The PIN Security Requirement 18-3 Key Blocks Information Supplement provides a series of FAQs to help PIN acquiring entities with implementation of key blocks in accordance with requirement 18-3 in the PCI PIN Security Requirements v3.1.
The updated supplement incorporates the revised effective dates for key block implementations that were previously announced in July 2020 and incorporated into PCI PIN Security Requirements 3.1. The revision of these dates was in response to stakeholder feedback about the impact COVID-19 had on implementation efforts. Details can be found in this bulletin: Revisions to the Implementation Date for PCI PIN Security Requirement 18-3
Additionally, to align with nomenclature outlined by the American National Standards Institute (ANSI), the Council has published a revision to the information supplement which updates all references for TR-31 to X9.143.
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