Table 5. Cisco Aironet 1140 Series Power Injector Product Numbers Product Number Product Description AIR-PWRINJ4= Cisco Aironet Power Injector for the 1140 Series (Spare) Power Supply A Cisco Aironet power supply is not included with the Cisco Aironet 1140 Series and may be purchased separately (Table 6). The AIR-PWR-B is the recommended power supply for the 1140 Series.
public-key encryption. Related Terms. A cryptographic system that uses two keys -- a public key known to everyone and a private or secret key known only to the recipient of the message. When John wants to send a secure message to Jane, he uses Jane's public key to encrypt the message. Jane then uses her private key to decryptit.
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).