What is the difference between hash functions and encryption?

Can you explain the difference between hash functions and encryption?

Sure! Hash functions are used to convert data into a fixed-size string of characters, which is typically a hash value. This process is one-way, meaning you can't reverse it to get the original data. Encryption, on the other hand, is a two-way process that transforms data into a format that can only be read by someone who has the decryption key.

So, hash functions are not reversible, but encryption is?

Exactly! Hash functions are designed for integrity verification, while encryption is meant for confidentiality. You can think of hashing as a way to ensure data hasn't been altered, while encryption protects data from unauthorized access.

Can you give me an example of where I would use each?

Certainly! You might use a hash function for storing passwords securely, as it allows you to verify the password without storing it. Encryption would be used for sending sensitive information, like credit card numbers, over the internet to keep it safe from eavesdroppers.

Are there any common algorithms for each?

Yes! Common hash functions include SHA-256 and MD5, while popular encryption algorithms include AES and RSA.