changes for new toolchain

lib/bitcoin.py

@@ -26,6 +26,7 @@
 
 import hashlib
 import base64
+import os
 import re
 import hmac
 
@@ -208,9 +209,11 @@ def i2o_ECPublicKey(pubkey, compressed=False):
 ############ functions from pywallet #####################
 
 def hash_160(public_key):
-    #md = hashlib.new('ripemd')
-    from Crypto.Hash import RIPEMD
-    md = RIPEMD.new()
+    if 'ANDROID_DATA' in os.environ:
+        from Crypto.Hash import RIPEMD
+        md = RIPEMD.new()
+    else:
+        md = hashlib.new('ripemd')
     md.update(sha256(public_key))
     return md.digest()