commit 0ab17dc47495a993576bada654bd106d8a488745
parent 11be7b26f44455fb11a25b0ce747de46a5b63daa
Author: nolash <dev@holbrook.no>
Date: Thu, 6 Aug 2020 11:07:18 +0200
Add readme, changelog...
Diffstat:
11 files changed, 845 insertions(+), 80 deletions(-)
diff --git a/CHANGELOG b/CHANGELOG
@@ -0,0 +1,3 @@
+* 0.0.1
+ - Introduce signer, transaction, keystore packages
+ - Add test for keystore and signer
diff --git a/LICENSE b/LICENSE
@@ -0,0 +1,674 @@
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+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/README.md b/README.md
@@ -0,0 +1,56 @@
+# CIC PLATFORM SIGNER
+
+This package is written because at the time no good solution seemed to exist for solving the following combined requirements and issues:
+
+* A service has custody of its users' private keys.
+* The are a large number of private keys involved (tens of thousands minimum).
+* Need to sign transactions conforming to EIP-155, with the ability to arbitrarily specify the "chain id".
+* Do not want to store the keys inside an ethereum node, especially not the one connected to the network.
+* Want to use the "standard" web3 JSON-RPC interface, so that the component can be easily replaced later.
+* Multiple providers don't work on either web3.js and/or web3.py.
+* As a bonus, provide a practical keystore solution for testing in general for web3 projects.
+
+## TECHNICAL OVERVIEW
+
+### Scripts
+
+Two scripts are currently available:
+
+### `server.py`
+
+An Unix socket IPC server implementing the `web3.eth.personal` namespace of the web3 `json-rpc` "standard."
+
+### `web3_middleware.py`
+
+Demonstrates use of the IPC server as middleware for handling calls to the `personal_*` methods.
+
+### Classes
+
+The classes and packages provided are:
+
+#### keystore
+
+- **Keystore**: Interface definition
+- **ReferenceKeystore**: Implements the `Keystore` interface, with a postgresql backend expecting sql schema as defined in `ReferenceKeystore.schema`
+
+#### transaction
+
+- **Transaction**: Interface definition.
+- **EIP155Transaction**: Creates transaction serializations appropriate for EIP155 replay protected signatures. Accepts a web3 format transaction dict as constructor argument together with nonce and optional chainId.
+
+#### signer
+
+- **Signer**: Interface definition. Its `signTransaction` method expects an object implementing the `Transaction` interface.
+- **ReferenceSigner** Implements `Signer`, accepting a single argument of type `Keystore` interface.
+
+## VERSION
+
+This software is 0.0.1 alpha state and very brittle.
+
+## LICENSE
+
+GPLv3
+
+## LEGAL MUMBO-JUMBO
+
+No responsibility assumed for any use of this software. You're on your own, as usual.
diff --git a/scripts/server.py b/scripts/server.py
@@ -129,7 +129,7 @@ def init():
'symmetric_key': secret,
}
db = ReferenceDatabase('cic_signer', **kw)
- signer = ReferenceSigner(db.get)
+ signer = ReferenceSigner(db)
if __name__ == '__main__':
diff --git a/src/keystore/__init__.py b/src/keystore/__init__.py
@@ -1 +1 @@
-from keystore.postgres import ReferenceDatabase
+from keystore.postgres import ReferenceKeystore
diff --git a/src/keystore/postgres.py b/src/keystore/postgres.py
@@ -10,6 +10,7 @@ from eth_keys.backends import NativeECCBackend
import sha3
from common import strip_hex_prefix
+from keystore.interface import Keystore
