Compatibility with pyOpenSSL >= 0.14

slapos/libnetworkcache.py

@@ -308,6 +308,7 @@ class NetworkcacheClient(object):
     """
     if signature_string:
       signature = signature_string.decode('base64')
+      content = str(content)
       for certificate in self.signature_certificate_list:
         try:
           crypto.verify(certificate, signature, content, 'sha1')