noun
public key cryptosystem
Technical computing term for a cryptographic system that uses a pair of keys: a public key for encryption and a private key for decryption.
公開鍵暗号方式は、インターネット上の安全な通信に広く使われている。
Public key cryptosystems are widely used for secure communication on the internet.
共通鍵暗号方式 (symmetric-key cryptosystem) uses the same key for encryption and decryption, whereas 公開鍵暗号方式 uses separate public and private keys.
Compound of 公開鍵 (public key), 暗号 (cipher), and 方式 (system/method). The term is a direct calque from English 'public key cryptosystem'.