def test_003_block_build(self):
self.T3.ready(self.private_key)
at = blockchain.Attachment()
at.add_data(b'I am the king of the kings')
at.ready()
bd = blockchain.BlockData([self.T3, self.T3], at)
block = blockchain.Block(0, time.time(), bd, bytes(32), 33)
self.assertGreater(len(block.b), 0)
def test_010_block_search(self):
from cryptography.hazmat.primitives.serialization import load_pem_private_key
private_key1 = load_pem_private_key(b'-----BEGIN PRIVATE KEY-----\nMIGEAgEAMBAGByqGSM49AgEGBSuBBAAKBG0w'
b'awIBAQQg64DiDBUkuGC5rrTfH6uy\nHt6vhvHrMHj3Gm64SZtdqtKhRANCAATMIea'
b'IK4vT0ni00F6GGW40qioinPFgXjsj\n6sZGivW9Ipj+zcDfPc7RxZuFeKFmbtVaUX'
b'Z877DM4C8ELZs2DPVQ\n-----END PRIVATE KEY-----\n',
None, default_backend())
public_key = b'-----BEGIN PUBLIC KEY-----\nMFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAEzCHmiCuL09J4tNBehhluNKoqIpzx' \
b'YF47\nI+rGRor1vSKY/s3A3z3O0cWbhXihZm7VWlF2fO+wzOAvBC2bNgz1UA==\n-----END PUBLIC KEY-----\n'
sha = hashlib.sha256()
sha.update(public_key)
public_key_hash = sha.digest()
tinput = [
(b'O\x1e,-\xe1\xa0!\x16D\x87\xcc\x923\xf7\xf6\xca\xad\xd1\t\x8eV\xdc\xe8t}N\xfa\x8af\xbe\xe7\xef', 0)
]
T1 = blockchain.TransInput(tinput, public_key_hash)
public_key_hash = []
private_keys = []
public_keys = []
for i in range(6):
private_key = ec.generate_private_key(ec.SECP256K1, default_backend())
private_keys.append(private_key)
public_key = private_key.public_key()
public_key = public_key.public_bytes(Encoding.PEM, PublicFormat.SubjectPublicKeyInfo)
public_keys.append(public_key)
sha = hashlib.sha256()
sha.update(public_key)
public_key_hash.append(sha.digest())
toutput = [(7, public_key_hash[i]) for i in range(6)]
T2 = blockchain.TransOutput(toutput)
T = blockchain.Transaction(T1, T2)
T.ready(private_key1)
at = blockchain.Attachment()
at.add_data(b'latex')
at.ready()
bd = blockchain.BlockData([T], at)
t = time.time()
block = blockchain.Block(1, t, bd, bytes(32), 33)
chain = blockchain.Blockchain()
block.previous_hash = chain.chain.queue[0].hash
chain.add_block(block)
block1 = chain.search_block(index=1)
self.assertEqual(block1.data.attachment.content, b'latex')
block1 = chain.search_block(hash=block.hash)
self.assertEqual(block1.data.attachment.content, b'latex')
block1 = chain.search_block(timestamp=t)
self.assertEqual(block1.data.attachment.content, b'latex')
def test_009_block_rebuild(self):
private_key = ec.generate_private_key(ec.SECP256K1, default_backend())
public_key = private_key.public_key()
public_key = public_key.public_bytes(Encoding.DER, PublicFormat.SubjectPublicKeyInfo)
sha = hashlib.sha256()
sha.update(public_key)
public_key_hash = sha.digest()
tinput = [
(bytes(32), 1),
(bytes(32), 2),
(public_key_hash, 3),
(public_key_hash, 4)
]
T1 = blockchain.TransInput(tinput, public_key_hash)
public_key_hash = []
for i in range(5):
private_key = ec.generate_private_key(ec.SECP256K1, default_backend())
public_key = private_key.public_key()
public_key = public_key.public_bytes(Encoding.DER, PublicFormat.SubjectPublicKeyInfo)
sha = hashlib.sha256()
sha.update(public_key)
public_key_hash.append(sha.digest())
from random import randint
toutput = [(randint(0, 10240), public_key_hash[i]) for i in range(5)]
T2 = blockchain.TransOutput(toutput)
T = blockchain.Transaction(T1, T2)
T.ready(private_key)
at = blockchain.Attachment()
at.add_data(b'I am the king of the kings')
at.ready()
bd = blockchain.BlockData([T], at)
block = blockchain.Block(0, time.time(), bd, bytes(32), 33)
block_copy = blockchain.Block.unpack(block.b)
self.assertEqual(block.b, block_copy.b)
self.assertEqual(block.hash, block_copy.hash)
self.assertEqual(block.previous_hash, block_copy.previous_hash)
self.assertEqual(block.timestamp, block_copy.timestamp)
self.assertEqual(block.index, block_copy.index)
self.assertEqual(block.data.attachment.content, block_copy.data.attachment.content)
self.assertEqual(block.nonce, block_copy.nonce)