CRYPTOMATHIC BLOG

 

key blocks

Cardholder, Merchant, Issuer & Acquirer - The Four Corners Model for Payment Security and Key Management

4 min read

The Four Corners Model for Card Payment Security and Key Management

The “Four Corners” model, also called the “Four Party Scheme”, is utilized in almost all standard card payment systems across the globe. Here, we...

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TR-34 Key Blocks for the TR-34 Exchange Protocol: Basic Principles

4 min read

TR-34 Key Blocks for the TR-34 Exchange Protocol: Basic Principles

Among all the various key block formats, the TR-34 format is undoubtedly one of the most sophisticated. The TR-34 norm is an implementation of the...

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PCI PIN Requirements for Key Blocks in the Payment Card Industry - FAQs

3 min read

Key blocks and PCI PIN requirements: FAQs

This article proposes a few answers to a series of frequently asked questions (FAQs) about key blocks and their use with PCI.

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An Overview of the Different Key Block Formats

2 min read

An Overview of the Different Key Block Formats

A key block is a unique piece of cryptography that is used to protect cryptographic keys while they are being sent over networks that might not be...

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Payment & Banking: An Introduction to z/OS and the IBM Common Cryptographic Architecture

4 min read

An Introduction to z/OS and the IBM Common Cryptographic Architecture

IBM’s mainframe computers have been a rock-steady part of banks’ security infrastructure for many years. Originating from the local data-center...

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Converting Key Blocks from one to another One Format to Another: How It’s Done and in Which Sectors

2 min read

How to Convert Key Blocks

There are several types of key block formats used in different industries, especially the retail banking industry. The systems that use these key...

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ANSI X9.24-1-2017: Key Replacement, Destruction, and Archiving

2 min read

ANSI X9.24-1-2017: Key Replacement, Destruction, and Archiving

One aspect of key management is dealing with what happens when a symmetric cryptographic key is no longer needed. The section ‘Key Replacement,...

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Why a Key Management System Must Understand ANSI X9.24/TR-31 Key Blocks

3 min read

Why Key Management Systems Must Understand ANSI X9.24/TR-31 Key Blocks

The PCI Council requires most actors of payment networks to implement ANSI X9.24/TR-31-compliant key blocks to wrap and securely transmit, transfer,...

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Introduction to Cryptographic Key Blocks - FAQs

2 min read

Introduction to Cryptographic Key Blocks - FAQs

This article proposes answers to a series of frequently asked questions (FAQs) about key blocks.

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