Title: Encryption method, decode method for cryptograph, encrypting machine, cryptograph decoder and communication system
Application Number: 200610093038 Application Date: 2006.06.19
Publication Number: 1959770 Publication Date: 2007.05.09
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G09C1/00
Applicant(s) Name: Fujitsu Ltd. Address:
Inventor(s) Name: Yoshida Setsuo;Hirota Osamu;Onaka Hiroshi
Attorney & Agent: lihui
Abstract:
    A quantum encryption technique including a step for modulating one-bit input data into a coded signal by associating it with a discrete value of at least two bits determined by pseudo random numbers and physical random numbers and a step for channel-coding and 10 outputting the coded signal, wherein 1) the coded signal can be demodulated into the input data by the pseudo random number, 2) the number of sets of input data, pseudo random number, and physical random number corresponding to a particular discrete value is equal for two values of the 15 input data, and 3) the number of sets of pseudo random number and physical random number corresponding to respective values of the input data and respective values of the discrete value is equally associated also with any set of them.
Time: 29