Sorry, you need to enable JavaScript to visit this website.


Your feedback is important to keep improving our website and offer you a more reliable experience.


The OpenAttestation (OAT) project was created to provide a software development kit (SDK) for the development of cloud management tools. These tools are capable of establishing hosts' integrity information by remotely retrieving and verifying the hosts' integrity with Trusted Platform Module (TPM) quotes.

OpenAttestation v2.1

BY Gang Wei ON Jan 05, 2014

OpenAttestation v2.1 was released December 31, 2013.

The new features in OAT 2.1 are:

  • Support XenServer* specific Trust Agent
  • Support EK Certificate stored in the file
  • Consolidated TPM access code in NIARL module
  • EC signing on PCA
  • Both 20-character and 40-hex-digit owner password can be used for client provisioning
  • Both hostname and IP address can be used to pollhost

For how to get the source, build, and deploy it, refer to:

For existing issues and possible workarounds, refer to: