symmetric key algorithms

Symmetric key algorithms are a type of encryption where the same secret key is used to both lock (encrypt) and unlock (decrypt) information. Think of it like a safe with a single key — anyone with that key can access the contents. These algorithms are efficient for securing large amounts of data and are used in many applications, such as securing emails or files. The main challenge is securely sharing the key between parties, since anyone with the key can access the information. Examples include AES (Advanced Encryption Standard) and DES (Data Encryption Standard).