What is a HSM and how does it work for PTX? Cloud Payments Expert March 21, 2019 11:44 Updated Follow If you are interested in using a HSM with PTX, please see the related article: HSM Requirements HSMinfoPDF.pdf 300 KB Download Related articles What are the HSM requirements for PTX? How do I find out what the difference is between a Direct and an Indirect submitter? How do I manually install the Gemalto Certificates? How do I migrate the Encryption and Drive service? How do I check if I am SHA2 Compliant?