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5 articles in PCI DSS Compliance Teams · Cryptography Fundamentals · Clear filtersSort byNewest·Trending

CCA-Secure FHE Isn't a Payment Incident, Yet

Cryptography Fundamentals

Latest

4 min read

CCA-Secure FHE Isn't a Payment Incident, Yet

What Happened A research team has developed a fully homomorphic encryption (FHE) scheme with chosen-ciphertext attack (CCA) security, based solely on the learning with errors (LWE) assumption in the s

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Your Expired Card Is Safer Than Your Active One

Cryptography Fundamentals

4 min read

Your Expired Card Is Safer Than Your Active One

Many believe that once a payment card expires, it s useless. Chip-and-PIN technology and cryptographic validation supposedly render an expired card incapable of completing transactions. So, why bother

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Should You Encrypt Once or Let N Parties Decrypt?

Cryptography Fundamentals

3 min read

Should You Encrypt Once or Let N Parties Decrypt?

Your compliance team manages cardholder data across multiple processors, each needing access under different conditions. Traditional encryption forces a choice: encrypt separately for each party (lead

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Cryptographic Hygiene Failures That Break Payment Security

Cryptography Fundamentals

6 min read

Cryptographic Hygiene Failures That Break Payment Security

Are you still using the same encryption algorithms you chose five years ago? Your compliance documentation might list approved cryptographic standards, and your quarterly reviews confirm you re still

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Cryptographic Primitive Selection for PCI DSS Compliance

Cryptography Fundamentals

5 min read

Cryptographic Primitive Selection for PCI DSS Compliance

When your team selects a cryptographic primitive to protect cardholder data, you re choosing from a family of related constructions that share fundamental security properties. Understanding these rela

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