keyapi = KeyAPI(NativeECCBackend)
@@ -21,10 +22,24 @@ logg = logging.getLogger(__file__)
def to_bytes(x):
return x.encode('utf-8')
-
-class ReferenceDatabase:
+
+
+
+class ReferenceKeystore(Keystore):
+
+ schema = [
+ """CREATE TABLE ethereum (
+ id SERIAL NOT NULL PRIMARY KEY,
+ key_ciphertext VARCHAR(256) NOT NULL,
+ wallet_address_hex CHAR(40) NOT NULL
+ );
+""",
+ """CREATE UNIQUE INDEX ethereum_address_idx ON ethereum ( wallet_address_hex );
+""",
+ ]
+
def __init__(self, dbname, **kwargs):
self.conn = psycopg2.connect('dbname=' + dbname)
self.cur = self.conn.cursor()
@@ -32,8 +47,9 @@ class ReferenceDatabase:
def get(self, address, password=None):
+ safe_address = strip_hex_prefix(address)
s = sql.SQL('SELECT key_ciphertext FROM ethereum WHERE wallet_address_hex = %s')
- self.cur.execute(s, [ address ] )
+ self.cur.execute(s, [ safe_address ] )
k = self.cur.fetchone()[0]
return self._decrypt(k, password)
diff --git a/src/signer/defaultsigner.py b/src/signer/defaultsigner.py
@@ -15,7 +15,7 @@ class Signer:
self.keyGetter = keyGetter
- def signTransaction(self, tx):
+ def signTransaction(self, tx, password=None):
raise NotImplementedError
@@ -32,7 +32,7 @@ class ReferenceSigner(Signer):
h = sha3.keccak_256()
h.update(s)
g = h.digest()
- k = keys.PrivateKey(self.keyGetter(tx.sender, password))
+ 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]
tx.r = z[:32]
diff --git a/src/transaction.py b/src/transaction.py
@@ -8,6 +8,15 @@ from common import strip_hex_prefix
logg = logging.getLogger(__name__)
class Transaction:
+
+ def rlp_serialize(self):
+ raise NotImplementedError
+
+ def serialize(self):
+ raise NotImplementedError
+
+
+class EIP155Transaction:
def __init__(self, tx, nonce, chainId=1):
@@ -21,8 +30,8 @@ class Transaction:
self.value = int(tx['value'])
self.data = data
self.v = chainId
- self.r = 0
- self.s = 0
+ self.r = b''
+ self.s = b''
self.sender = strip_hex_prefix(tx['from'])
diff --git a/test/test_database.py b/test/test_database.py
@@ -1,61 +0,0 @@
-#!/usr/bin/python
-
-import unittest
-import logging
-import base64
-
-import psycopg2
-from psycopg2 import sql
-from cryptography.fernet import Fernet, InvalidToken
-
-from keystore import ReferenceDatabase
-
-logging.basicConfig(level=logging.DEBUG)
-logg = logging.getLogger()
-
-
-class TestDatabase(unittest.TestCase):
-
- conn = None
- cur = None
- symkey = None
- address_hex = None
- db = None
-
- def setUp(self):
- # arbitrary value
- symkey_hex = 'E92431CAEE69313A7BE9E443C4ABEED9BF8157E9A13553B4D5D6E7D51B5021D9'
- self.symkey = bytes.fromhex(symkey_hex)
- self.address_hex = '9FA61f0E52A5C51b43f0d32404625BC436bb7041'
-
- kw = {
- 'symmetric_key': self.symkey,
- }
- self.db = ReferenceDatabase('signer_test', **kw)
- self.db.cur.execute("""CREATE TABLE ethereum (
- id SERIAL NOT NULL PRIMARY KEY,
- key_ciphertext VARCHAR(256) NOT NULL,
- wallet_address_hex CHAR(40) NOT NULL
- );
-""")
- self.db.cur.execute("CREATE UNIQUE INDEX ethereum_address_idx ON ethereum ( wallet_address_hex );")
- self.db.conn.commit()
- self.db.new(self.address_hex, 'foo')
-
-
- def tearDown(self):
- self.db.conn = psycopg2.connect('dbname=signer_test')
- self.db.cur = self.db.conn.cursor()
- self.db.cur.execute('DROP INDEX ethereum_address_idx;')
- self.db.cur.execute('DROP TABLE ethereum;')
- self.db.conn.commit()
-
-
- def test_get_key(self):
- self.db.get(self.address_hex, 'foo')
