Hi All , Would like to understand the usage of HMAC in HSM. From Barbican , we send the request to generate MKEK and HMAC. What is the relation between HMAC, MKEK AND KEK. would need help in understanding HMAC. -- *Thanks and Regards,* *Asha Seshagiri* -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20150721/a554df51/attachment.html>