X9 TR-31-2018
Interoperable Secure Key Exchange Key Block Specification
standard by Accredited Standards Committee X9 Incorporated, 04/15/2018
Full Description
X9 TR-31-2018 describes a method consistent with the requirements of ANS X9.24 Retail Financial Services Symmetric Key Management Part 1 for the secure exchange of keys and other sensitive data between two devices that share a symmetric key exchange key. This method may also be used for the storage of keys under a symmetric key.
This document is not a security standard and is not intended to establish security requirements. It is intended instead to provide an interoperable method of implementing security requirements and policies.