What Is a Symmetric Encryption Algorithm?
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Symmetric encryption algorithms, also known as secret key algorithms, are used to encrypt and decrypt data using a single key. Generally, symmetric encryption algorithms are computationally faster than asymmetric encryption algorithms and can offer higher levels of security when implemented correctly. The most commonly used symmetric encryption algorithms are the Advanced Encryption Standard (AES), Data Encryption Standard (DES), and Triple–DES.
A symmetric encryption algorithm is a type of encryption that uses the same key to both encrypt and decrypt a message. It is also known as a secret key algorithm or a private key algorithm. Symmetric encryption algorithms are used to protect the confidentiality of data, for example to securely store passwords, credit card numbers, and other sensitive information.