4 min read
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...
3 min read
Martin Rupp (guest): 26. January 2023
EMV Personalization is a process used to get card data into cards, mobile phones, and wearables. The process includes a variety of complicated...
5 min read
Martin Rupp (guest): 20. December 2022
To bank safely online, you need additional mobile app security mechanisms that go beyond standard OS security features. In this article, we take an...
3 min read
Martin Rupp (guest): 02. December 2022
As the use of mobile phones for mobile banking and payment applications increases, so too do the security threats. Most smartphones use only two...
4 min read
Martin Rupp (guest): 01. December 2022
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...
3 min read
Martin Rupp (guest): 05. November 2022
This article proposes a few answers to a series of frequently asked questions (FAQs) about key blocks and their use with PCI.
4 min read
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...
3 min read
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...
3 min read
Martin Rupp (guest): 20. September 2022
The EMV personalization data processing in itself is not the topic of this article, we will instead focus on the cryptographic schemes involved in...