIV_KEY = SigningKey.from_string(b64decode(
wallet['privkey'].encode('ascii')),
curve=SECP256k1)
# TODO: We could verify pubkey also, and warn if there is an error
PUB_KEY = VerifyingKey.from_string(b64decode(
wallet['pubkey'].encode('ascii')),
curve=SECP256k1)
# We recreate address rather than relying on address.txt
ADDRESS = pub_key_to_addr(PUB_KEY.to_string())
assert ADDRESS == wallet['address']
if common.VERBOSE:
print("Loaded address ", ADDRESS)
print("Loaded pubkey ", raw_to_hex(PUB_KEY.to_string()))
return True
def validate_tx_in(tx_in, transaction, a_unspent_tx_outs):
referenced_utxo = [
utxo for utxo in a_unspent_tx_outs if utxo.tx_out_id == tx_in.tx_out_id
and utxo.tx_out_index == tx_in.tx_out_index
][0]
if referenced_utxo == []:
print('referenced txOut not found: ' + json.dumps(tx_in))
return False
address = referenced_utxo.address
vk = VerifyingKey.from_string(bytes.fromhex(address), curve=SECP256k1)
try:
vk.verify(bytes.fromhex(tx_in.signature), transaction.id.encode())
except Exception as e:
# change the exception
print('invalid tx_in signature: %s txId: %s address: %s' %
(tx_in.signature, transaction.id, referenced_utxo.address))
return False
return True
def verify(pub_key, data, signature, hashfunc=sha256, curve=curve.P256,
sign_fmt='DER', sign_size=32, pub_key_fmt='RAW'):
data_bytes = data.encode()
if pub_key_fmt == 'RAW':
pub_key_encoded = pub_key
elif pub_key_fmt == '04':
pub_key_encoded = pub_key[2:]
else:
raise UnknownPublicKeyFormatError("fmt: '%s'" % pub_key_fmt)
if sign_fmt in ['RAW', 'DER']:
r, s = decode_sig(bytes.fromhex(signature), fmt=sign_fmt)
signature = encode_sig(r, s, fmt='RAW', size=sign_size)
else:
raise UnknownSignatureFormatError("fmt: '%s'" % sign_fmt)
vk = VerifyingKey.from_string(bytes.fromhex(pub_key_encoded), curve=curve,
hashfunc=hashfunc)
try:
vk.verify(signature, data_bytes)
return True
except BadSignatureError:
return False
def validate_signature(self, transaction_pool, transaction, chain):
transaction_content = transaction["TYPE"]
for input_block in transaction["INPUT"]:
transaction_content += input_block[0]
transaction_content += str(input_block[1])
for output_set in transaction["OUTPUT"]:
transaction_content += output_set[0]
transaction_content += str(output_set[1])
for i in range(len(transaction["SIGNATURE"])):
input_block = transaction["INPUT"][i]
verifying_key = None
for k in range(len(chain) - 1, -1, -1):
if input_block[0] == chain[k].transactions[1]["NUMBER"]:
verifying_key = VerifyingKey.from_string(
bytes.fromhex(chain[k].transactions[1]["OUTPUT"][
input_block[1]][0]))
if verifying_key is not None:
signature = transaction["SIGNATURE"][i]
try:
verifying_key.verify(bytes.fromhex(signature),
transaction_content.encode("utf-8"))
transaction_content += signature
except BadSignatureError:
print("Invalid signature")
self.remove_transaction(transaction_pool, transaction,
"Invalid signature")
return False
else:
return False
return True
def verifyFn(sig, public_key, msg):
vk = VerifyingKey.from_string(public_key, curve=SECP256k1)
return vk.verify(sig, msg) # True
def string_to_pub(self, pub):
return VerifyingKey.from_string(bytearray.fromhex(pub), curve=self.curve)
def pop_auth_values(post_dict):
endpoint = post_dict.pop('coreproxy_endpoint')
