symmetric key encryption

Symmetric key encryption is a method of securing data by using the same secret key to both lock (encrypt) and unlock (decrypt) the information. Think of it like a password or a key to a safe: if you share the key with someone trusted, both of you can access the protected contents. It’s fast and efficient for large amounts of data, but the challenge is securely sharing the key since anyone with the key can access the information. This method is widely used for securing communications, files, and online transactions.