What is Secret Key?

July 18, 2022

A secret key (also known as a private key) is a piece of information (a password or phrase) or a parameter used to encrypt or decrypt messages in symmetric and asymmetric encryption.

Symmetric and asymmetric encryption differ in that the former uses only the secret key, while the latter uses the secret key and a second one called the public key.

Anastazija is an experienced content writer with knowledge and passion for cloud computing, information technology, and online security. At phoenixNAP, she focuses on answering burning questions about ensuring data robustness and security for all participants in the digital landscape.