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.
Performs a transformation on data, keeping the data from being read by third parties. This type of encryption uses a single, shared-secret key to encrypt and decrypt data. Public-key encryption (asymmetric cryptography). Performs a transformation on data, keeping the data from being read by third parties.o use public-key cryptography to digitally sign a message, A first applies a hash algorithm to the message to create a message digest. The message digest is a compact and unique representation of data.