About Lesson
Introduction to Hashing
Hashing is a cryptographic technique used to ensure data integrity and security by transforming input data of any size into a fixed-length string, known as a hash or digest. Unlike encryption, hashing is a one-way process, meaning the original input cannot be reconstructed from the hash. This unique property makes hashing ideal for verifying data integrity, storing passwords securely, and creating digital signatures.
Hash functions play a fundamental role in modern cryptographic systems, underpinning applications like blockchain technology, digital certificates, and secure authentication systems.