identity = post_dict.pop('coreproxy_identity')
private = SigningKey.from_string(unhexlify(post_dict.pop('coreproxy_private')), curve=NIST256p, hashfunc=sha256)
public = VerifyingKey.from_string(unhexlify(post_dict.pop('coreproxy_public')), curve=NIST256p, hashfunc=sha256)
return endpoint, identity, private, public
def Verify(self, issuer = None):
if issuer == None:
issuer = self
sigAlgo = self.SignatureAlgorithm()
CertDer = encoder.encode(self.Asn1Obj.getComponentByName('tbsCertificate'))
if sigAlgo == 'sha1WithRSAEncryption' or sigAlgo == 'ecdsa-with-SHA1':
from Crypto.Hash import SHA
SigHash = SHA.new(CertDer)
elif sigAlgo == 'sha256WithRSAEncryption' or sigAlgo == 'ecdsa-with-SHA256':
from Crypto.Hash import SHA256
SigHash = SHA256.new(CertDer)
elif sigAlgo == 'sha384WithRSAEncryption' or sigAlgo == 'ecdsa-with-SHA384':
from Crypto.Hash import SHA384
SigHash = SHA384.new(CertDer)
elif sigAlgo == 'sha512WithRSAEncryption' or sigAlgo == 'ecdsa-with-SHA512':
from Crypto.Hash import SHA512
SigHash = SHA512.new(CertDer)
elif sigAlgo == 'sha224WithRSAEncryption' or sigAlgo == 'ecdsa-with-SHA224':
from Crypto.Hash import SHA224
SigHash = SHA224.new(CertDer)
elif sigAlgo == 'md2WithRSAEncryption':
from Crypto.Hash import MD2
SigHash = MD2.new(CertDer)
elif sigAlgo == 'md4WithRSAEncryption':
from Crypto.Hash import MD4
SigHash = MD4.new(CertDer)
elif sigAlgo == 'md5WithRSAEncryption':
from Crypto.Hash import MD5
SigHash = MD5.new(CertDer)
else:
raise NotImplementedError('Signature algorithm not supported ({0})'.format(sigAlgo))
if issuer.PublicKeyAlgorithm() == 'rsaEncryption':
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
PubKeyDer = issuer.PublicKey().Raw()
key = RSA.importKey(PubKeyDer)
verifier = PKCS1_v1_5.new(key)
try:
if verifier.verify(SigHash, self.Signature()):
return True
else:
return False
except ValueError:
return False
elif issuer.PublicKeyAlgorithm() == 'id-ecPublicKey':
from ecdsa import VerifyingKey, NIST192p, NIST224p, NIST256p, NIST384p, NIST521p, SECP256k1
from ecdsa.util import sigdecode_der
curves = [NIST192p, NIST224p, NIST256p, NIST384p, NIST521p, SECP256k1]
TheCurve = None
for crv in curves:
if crv.name == issuer.PublicKey().CurveMap():
TheCurve = crv
break
if TheCurve == None:
raise NotImplementedError('Public Key Curve not supported ({0})'.format(issuer.PublicKey().CurveMap()))
VerKey = VerifyingKey.from_string(issuer.PublicKey().Raw(), curve=TheCurve)
try:
if VerKey.verify_digest(self.Signature(), SigHash.digest(), sigdecode=sigdecode_der):
return True
else:
return False
except:
return False
else:
raise NotImplementedError('Public key algorithm not supported ({0})'.format(issuer.PublicKeyAlgorithm()))
print("Public key: ", pub.hex())
print("Address: 0x" + address)
#priv = SigningKey.generate(curve=SECP256k1)
#pub = priv.get_verifying_key()
#print(priv.to_string())
#print(pub.to_string())
#print(priv.to_string().hex())
#print(pub.to_string().hex())
#privB: b"@\xb7:\x08\x86\x16\xde\x8a.sY\x1c\xd3\x1be'\xe8\xa0\x87h\x8b\xae\xd9\x16y\x87\x8cphq*\x13"
#pubB = b'\xa1\xfdo\xdc\x9b\xd0s\xad1:\x93\xb2\xe5\x92\xac\x993\xd5\xae\x17\x83\xb7Z\x007to\x9c\xc7G\xbc\x88DE\xf0\x94$OZK\x1e{\x80\xd4\xb0\xedp\x17Kv\xae\x17\xe9\xec\x9a\xaa\xa9qP\xe7\x11\xae\\?'
