use python slowaes library

client/upgrade.py

@@ -0,0 +1,34 @@
+import electrum, getpass, base64,ast
+
+wallet = electrum.Wallet(None)
+try:
+    wallet.read()
+    print "ok"
+except BaseException:
+    if wallet.version == 1 and wallet.use_encryption:
+        # version 1 used pycrypto for wallet encryption
+        import Crypto
+        from Crypto.Cipher import AES
+        BLOCK_SIZE = 32
+        PADDING = '{'
+        pad = lambda s: s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * PADDING
+        EncodeAES = lambda secret, s: base64.b64encode(AES.new(secret).encrypt(pad(s)))
+        DecodeAES = lambda secret, e: AES.new(secret).decrypt(base64.b64decode(e)).rstrip(PADDING)
+
+        print "encrypted seed", wallet.seed
+        print "please provide your password"
+        password = getpass.getpass("Password:")
+        secret = electrum.Hash(password)
+        try:
+            seed = DecodeAES( secret, wallet.seed )
+            private_keys = ast.literal_eval( DecodeAES( secret, wallet.private_keys ) )
+        except:
+            print "sorry"
+            exit(1)
+        print seed
+        print private_keys
+        wallet.version = 2
+        wallet.seed = wallet.pw_encode( seed, password)
+        wallet.private_keys = wallet.pw_encode( repr( private_keys ), password)
+        wallet.save()
+        print "wallet was upgraded"