- [[CRC32]] - [[MD5]] - [[SHA-1]] - [[SHA-256]] - one way mathematical function - converts object data into some representative integer value that can't be reversed or decoded https://www.freecodecamp.org/news/what-is-hashing/ https://www.crowdstrike.com/en-us/cybersecurity-101/data-protection/data-hashing/ https://bytebytego.com/ https://stackoverflow.com/questions/16393650/hash-functions-which-are-used-and-more-popular