Fix right pad hash check.

contracts/test/TestSolidityAddressHash.sol

@@ -0,0 +1,21 @@
+
+
+/**
+ * Test address hash behavior with left and right padded zeroes.
+ */
+contract TestSolidityAddressHash {
+
+  address public leftPad = 0x00b5557397B157a17fb1AbCa97a38e4646BEDb88;
+  address public rightPad = 0x88b5557397B157a17fb1AbCa97a38e4646BEDb00;
+
+  function getHashLeftPad() public constant returns (bytes32) {
+    bytes32 hash = sha256(leftPad);
+    return hash;
+  }
+
+  function getHashRightPad() public constant returns (bytes32) {
+    bytes32 hash = sha256(rightPad);
+    return hash;
+  }
+
+}

ico/tests/contracts/test_require_signed_address.py

@@ -2,7 +2,10 @@
 
 import uuid
 
+import binascii
+import bitcoin
 import pytest
+from eth_utils import force_bytes
 from ethereum.tester import TransactionFailed
 from eth_utils import to_wei
 
@@ -45,6 +48,13 @@ def customer_id(uncapped_flatprice, uncapped_flatprice_finalizer, team_multisig)
     return customer_id
 
 
+@pytest.fixture
+def pad_contract(chain):
+    """Token contract we are buying."""
+    contract, hash = chain.provider.deploy_contract('TestSolidityAddressHash')
+    return contract
+
+
 def test_only_owner_change_change_policy(crowdsale, customer, signer_address):
     """Only owner change change customerId required policy."""
 
@@ -90,3 +100,22 @@ def test_participate_bad_signature(chain, crowdsale, customer, customer_id, toke
     with pytest.raises(TransactionFailed):
         crowdsale.transact({"from": customer, "value": wei_value}).buyWithSignedAddress(customer_id, sign_data["v"], sign_data["r_bytes"], sign_data["s_bytes"])
 
+
+def test_left_pad(pad_contract):
+    """Ensure we handle leading zero in the address correctly."""
+
+    address_bytes = get_address_as_bytes(pad_contract.call().leftPad())
+    hash = bitcoin.bin_sha256(address_bytes)
+    val = pad_contract.call().getHashLeftPad()
+    val = force_bytes(val)
+    assert hash == val
+
+
+def test_right_pad(pad_contract):
+    """Ensure we handle trailing zero in the address correctly."""
+
+    address_bytes = get_address_as_bytes(pad_contract.call().rightPad())
+    hash = bitcoin.bin_sha256(address_bytes)
+    val = pad_contract.call().getHashRightPad()
+    val = force_bytes(val)
+    assert hash == val