One of two keys used in public key cryptography, made publicly available by the recipient of encrypted data and typically used to encrypt data and to verify digital signatures.
(plural public keys)
The public one of the two keys used in asymmetric cryptography.
public key - Computer Definition
Public key cryptography uses two mathematical keys that are
related. A message encrypted by one key
can only be decrypted by the other related key. This notion contrasts with
traditional cryptography, now
called symmetric cryptography, which uses the same key for encryption as for decryption.