URI: 
       tfix issue #2064 - electrum - Electrum Bitcoin wallet
  HTML git clone https://git.parazyd.org/electrum
   DIR Log
   DIR Files
   DIR Refs
   DIR Submodules
       ---
   DIR commit cda0d14a133ea13bab745ef2fed0d22ee8fca485
   DIR parent a660590a70cacd86e785a7f307ad141bc78b6406
  HTML Author: ThomasV <thomasv@electrum.org>
       Date:   Wed, 21 Dec 2016 13:30:35 +0100
       
       fix issue #2064
       
       Diffstat:
         M gui/qt/main_window.py               |      29 ++++++++++++++++++++++-------
         M lib/bitcoin.py                      |       9 +++++++++
       
       2 files changed, 31 insertions(+), 7 deletions(-)
       ---
   DIR diff --git a/gui/qt/main_window.py b/gui/qt/main_window.py
       t@@ -52,7 +52,7 @@ from electrum.util import (block_explorer, block_explorer_info, format_time,
        from electrum import Transaction, mnemonic
        from electrum import util, bitcoin, commands, coinchooser
        from electrum import SimpleConfig, paymentrequest
       -from electrum.wallet import Wallet, Multisig_Wallet
       +from electrum.wallet import Wallet, Multisig_Wallet, P2PK_Wallet
        
        from amountedit import BTCAmountEdit, MyLineEdit, BTCkBEdit
        from network_dialog import NetworkDialog
       t@@ -1758,20 +1758,35 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
        
            @protected
            def do_sign(self, address, message, signature, password):
       -        message = unicode(message.toPlainText()).encode('utf-8')
       -        task = partial(self.wallet.sign_message, str(address.text()),
       -                       message, password)
       +        address  = str(address.text()).strip()
       +        message = unicode(message.toPlainText()).encode('utf-8').strip()
       +        if not bitcoin.is_address(address):
       +            self.show_message('Invalid Bitcoin address.')
       +            return
       +        if not bitcoin.is_p2pkh(address):
       +            self.show_message('Cannot sign messages with this type of address.')
       +            return
       +        if not wallet.is_mine(address):
       +            self.show_message('Address not in wallet.')
       +            return
       +        task = partial(self.wallet.sign_message, address, message, password)
                def show_signed_message(sig):
                    signature.setText(base64.b64encode(sig))
                self.wallet.thread.add(task, on_success=show_signed_message)
        
            def do_verify(self, address, message, signature):
       -        message = unicode(message.toPlainText())
       -        message = message.encode('utf-8')
       +        address  = str(address.text()).strip()
       +        message = unicode(message.toPlainText()).encode('utf-8').strip()
       +        if not bitcoin.is_address(address):
       +            self.show_message('Invalid Bitcoin address.')
       +            return
       +        if not bitcoin.is_p2pkh(address):
       +            self.show_message('Cannot verify messages with this type of address.')
       +            return
                try:
                    # This can throw on invalid base64
                    sig = base64.b64decode(str(signature.toPlainText()))
       -            verified = bitcoin.verify_message(address.text(), sig, message)
       +            verified = bitcoin.verify_message(address, sig, message)
                except:
                    verified = False
                if verified:
   DIR diff --git a/lib/bitcoin.py b/lib/bitcoin.py
       t@@ -384,6 +384,15 @@ def is_address(addr):
                return False
            return addr == hash_160_to_bc_address(h, addrtype)
        
       +def is_p2pkh(addr):
       +    if is_address(addr):
       +        addrtype, h = bc_address_to_hash_160(addr)
       +        return addrtype in [0]
       +
       +def is_p2sh(addr):
       +    if is_address(addr):
       +        addrtype, h = bc_address_to_hash_160(addr)
       +        return addrtype in [5]
        
        def is_private_key(key):
            try: