A breakdown of what type of risks quantum computing poses to Bitcoin, and how worried users of the network should be. In the early 2020s, quantum computing hit the public spotlight as a potential ...

An algorithm that transforms a given amount of data (the "message") into a fixed number of digits, known as the "hash," "digest" or "digital fingerprint." Hash functions are a fundamental component in ...

I’m going to talk about the security behind Bitcoin addresses and keys, called Public Key Cryptography. This includes SHA256, Random Number Generators(RNGs), Hash Functions, and Elliptic Curve Digital ...

Passwords are the keys to our online identities, and as a result, they’re also near the top of the target list for attackers. There have been countless breaches in the last few years in which ...

Quantum computing is on the horizon, promising to solve complex problems beyond the capabilities of classical computers. But for Bitcoin and other cryptocurrencies, which rely on today’s cryptographic ...

Hashing is a one-way cryptographic function while encryption is designed to work both ways. Encryption algorithms take input and a secret key and generate a random looking output called a ciphertext.

When Bitcoin launched in 2009, it was not merely a new online currency: it was a new model of finance. As a system of electronic money with no central government in charge but rather relying on ...

Buterin has outlined a phased roadmap to replace four vulnerable components of Ethereum's cryptographic architecture.

Proof-of-work (PoW), or Nakamoto consensus, is a decentralized consensus mechanism that secures a blockchain by requiring nodes to expend energy and compete against each other to solve complex ...

In this chapter we will look at choosing and optimizing cryptographic algorithms, particularly for resource-constrained systems, such as embedded systems. We will look at various strategies for ...