privT = '40b73a088616de8a2e73591cd31b6527e8a087688baed91679878c7068712a13'
pubT = 'a1fd6fdc9bd073ad313a93b2e592ac9933d5ae1783b75a0037746f9cc747bc884445f094244f5a4b1e7b80d4b0ed70174b76ae17e9ec9aaaa97150e711ae5c3f'
privB = bytes.fromhex(privT)
pubB = bytes.fromhex(pubT)
print(privB)
print(pubB)
sk = SigningKey.from_string(privB, curve=SECP256k1)
vk = VerifyingKey.from_string(pubB, curve=SECP256k1)
print(sk.to_string().hex())
print(vk.to_string().hex())
print ('------------------------------')
mes = 'i love sex'.encode()
sign = sk.sign(mes)
print(sign.hex())
print(vk.verify(sign, mes))
assert vk.verify(sign, mes)
def verify_message(self, message, pubKey, signature):
vk = VerifyingKey.from_string(bytearray.fromhex(pubKey))
return vk.verify(bytearray.fromhex(signature), message.encode("utf-8"))
def from_bytes(cls, b: bytes) -> 'PublicKey':
if len(b) == 65:
b = b[1:] # remove 0x04 prefix
return cls(VerifyingKey.from_string(b, curve=SECP256k1))
def main(sk_filename):
global processed_txids, transaction_id
sk = SigningKey.from_pem(open(sk_filename).read())
vk = sk.get_verifying_key()
pk = str(base64.b64encode(vk.to_string()), encoding='utf8')
timestamp = str(int(time.time()-300))
leaders = db.query("SELECT * FROM leaders WHERE pk = %s AND timestamp > %s", pk, timestamp)
if not leaders:
election(sk_filename)
else:
# leader = leaders[0]
transactions = db.query("SELECT * FROM transactions WHERE id > %s ORDER BY id ASC LIMIT 20", transaction_id)
random.shuffle(transactions)
for transaction in transactions:
if transaction.txid in processed_txids:
continue
data = json.loads(transaction.data)
sender = data["transaction"]["sender"]
receiver = data["transaction"]["receiver"]
amount = data["transaction"]["amount"]
signature = data["signature"]
chain_txids = set()
sender_blocks = lastest_block(sender)
receiver_blocks = lastest_block(receiver)
if len(set(sender_blocks+receiver_blocks)) >= 1:
if len(set(sender_blocks+receiver_blocks)) == 1:
txs = db.query("SELECT * FROM graph WHERE hash = %s", (sender_blocks+receiver_blocks)[0])
else:
txs = db.query("SELECT * FROM graph WHERE hash IN %s", set(sender_blocks+receiver_blocks))
for tx in txs:
tx_data = json.loads(tx.data)
txid = tx_data["transaction"]["txid"]
chain_txids.add(txid)
processed_txids.add(txid)
if transaction.txid in chain_txids:
continue
from_block = sender_blocks[-1] if sender_blocks else sender
to_block = receiver_blocks[-1] if receiver_blocks else receiver
# query from_block and to_block
# get balance and calcuate
# update transaction's from_block and to_block
data["from_block"] = from_block
data["to_block"] = to_block
data["sender_balance"] = ""
data["receiver_balance"] = ""
data["leader_publickey"] = pk
vk2 = VerifyingKey.from_string(base64.b64decode(sender), curve=NIST384p)
assert vk2.verify(base64.b64decode(signature), json.dumps(data["transaction"]).encode('utf-8'))
# signature = sk.sign(json.dumps(transaction).encode('utf-8'))
# data = {"transaction": transaction, "signature": str(base64.b64encode(signature), encoding="utf-8")}
for nonce in range(100000000):
block_hash = hashlib.sha256((json.dumps(data) + pk + str(nonce)).encode('utf8')).hexdigest()
if block_hash < certain_value:
print("tx", nonce, block_hash)
try:
# query if any node taken from_block or to_block
db.execute("INSERT INTO graph (hash, from_block, to_block, sender, receiver, nonce, data) VALUES (%s, %s, %s, %s, %s, %s, %s)", block_hash, from_block, to_block, sender, receiver, nonce, transaction.data)
# db.execute("INSERT INTO graph (hash, from_block, to_block, sender, receiver, nonce, data, transaction_id, timestamp) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s)", block_hash, from_block, to_block, sender, receiver, nonce, transaction.data, transaction.id, int(time.time()))
processed_txids.add(transaction.txid)
break
except:
pass
time.sleep(1)
transaction_id += 20
time.sleep(0.1)
def addr_to_vk(addr):
'''
Convert an address back into a verifying key format so you can verify a signature.
'''
return VerifyingKey.from_string(base58.b58decode(bytes(addr, 'utf-8')))
def verify_vin(txid, index):
txdump = dump_tx_ecdsa(txid, index)
