Starting in January 2018, organizations that use cryptogram-based encryption methods to protect their symmetric keys began transferring to a key block-based encryption method. This change reflects the update made to PCI PIN guidelines to better protect cryptographic keys from unintended use. Of the various methods available, the TR-31 key block format is the most popular.
The TR-31 key blocks stored in SWITCHWARE 4.0 (and above) work well with all existing RKL transport methods in place today.
In the near future TR-31/34 support for RKL with SWITCHWARE-driven ATMs is planned to be offered using a single SWITCHWARE interface to Trusted Security Solution’s A98 system.