Why do cryptocurrencies use hash-based puzzles to demonstrate proof-of-work? Why not some more intrinsically useful problem?

Exploring the elliptic curve used in Monero for digital signatures. Making explicit some things that are often left implicit.

The elliptic curves Ed25519 and Curve25519 are both used in cryptography, and are equivalent in one sense and not in another.

Several elliptic curves which Zcash uses in zero knowledge proofs are named after characters from Lewis Carroll: Jubjub, Bandersnatch, Tweddledee, Tweedledum

Can Bitcoin really prevent fraud without a central authority? In this video, we break down the core mechanisms that make Bitcoin uncheatable—from blockchain immutability to Proof of Work and cryptographic signatures. Discover how Bitcoin enforces honesty…

Looking back at the article that popularized public key cryptography, Martin Gardner's article on RSA from September 1977.

In this video, we uncover the hidden layers of cryptography, ownership, and digital identity embedded in every Bitcoin address. From private keys to Taproot, discover how a simple string of characters unlocks the freedom, privacy, and power of decentralized…

Plotting the points on an elliptic curve over a finite field can be very misleading.

The race to secure our data against quantum computers is on. Learn how PQC is leading the charge.

As AI agents become more autonomous, data integrity is key. How can we ensure security for machine-to-machine interactions?

Purism makes premium phones, laptops, mini PCs and servers running free software on PureOS. Purism products respect people's privacy and freedom while protecting their security.

Web3's evolution: From privacy dreams to blockchain's financial reality. How does cryptography fit in?

Purism makes premium phones, laptops, mini PCs and servers running free software on PureOS. Purism products respect people's privacy and freedom while protecting their security.