Proposal for identity-based key distribution systems

Key distribution systems based on identification information are presented. The systems are analogous to the Diffie-Hellman public key distribution systems in which the former use each user's identification information instead of public files used in the latter. The systems do not require centres to distribute work keys or users to keep directories of key-encrypting keys. Therefore, key management in cryptosystems can be simplified by the identity-based key distribution systems.