The Root Of TrustBlog
Payments and security, explained the way you'd explain it to a smart friend over coffee. HSMs, keys, PINs, PCI, and what's coming next.
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ECC, explained without the math
Smaller keys, same strength. How elliptic curves sign and agree on secrets, where they run in payments, and a quick guide to the curves you'll meet.
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RSA, explained without the math
Two keys, one mailbox, and the three jobs RSA quietly does in payments. Plus why quantum computers hit key transport harder than signatures.
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Encryption modes, ranked, and why payments care
ECB, CBC, CTR, GCM and friends in plain English, plus where they quietly show up in PIN blocks, key check values, TR-31 and DUKPT.