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Cryptographic Key Distribution Method Disclosure Number: IPCOM000061209D
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09

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Jones, MF Lennon, RE [+details]


The method described in this article for initializing a cryptographic system via manual key distribution and entry takes advantage of diskette facilities and other system functions which already exist, to eliminate a human interface to enter a cryptographic key. Also described is an extension of the method for ultimately submitting encrypted keys (rather than clear keys) to the key generator in a host system remote from the site of initial entry of the key. Before encrypted data or transmissions may be exchanged between two parties using a symmetric cryptographic algorithm such as the Data Encryption Algorithm (DEA), at least one unique cryptographic key must be known to both of them. One of the fundamental difficulties in this situation is the exchange of that initial key.