What does public-key cryptosystem mean?
<answer> It is an encryption technique that uses a paired public and private key algorithm for secure data communication. <context> Definition - What does Public Key Cryptography (PKC) mean? Public key cryptography (PKC) is an encryption technique that uses a paired public and private key (or asymmetric key) algorithm for secure data communication. A message sender uses a recipient's public key to encrypt a message. To decrypt the sender's message, only the recipient's private key may be used. The two types of PKC algorithms are RSA, which is an acronym related to this algorithm's inventors: Rivest, Shamir and Adelman and Digital Signature Algorithm (DSA).