RANDOM NUMBER EXPANDING DEVICE, RANDOM NUMBER EXPANDING METHOD, AND NON-TRANSITORY COMPUTER READABLE RECORDING MEDIUM STORING RANDOM NUMBER EXPANDING PROGRAM
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United States of America Patent
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Jan 15, 2015
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Jan 15, 2015
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A random number expanding device (100) includes an expanding unit (120) that expands a random number r(M) to an N bits random number s(N) using a logical operation that is obtained by multiplication of one matrix of a check matrix with a size of M×N and a generator matrix with a size of M×N which are determined from an (N, N−M, D) linear code for error correction by a vector in a case in which the random number r(M) is the vector with M components, the multiplication being performed through addition based on an exclusive OR. Since the random number expanding device (100) includes the expanding unit (120), it is possible to reduce the bit numbers of random numbers to be used, and counter an irradiation attack with multiple laser beams.
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