What is Symmetric algorithm?

Understanding Symmetric algorithm

Operate with a single cryptographic key that is used for both encryption and decryption of the message. Symmetric encryption algorithms use the same key for both encryption and decryption operations. These algorithms are typically faster and more efficient than asymmetric encryption but face key distribution challenges since both sender and receiver must securely share the secret key. Common symmetric algorithms include AES 3DES and ChaCha20. Symmetric algorithms are defined in standards like FIPS 197 AES NIST SP 800-38 series and various cryptographic publications. Organizations implement symmetric encryption for bulk data protection following key management best practices for secure key generation distribution storage and rotation. For example a cloud storage provider might use AES-256 symmetric encryption to protect customer data at rest implementing a secure key management system that protects encryption keys enforces access controls and enables key rotation without data reencryption. Related terms Cryptography Secret key Block cipher Stream cipher Key management AES Encryption Cryptographic key.