#XXX encryption is the core technology for ensuring information security. It transforms raw data into gibberish through algorithms, and only authorized users can decrypt it.

Symmetric encryption such as AES uses the same key for both encryption and decryption, which is fast but carries risks in key transmission; asymmetric encryption like RSA uses a public key for encryption and a private key for decryption, which is more secure but slower.

Today, encryption permeates our lives: payment passwords, communication encryption, file protection, etc. With the development of quantum computing, quantum-resistant encryption has become a new direction to safeguard the security boundaries of the digital world.