CRYPTOMATHIC BLOG

 

4 Corners Model

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

4 min read

The Four Corners Model for Payment Security & Key Management

Picture of Martin Rupp (guest) Martin Rupp (guest): 10. February 2023

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

EMV PCI DSS ANSI X9.24 key blocks Payment Security 4 Corners Model
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4 min read

EMV Payment Security - Acquirers

Picture of Martin Rupp (guest) Martin Rupp (guest): 19. October 2022

In the “four corner model”, acquirers are apparently the less active party as their role seems ‘only’ to forward the transaction flow originating...

EMV PCI DSS Payment Security 4 Corners Model
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3 min read

How EMV Payment Security Works for Issuers

Picture of Martin Rupp (guest) Martin Rupp (guest): 22. September 2022

An issuer is one of the corners in the ‘four corner’ model. An issuer is a financial organization (e.g. a bank) that produces payment cards and...

EMV Key Management PCI DSS HSM ANSI X9.24 Payment Security 4 Corners Model
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Payment Security - Cardholders

4 min read

EMV Payment Security for Cardholders: Overview & Practices

Picture of Martin Rupp (guest) Martin Rupp (guest): 16. June 2022

Cardholders (or consumers) are one of the corners of the ‘four corner’ model in the payment card world. Here we take a brief look at the payment...

EMV PCI DSS ANSI X9.24 Payment Security 4 Corners Model
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