SHA

SHA (Secure Hash Algorithm) is a cryptographic function that converts data like a message or file into a fixed-length string of characters, called a hash. This process is one-way, meaning you can't reverse it to get the original data. It's used to verify data integrity—if the data changes, the hash will change. SHA is commonly employed in digital signatures, password security, and data verification, ensuring that information remains unaltered and authentic during transmission or storage.