ONE-TIME-PAD ENCRYPTION WITH CENTRAL KEY SERVICE

摘要

A one-time-pad encryption system where encrypted one-time-pad keys can be distributed to users on physical media or on a computer network from a central server. Each one-time-pad key has a key identification number that facilitates key management. Each encrypted data set includes a header specifying an offset within the one-time-pad key for commencement of decryption so that messages can be decrypted in any order. Before encryption begins, the length of remaining unused key is compared to the length of the data set to be encrypted. Encryption control buttons are added to a word processor and other programs as an addition to the user interface.

主权项

1. A method of providing a pair of sequences of encrypted one time-pad communications keys (5&6, 4&7) by a server (1; 41) on a computer network, one to a sender (2, 3; 42, 43) and one to a receiver (2, 3; 42, 43), the method comprising the steps of:
a. receiving a sequence of random numbers from a random number generator; b. using said sequence of random numbers to generate a sequence of one-time-pad communications keys, each commencing with an identifier; and c. transmitting a copy of each of the keys of said sequence of keys (5&6, 4&7) from the server (1; 41) via the computer network to each of a data set sender (2, 3; 42, 43) and to a data set receiver (2, 3; 42, 43), each copy encrypted with a key encryption key.