HipChat encrypts the messages during the transmission to the AWS server as described here. As far as we know, there isn't any options to change the encryption type used for trasmission or storage.
A good option for you will be to opt in to the HipChat Server beta program where the local admins can store the message data anyway they choose on a local machine. You can sign up for the HipChat Server beta here.
All good things come to an end - thanks to all our customers and partners who have been along the Hipchat and Stride journey with us. As of Feb 15th 2019, Hipchat Cloud and Stride have reached ...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event