#i, pub, txid, s, r, x, z
# | | \--- hash
# | \------ pub decoded?
# \---------------------- pub orig?
import pprint
pprint.pprint(txdump)
print txdump['z'].decode("hex")
print int(txdump['z'],16)
def fix_pubkey(p):
if p.startswith("04"):
return p[2:]
return p
txdump['pub'] = fix_pubkey(txdump['pub'])
#vk = VerifyingKey.from_public_point(int(txdump['x'],16),curve=curve)
#vk = VerifyingKey.from_string(txdump['pub'], curve=curve)
#print vk
#logger.debug("verify --> %s " % (vk.pubkey.verifies(int(digest.encode("hex"), 16), Signature(sig[0], sig[1]))))
# get raw transaction (txid) <-- vin[0]: scriptSig
rpc = BtcRpc("http://*****:*****@127.0.0.1:8332")
rawtx = rpc.rpc.getrawtransaction(txid)
jsontxverbose = rpc.rpc.getrawtransaction(txid,1)
#pprint.pprint(jsontxverbose)
jsontx = pybitcointools.deserialize(rawtx)
pprint.pprint(jsontx)
scriptSigasm = jsontxverbose['vin'][index]['scriptSig']['asm']
logger.debug(scriptSigasm)
scriptSig = jsontx['ins'][index]['script']
sigpubdecoded = asn1der.decode(scriptSig.decode("hex")[1:]) # skip first push
sig = long(sigpubdecoded[0][0]), long(sigpubdecoded[0][1])
pubkey = sigpubdecoded[1]
sighash_type = pubkey[0]
logger.debug("sighash type: %r" % sighash_type)
push = pubkey[1]
btc_pubkey_type = pubkey[2]
pubkey = pubkey[3:]
logger.debug("r %s s %s"%(hex(sig[0]),hex(sig[1])))
logger.debug("pubkey: %r"%pubkey.encode("hex"))
logger.debug("txdump: %r"%txdump['pub'])
'''
# generate signdata
# replace input script with funding script of 17SkEw2md5avVNyYgj6RiXuQKNwkXaxFyQ
for txin in jsontx['ins']:
txin['script']=''
funding_txid = jsontxverbose['vin'][index]['txid']
funding_tx = rpc.rpc.getrawtransaction(funding_txid,1)
#pprint.pprint(funding_tx)
funding_script = funding_tx['vout'][0]['scriptPubKey']['hex']
jsontx['ins'][index]['script']=funding_script
signdata= pybitcointools.serialize(jsontx) + "01000000" #SIGHASH ALL
import hashlib
digest = hashlib.sha256(hashlib.sha256(signdata.decode("hex")).digest()).digest()
logger.debug(digest[::-1].encode("hex"))
pause("--->")
'''
pause("create verifying key...")
vk = VerifyingKey.from_string(txdump['pub'].decode("hex"), curve=curve)
digest = txdump['z']
print repr(pubkey)
print repr(txdump['pub'])
z = int(digest.decode("hex"),16)
verifies = vk.pubkey.verifies(z,Signature(sig[0],sig[1]))
logger.debug("verify --> %s "%(verifies))
if not verifies:
pause("--verify false!--",critical=True)
#print vk.verify_digest(scriptSigasm.split("[ALL]",1)[0].decode("hex"), digest, sigdecode=ecdsa.util.sigdecode_der)
return BTCSignature(sig=Signature(sig[0],sig[1]),
h=z,
pubkey=pubkey,
)
def decode(pr: str) -> Invoice:
"""bolt11 decoder,
based on https://github.com/rustyrussell/lightning-payencode/blob/master/lnaddr.py
"""
hrp, decoded_data = bech32_decode(pr)
if hrp is None or decoded_data is None:
raise ValueError("Bad bech32 checksum")
if not hrp.startswith("ln"):
raise ValueError("Does not start with ln")
bitarray = _u5_to_bitarray(decoded_data)
# final signature 65 bytes, split it off.
if len(bitarray) < 65 * 8:
raise ValueError("Too short to contain signature")
# extract the signature
signature = bitarray[-65 * 8 :].tobytes()
# the tagged fields as a bitstream
data = bitstring.ConstBitStream(bitarray[: -65 * 8])
# build the invoice object
invoice = Invoice()
# decode the amount from the hrp
m = re.search("[^\d]+", hrp[2:])
if m:
amountstr = hrp[2 + m.end() :]
if amountstr != "":
invoice.amount_msat = _unshorten_amount(amountstr)
# pull out date
invoice.date = data.read(35).uint
while data.pos != data.len:
tag, tagdata, data = _pull_tagged(data)
data_length = len(tagdata) / 5
if tag == "d":
invoice.description = _trim_to_bytes(tagdata).decode("utf-8")
elif tag == "h" and data_length == 52:
invoice.description_hash = _trim_to_bytes(tagdata).hex()
elif tag == "p" and data_length == 52:
invoice.payment_hash = _trim_to_bytes(tagdata).hex()
elif tag == "x":
invoice.expiry = tagdata.uint
elif tag == "n":
invoice.payee = _trim_to_bytes(tagdata).hex()
# this won't work in most cases, we must extract the payee
# from the signature
elif tag == "s":
invoice.secret = _trim_to_bytes(tagdata).hex()
elif tag == "r":
s = bitstring.ConstBitStream(tagdata)
while s.pos + 264 + 64 + 32 + 32 + 16 < s.len:
route = Route(
pubkey=s.read(264).tobytes().hex(),
short_channel_id=_readable_scid(s.read(64).intbe),
base_fee_msat=s.read(32).intbe,
ppm_fee=s.read(32).intbe,
cltv=s.read(16).intbe,
)
invoice.route_hints.append(route)
