def grant(hostname, user, account_name, verbose=False):
'''
Grant access to some credentials
'''
inv = Inventory.get(hostname=hostname, account_name=account_name)
ar = AccessRights.create(created_by=user.identifier,
user=user.identifier, host=inv.identifier)
plaintext = crypt.rsa_dec(user, inv.account_password, verbose)
cipher = crypt.rsa_enc(user, plaintext)
Credentials.create(access=ar.identifier, password=cipher)
