Classic Asymmetric Algorithms Intermediate
Diffie-Hellman Key Exchange
Diffie-Hellman solved cryptography's oldest problem: sharing a secret over a channel anyone can watch. Here's the math, and how it still secures the web.
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Classic Asymmetric Algorithms
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Classic Asymmetric Algorithms Intermediate
The DSA (Digital Signature Algorithm)
DSA was the U.S. government's answer to a simple question: how do you prove a message came from you, without RSA's patent? Learn how the Digital Signature Algorithm works, and why a single reused number sank Sony's PS3 security.
Classic Asymmetric Algorithms Advanced
The Paillier Cryptosystem
What if you could add two numbers together without ever decrypting them? Paillier encryption makes that possible. It's the mathematical trick behind private vote tallying and secure multi-party computation.
Classic Asymmetric Algorithms Intermediate
RSA
RSA made public-key cryptography practical for the world. Here's how it works, why it's secure, and where it's headed as quantum computing looms.
Classic Asymmetric Algorithms Intermediate
Schnorr Signatures
Schnorr signatures are what DSA might have been if a 20-year patent hadn't gotten in the way. Simpler, provably secure, and now at the heart of Bitcoin's Taproot upgrade: here's how they work.