usage example

.gitignore

@@ -4,6 +4,7 @@ __pycache__
 # Packaging
 build/
 dist/
+*.egg-info
 
 # Pipenv
 .venv

Pipfile

@@ -6,7 +6,7 @@ verify_ssl = true
 
 [dev-packages]
 pytest = "~=4.0"
-flake8 = "==3.6"
+flake8 = "==3.7"
 
 
 [packages]

README.md

@@ -5,10 +5,35 @@ This library provides a low-level interface for interacting with different Binan
 TODO
 
 ## Usage
+The following is an example that uses the `ecdsa` library to sign.
+
 ```python3
-from binance_transaction import BnbTransaction
+import ecdsa
+def uncompressed_public_key(sk):
+    """ Derive uncompressed public key """
+    order = sk.curve.generator.order()
+    p = sk.verifying_key.pubkey.point
+    x_str = ecdsa.util.number_to_string(p.x(), order)
+    y_str = ecdsa.util.number_to_string(p.y(), order)
+    uncompressed = b'\x04' + x_str + y_str
+    return uncompressed
+
+
+from binance_transaction import BnbTransaction, NewOrder, address_bytes, BUY, GTE, LIMIT_ORDER
 
-# TODO
+sk = ecdsa.SigningKey.from_pem(open('secp256k1-key.pem').read())
+from_address = 'bnb100dxzy02a6k7vysc5g4kk4fqamr7jhjg4m83l0'
+account_number = 96025  # https://docs.binance.org/api-reference/dex-api/paths.html#apiv1accountaddress
+sequence_number = 888
+tx = BnbTransaction(account_number, sequence_number)
+order_id = f'{address_bytes(from_address).hex().upper()}-{sequence_number + 1}'
+tx.add_msg(NewOrder(from_address, order_id, 'BNB_TUSDB-888', LIMIT_ORDER, BUY, 3500000000, 500000000, GTE))
+print(tx.signing_json())
+sig = sk.sign_digest(tx.signing_hash())
+public_key = uncompressed_public_key(sk)
+tx.apply_sig(sig, public_key)
+signed_transaction_bytes = tx.encode()
+print(f'Signed bytes: {signed_transaction_bytes.hex()}')
 ```
 
 ## Support

binance_transaction/__init__.py

@@ -1,6 +1,12 @@
 from .bech32 import bech32_encode, address_bytes
 from .base import Amino, Repeated, String, Address, StringVarInt, StringToken, Token, VarInt, make_prefix
 from .crypto import uncompress_key, compress_key, verify_sig
+from .bnb_transaction import BnbTransaction, TestBnbTransaction
+from .dex import DexList, NewOrder, CancelOrder, BUY, SELL, GTE, IOC, LIMIT_ORDER
+from .gov import Proposal, Vote
+from .token import Send, Issue, Mint, Burn, Freeze, Unfreeze, TimeLock, TimeUnlock, TimeRelock
+from .msg import Msg
+from .signature import BnbSignature, PubKeySecp256k1
 
 
 name = "binance_transaction"

binance_transaction/bnb_transaction.py

@@ -27,7 +27,7 @@ class BnbTransaction(Amino):
     def chain_id():
         return String("Binance-Chain-Tigris")
 
-    def __init__(self, account_number, sequence, source):
+    def __init__(self, account_number, sequence, source='887'):
         dict.__init__(
             self,
             account_number=StringVarInt(account_number),

binance_transaction/dex.py

@@ -14,6 +14,18 @@
 """
 
 
+# side
+BUY = 1
+SELL = 2
+
+# timeinforce
+GTE = 1
+IOC = 3
+
+# ordertype
+LIMIT_ORDER = 2
+
+
 class DexList(Amino):
     def __init__(self, from_address, proposal_id, base_asset_symbol, quote_asset_symbol, init_price):
         dict.__init__(

binance_transaction/gov.py

@@ -1,4 +1,6 @@
-from binance_transaction.base import Amino, Repeated, String, Address, StringVarInt, StringToken, Token, VarInt, make_prefix
+from binance_transaction.base import (
+    Amino, Repeated, String, Address, StringVarInt, StringToken, Token, VarInt, make_prefix
+)
 
 
 """
@@ -8,6 +10,7 @@
 Their message type usually starts with cosmos-sdk/*
 
 * Proposal (cosmos-sdk/MsgSubmitProposal)
+* Vote
 """
 
 

setup.py

@@ -5,10 +5,11 @@
 
 setuptools.setup(
     name="binance_transaction",
-    version="0.0.1",
+    version="0.0.3",
     author="William Morriss",
     author_email="[email protected]",
     description="Binance Chain Transactions",
+    install_requires=['ecdsa'],
     long_description=long_description,
     long_description_content_type="text/markdown",
     url="https://github.com/trusttoken/bnb-tx-python",

tox.ini

@@ -2,3 +2,5 @@
 
 max-line-length = 120
 exclude = build,.venv
+per-file-ignores =
+    binance_transaction/__init__.py:F401