- with self.assertRaises(InvalidToken):
- self.db.get(self.address_hex, 'bar')
-
-
-if __name__ == '__main__':
- unittest.main()
diff --git a/test/test_keystore.py b/test/test_keystore.py
@@ -0,0 +1,57 @@
+#!/usr/bin/python
+
+import unittest
+import logging
+import base64
+
+import psycopg2
+from psycopg2 import sql
+from cryptography.fernet import Fernet, InvalidToken
+
+from keystore import ReferenceKeystore
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+
+class TestDatabase(unittest.TestCase):
+
+ conn = None
+ cur = None
+ symkey = None
+ address_hex = None
+ db = None
+
+ def setUp(self):
+ # arbitrary value
+ symkey_hex = 'E92431CAEE69313A7BE9E443C4ABEED9BF8157E9A13553B4D5D6E7D51B5021D9'
+ self.symkey = bytes.fromhex(symkey_hex)
+ self.address_hex = '9FA61f0E52A5C51b43f0d32404625BC436bb7041'
+
+ kw = {
+ 'symmetric_key': self.symkey,
+ }
+ self.db = ReferenceKeystore('signer_test', **kw)
+ for ss in ReferenceKeystore.schema:
+ self.db.cur.execute(ss)
+ self.db.conn.commit()
+ self.address_hex = self.db.new('foo')
+
+
+ def tearDown(self):
+ self.db.conn = psycopg2.connect('dbname=signer_test')
+ self.db.cur = self.db.conn.cursor()
+ self.db.cur.execute('DROP INDEX ethereum_address_idx;')
+ self.db.cur.execute('DROP TABLE ethereum;')
+ self.db.conn.commit()
+
+
+ def test_get_key(self):
+ logg.debug('getting {}'.format(self.address_hex))
+ self.db.get(self.address_hex, 'foo')
+ with self.assertRaises(InvalidToken):
+ self.db.get(self.address_hex, 'bar')
+
+
+if __name__ == '__main__':
+ unittest.main()
diff --git a/test/test_sign.py b/test/test_sign.py
@@ -6,7 +6,7 @@ import logging
from rlp import encode as rlp_encode
from signer import ReferenceSigner
-from transaction import Transaction
+from transaction import EIP155Transaction
logging.basicConfig(level=logging.DEBUG)
logg = logging.getLogger()
@@ -21,14 +21,20 @@ tx = {
'data': "deadbeef",
}
+class pkGetter:
+
+ def __init__(self, pk):
+ self.pk = pk
+
+ def get(self, address, password=None):
+ return self.pk
+
+
class TestSign(unittest.TestCase):
pk = None
nonce = -1
-
-
- def getPk(self, address):
- return self.pk
+ pk_getter = None
def getNonce(self):
@@ -37,8 +43,8 @@ class TestSign(unittest.TestCase):
def setUp(self):
- #self.pk = b'abcdefghijklmnopqrstuvwxyz012345' #random.sample(range(256), k=32)
self.pk = bytes.fromhex('5087503f0a9cc35b38665955eb830c63f778453dd11b8fa5bd04bc41fd2cc6d6')
+ self.pk_getter = pkGetter(self.pk)
def tearDown(self):
@@ -46,15 +52,20 @@ class TestSign(unittest.TestCase):
+ # TODO: verify rlp tx output
def test_serialize_transaction(self):
- t = Transaction(tx, 0)
+ t = EIP155Transaction(tx, 0)
self.assertRegex(t.__class__.__name__, "Transaction")
- logg.debug('{}'.format(rlp_encode(t.serialize())))
+ s = t.serialize()
+ self.assertEqual('{}'.format(s), "{'nonce': '0x0x0', 'gasPrice': '0x0x4a817c800', 'gas': '0x0x55f0', 'to': '0x3535353535353535353535353535353535353535', 'value': '0x0x3e8', 'data': '0xdeadbeef', 'v': '0x0x1', 'r': '0x', 's': '0x'}")
+ r = t.rlp_serialize()
+ self.assertEqual(r.hex(), 'ea808504a817c8008255f09435353535353535353535353535353535353535358203e884deadbeef018080')
+
def test_sign_transaction(self):
- t = Transaction(tx, 461, 8995)
- s = ReferenceSigner(self.getPk)
+ t = EIP155Transaction(tx, 461, 8995)
+ s = ReferenceSigner(self.pk_getter)
z = s.signTransaction(t)
