对称加密算法 (duìchèn jiāmiào suànfǎ): Symmetric encryption algorithm uses the same key for both encryption and decryption processes.
公钥加密算法 (gōngyào jiāmiào suànfǎ): Public key encryption algorithm uses a pair of keys, one for encryption and another for decryption, providing a more secure method of communication.
数字签名 (shùzì qiānmíng): Digital signature is a cryptographic technique that verifies the authenticity and integrity of digital messages or documents.