Cryptography Questions
A hash function is a mathematical function that takes an input (or message) and produces a fixed-size string of characters, which is typically a sequence of numbers and letters. The output, known as the hash value or hash code, is unique to the input data, meaning that even a small change in the input will result in a significantly different hash value. Hash functions are commonly used in cryptography to ensure data integrity, as they can verify if the original data has been altered or tampered with.