Hash Functions
Discover the fundamental concept of hash functions in blockchain cryptography. Learn how cryptographic hash functions ensure data integrity and security by producing unique digital fingerprints, explore key properties like determinism and collision resistance, and see how Ethereum uses the keccak256 hash function. This lesson helps you grasp the critical role hash functions play in protecting blockchain data.
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Our journey starts with cryptography. It starts here because cryptography is a critical component of blockchain technology—it is used to secure the data stored on the blockchain. Without cryptography, the data in the blockchain would be vulnerable to attack.
Before understanding how encryption and digital signatures work, we need to understand hash functions. They are a fundamental part of modern cryptography used in almost all cryptographic systems. As the famous cryptographer
Functions
In computing, a function is a process or relation that produces a specific output for a given input. Functions are written in a programming language because this is how machines understand them. A ...