key translation center

A type of key center that implements a key-distribution protocol (based on symmetric cryptography) to convey keys between two (or more) parties who wish to communicate securely. (Compare: key distribution center.)

Tutorial: A key translation center transfers keys for future communication between Bob and Alice, who (a) wish to communicate with each other but do not currently share keys, (b) each share a KEK with the center, and (c) have the ability to generate or acquire keys by themselves. Alice generates or acquires a set of keys for communication with Bob. Alice encrypts the set in the KEK she shares with the center and sends the encrypted set to the center. The center decrypts the set, reencrypts the set in the KEK it shares with Bob, and either (a) sends that reencrypted set to Alice for her to forward to Bob or (b) sends it directly to Bob (although direct distribution is not supported in the ANSI standard [A9017]).