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Short, plain-language pieces on number theory, cryptography, and the mathematics behind the tools we all rely on. Written for the curious reader, no prior background assumed.

Educational Number theory in the world Independent · Addis Ababa
Cryptography & Number Theory · June 2026

What Post-Quantum Cryptography Means

In June 2026 the United States set legal deadlines to replace the encryption that protects nearly all digital communication. The reason is a piece of number theory. A plain-language explainer of the quantum threat, "harvest now, decrypt later," the new US mandate, and the standards replacing RSA and ECC. Read →

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