Avoid empty nonce string from tx

CHANGELOG

@@ -2,6 +2,7 @@
 	- Implement DictKeystore
 	- Remove unused insert_key method in keystore interface
 	- Add transaction executor helper, with adapter helper for eth
+	- Fix bitlength of integers in all tx fields before rlp encoding
 * 0.4.12
 	- Enforce hex strings in signer backend for sign message
 * 0.4.11

crypto_dev_signer/eth/signer/defaultsigner.py

@@ -34,7 +34,10 @@ class ReferenceSigner(Signer):
         g = h.digest()
         k = keys.PrivateKey(self.keyGetter.get(tx.sender, password))
         z = keys.ecdsa_sign(message_hash=g, private_key=k)
-        tx.v = (tx.v * 2) + 35 + z[64]
+        vnum = int.from_bytes(tx.v, 'big')
+        v = (vnum * 2) + 35 + z[64]
+        byts = ((v.bit_length()-1)/8)+1
+        tx.v = v.to_bytes(int(byts), 'big')
         tx.r = z[:32]
         tx.s = z[32:64]
         return z

crypto_dev_signer/eth/transaction.py

@@ -35,21 +35,36 @@ class EIP155Transaction:
             gas_price = int(tx['gasPrice'])
         except ValueError:
             gas_price = int(tx['gasPrice'], 16)
+        byts = ((gas_price.bit_length()-1)/8)+1
+        gas_price = gas_price.to_bytes(int(byts), 'big')
 
         try:
             start_gas = int(tx['gas'])
         except ValueError:
             start_gas = int(tx['gas'], 16)
+        byts = ((start_gas.bit_length()-1)/8)+1
+        start_gas = start_gas.to_bytes(int(byts), 'big')
 
         try:
             value = int(tx['value'])
         except ValueError:
             value = int(tx['value'], 16)
+        byts = ((value.bit_length()-1)/8)+1
+        value = value.to_bytes(int(byts), 'big')
 
         try:
             nonce = int(nonce)
         except ValueError:
             nonce = int(nonce, 16)
+        byts = ((nonce.bit_length()-1)/8)+1
+        nonce = nonce.to_bytes(int(byts), 'big')
+
+        try:
+            chainId = int(chainId)
+        except ValueError:
+            chainId = int(chainId, 16)
+        byts = ((chainId.bit_length()-1)/8)+1
+        chainId = chainId.to_bytes(int(byts), 'big')
 
         self.nonce = nonce
         self.gas_price = gas_price
@@ -64,7 +79,6 @@ class EIP155Transaction:
 
 
     def rlp_serialize(self):
-        b = self.nonce.to_bytes(8, byteorder='little')
         s = [
             self.nonce,
             self.gas_price,
@@ -79,14 +93,24 @@ class EIP155Transaction:
         return rlp_encode(s)
 
     def serialize(self):
-        return {
-            'nonce': add_hex_prefix(hex(self.nonce)),
-            'gasPrice': add_hex_prefix(hex(self.gas_price)),
-            'gas': add_hex_prefix(hex(self.start_gas)),
+        tx = {
+            'nonce': add_hex_prefix(self.nonce.hex()),
+            'gasPrice': add_hex_prefix(self.gas_price.hex()),
+            'gas': add_hex_prefix(self.start_gas.hex()),
             'to': add_hex_prefix(self.to.hex()),
-            'value': add_hex_prefix(hex(self.value)),
+            'value': add_hex_prefix(self.value.hex()),
             'data': add_hex_prefix(self.data.hex()),
-            'v': add_hex_prefix(hex(self.v)),
+            'v': add_hex_prefix(self.v.hex()),
             'r': add_hex_prefix(self.r.hex()),
             's': add_hex_prefix(self.s.hex()),
             }
+        if tx['data'] == '':
+            tx['data'] = '0x'
+
+        if tx['value'] == '':
+            tx['value'] = '0x00'
+
+        if tx['nonce'] == '':
+            tx['nonce'] = '0x00'
+
+        return tx

setup.py

@@ -24,7 +24,7 @@ f.close()
 
 setup(
         name="crypto-dev-signer",
-        version="0.4.13b4",
+        version="0.4.13b8",
         description="A signer and keystore daemon and library for cryptocurrency software development",
         author="Louis Holbrook",
         author_email="dev@holbrook.no",

test/test_sign.py

@@ -68,14 +68,14 @@ class TestSign(unittest.TestCase):
         t = EIP155Transaction(tx_ints, 0)
         self.assertRegex(t.__class__.__name__, "Transaction")
         s = t.serialize()
-        self.assertEqual('{}'.format(s), "{'nonce': '0x0', 'gasPrice': '0x4a817c800', 'gas': '0x5208', 'to': '0x3535353535353535353535353535353535353535', 'value': '0x3e8', 'data': '0xdeadbeef', 'v': '0x1', 'r': '', 's': ''}")
+        self.assertEqual('{}'.format(s), "{'nonce': '', 'gasPrice': '0x04a817c800', 'gas': '0x5208', 'to': '0x3535353535353535353535353535353535353535', 'value': '0x03e8', 'data': '0xdeadbeef', 'v': '0x01', 'r': '', 's': ''}")
         r = t.rlp_serialize()
         self.assertEqual(r.hex(), 'ea808504a817c8008252089435353535353535353535353535353535353535358203e884deadbeef018080')
 
         t = EIP155Transaction(tx_hexs, 0)
         self.assertRegex(t.__class__.__name__, "Transaction")
         s = t.serialize()
-        self.assertEqual('{}'.format(s), "{'nonce': '0x0', 'gasPrice': '0x4a817c800', 'gas': '0x5208', 'to': '0x3535353535353535353535353535353535353535', 'value': '0x3e8', 'data': '0xdeadbeef', 'v': '0x1', 'r': '', 's': ''}")
+        self.assertEqual('{}'.format(s), "{'nonce': '', 'gasPrice': '0x04a817c800', 'gas': '0x5208', 'to': '0x3535353535353535353535353535353535353535', 'value': '0x03e8', 'data': '0xdeadbeef', 'v': '0x01', 'r': '', 's': ''}")
         r = t.rlp_serialize()
         self.assertEqual(r.hex(), 'ea808504a817c8008252089435353535353535353535353535353535353535358203e884deadbeef018080')