src/helper_bitcoin.py

@@ -3,7 +3,7 @@ Calculates bitcoin and testnet address from pubkey
 """
 
 import hashlib
-
+from fallback import RIPEMD160Hash
 from debug import logger
 from pyelliptic import arithmetic
 
@@ -15,21 +15,20 @@ def calculateBitcoinAddressFromPubkey(pubkey):
                      ' function was passed a pubkey that was'
                      ' %i bytes long rather than 65.', len(pubkey))
         return "error"
-    ripe = hashlib.new('ripemd160')
     sha = hashlib.new('sha256')
     sha.update(pubkey)
-    ripe.update(sha.digest())
+    ripe = RIPEMD160Hash(sha.digest())
-    ripeWithProdnetPrefix = '\x00' + ripe.digest()
+    ripeWithProdnetPrefix = b'\x00' + ripe.digest()
 
     checksum = hashlib.sha256(hashlib.sha256(
         ripeWithProdnetPrefix).digest()).digest()[:4]
     binaryBitcoinAddress = ripeWithProdnetPrefix + checksum
     numberOfZeroBytesOnBinaryBitcoinAddress = 0
-    while binaryBitcoinAddress[0] == '\x00':
+    while binaryBitcoinAddress.startswith(b'\x00'):
         numberOfZeroBytesOnBinaryBitcoinAddress += 1
         binaryBitcoinAddress = binaryBitcoinAddress[1:]
     base58encoded = arithmetic.changebase(binaryBitcoinAddress, 256, 58)
-    return "1" * numberOfZeroBytesOnBinaryBitcoinAddress + base58encoded
+    return b"1" * numberOfZeroBytesOnBinaryBitcoinAddress + base58encoded
 
 
 def calculateTestnetAddressFromPubkey(pubkey):
@@ -39,18 +38,17 @@ def calculateTestnetAddressFromPubkey(pubkey):
                      ' function was passed a pubkey that was'
                      ' %i bytes long rather than 65.', len(pubkey))
         return "error"
-    ripe = hashlib.new('ripemd160')
     sha = hashlib.new('sha256')
     sha.update(pubkey)
-    ripe.update(sha.digest())
+    ripe = RIPEMD160Hash(sha.digest())
-    ripeWithProdnetPrefix = '\x6F' + ripe.digest()
+    ripeWithProdnetPrefix = b'\x6F' + ripe.digest()
 
     checksum = hashlib.sha256(hashlib.sha256(
         ripeWithProdnetPrefix).digest()).digest()[:4]
     binaryBitcoinAddress = ripeWithProdnetPrefix + checksum
     numberOfZeroBytesOnBinaryBitcoinAddress = 0
-    while binaryBitcoinAddress[0] == '\x00':
+    while binaryBitcoinAddress.startswith(b'\x00'):
         numberOfZeroBytesOnBinaryBitcoinAddress += 1
         binaryBitcoinAddress = binaryBitcoinAddress[1:]
     base58encoded = arithmetic.changebase(binaryBitcoinAddress, 256, 58)
-    return "1" * numberOfZeroBytesOnBinaryBitcoinAddress + base58encoded
+    return b"1" * numberOfZeroBytesOnBinaryBitcoinAddress + base58encoded

src/tests/test_helper_bitcoin.py

@@ -0,0 +1,26 @@
+"""Test for helperbitcoin"""
+import unittest
+from pybitmessage.helper_bitcoin import (
+    calculateBitcoinAddressFromPubkey,
+    calculateTestnetAddressFromPubkey
+)
+from .samples import sample_pubsigningkey
+
+PUB_SIGNING_KEY = sample_pubsigningkey
+# CORRESPONDING BITCONADDRESS AND TESTNET ADDRESS
+BITCOINADDRESS = b'1CJQzhGb1Lh4DwDoxbTSZbTkSq2zJ7LAK7'
+TESTNETADDRESS = b'mrpNHkMZpN8K13hRgARpPWg5JpdhDVUVGA'
+
+
+class TestHelperBitcoin(unittest.TestCase):
+    """Test class for ObjectProcessor"""
+
+    def test_calculateBitcoinAddressFromPubkey(self):
+        """Test calculateBitcoinAddressFromPubkey"""
+        bitcoinAddress = calculateBitcoinAddressFromPubkey(PUB_SIGNING_KEY)
+        self.assertEqual(bitcoinAddress, BITCOINADDRESS)
+
+    def test_calculateTestnetAddressFromPubkey(self):
+        """Test calculateTestnetAddressFromPubkey"""
+        testnetAddress = calculateTestnetAddressFromPubkey(PUB_SIGNING_KEY)
+        self.assertEqual(testnetAddress, TESTNETADDRESS)