# BOLT #11:
# A reader MUST check that the `signature` is valid (see the `n` tagged
# field specified below).
# A reader MUST use the `n` field to validate the signature instead of
# performing signature recovery if a valid `n` field is provided.
message = bytearray([ord(c) for c in hrp]) + data.tobytes()
sig = signature[0:64]
if invoice.payee:
key = VerifyingKey.from_string(unhexlify(invoice.payee), curve=SECP256k1)
key.verify(sig, message, hashlib.sha256, sigdecode=sigdecode_string)
else:
keys = VerifyingKey.from_public_key_recovery(
sig, message, SECP256k1, hashlib.sha256
)
signaling_byte = signature[64]
key = keys[int(signaling_byte)]
invoice.payee = key.to_string("compressed").hex()
return invoice
def kirk11(pubkey, sig, data):
vk = VerifyingKey.from_string(pubkey, curve=_kirk11_curve())
vk.verify(sig, data)
def verify_message(self):
vk = VerifyingKey.from_string(bytearray.fromhex(self.voter_address))
return vk.verify(bytearray.fromhex(self.signature), self.raw_vote.encode("utf-8"))
def onMessage(self, payload, isBinary):
data = {}
print("onmessage")
allify = {}
if isBinary:
print("Binary message received: {0} bytes".format(len(payload)))
else:
payloaded = json.loads(payload.decode('utf-8'))
print(payloaded["host"])
if str(payloaded["host"]) == str(ip):
print("bu zaten sensin")
else:
payloaded = json.loads(payload.decode('utf-8'))
if 'sender' in payloaded:
data['sender'] = str(payloaded["sender"]) #1
data['receiver'] = str(payloaded["receiver"]) #2
data['previous_hash'] = str(transaction.objects.all().last().blockhash) #3
data['amount'] = str(payloaded["amount"]) #4
data['timestamp'] = str(payloaded["timestamp"]) #5
data["nonce"] = str(payloaded["nonce"])
data = collections.OrderedDict(sorted(data.items()))
datashash = hashlib.sha256(json.dumps(data).encode('utf-8')).hexdigest()
sig = json.loads(payloaded["P2PKH"])
print("datahashhere", datashash.encode('utf-8'))
print("sigbyte is here", sig)
print("sende weas here", payloaded["sender"])
wllt = generate_wallet_from_pkey(payloaded["sender"])
try:
sigbyte = bytes.fromhex(sig)
vk = VerifyingKey.from_string(bytes.fromhex(payloaded["sender"]), curve=SECP256k1)
tt = vk.verify(sigbyte, datashash.encode('utf-8')) # True
except BadSignatureError:
print("unbelieveable")
data["response"] = "unbelieveable"
newtrans = transaction(sender=payloaded["sender"],
senderwallet=wllt,
receiver=payloaded["receiver"],
prevblockhash=transaction.objects.all().last().blockhash,
blockhash=payloaded["blockhash"],
amount=payloaded["amount"],
nonce=payloaded["nonce"],
first_timestamp=payloaded["timestamp"],
P2PKH=payloaded["P2PKH"],
verification=False
).save()
print("badsignature")
data["response"] = "bad signature"
return False
newtrans = transaction(sender=payloaded["sender"],
senderwallet=wllt,
receiver=payloaded["receiver"],
prevblockhash=transaction.objects.all().last().blockhash,
blockhash=payloaded["blockhash"],
amount=payloaded["amount"],
nonce=payloaded["nonce"],
first_timestamp=payloaded["timestamp"],
P2PKH=payloaded["P2PKH"],
verification=True
).save()
data["response"] = "Everything works correctly."
return True
else:
print("other message")
BroadcastServerFactory.broadcast(payload)
def from_string(cls, string):
return cls(VerifyingKey.from_string(string, curve=SECP256k1))
def decode_public_key(public_key_string: str) -> PublicKey:
"""
Base58 String -> PublicKey
"""
hex_key = bytes.fromhex(decode(public_key_string))
return PublicKey.from_string(hex_key, curve=curve)
def verificarAssinatura(self, dados, assinatura, chavePublica):
_vk = VerifyingKey.from_string(chavePublica)
return _vk.verify(assinatura, dados.encode())