def getUser(self, username):
""" Get public key of user
Returns publickey
"""
key = Isis.getUserKey(username)
if key:
return key
else:
return False
def checkSignature(username, signature, data):
publickey = Isis.getUserKey(username)
instance = RSA.importKey(publickey)
hash = SHA.new(data).digest()
return instance.verify(hash, (bytes_to_long(signature),))
