payShield Trusted Management Device
payShield TMD offers secure, flexible and efficient key management for payment HSMs. It is a compact, intuitive, self-contained secure cryptographic device (SCD) that enables you to perform symmetric key management tasks including securely forming keys from separate components or splitting existing keys retrospectively into new components. payShield TMD generates and shares keys in a manner that is compliant with relevant security standards, including X9 TR-31, ANSI X9.24-1 and PCI PIN Security.
Unlike traditional approaches, these critical key management tasks can be carried out without any physical connection to a production HSM, providing greater operational flexibility without compromising security. For example, a single payShield TMD can form keys for multiple payment HSMs distributed across multiple data centres, enabling large payment processors to create and distribute thousands of Key Encrypting Keys (KEKs) or Zone Master Keys (ZMKs) in a timely and secure manner while eliminating data entry errors.
Each payShield TMD shares one or more Master ZMKs (MZMKs) with the HSMs to facilitate secure exchange of key material. payShield TMD does not require access to the Local Master Keys (LMKs) used by the production HSMs. Keys exchanged between a payShield TMD and an HSM are encrypted under the appropriate MZMK.