WO2005114386A1 - 乱数取出し方法及びこれを用いた乱数生成装置 - Google Patents
乱数取出し方法及びこれを用いた乱数生成装置 Download PDFInfo
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- WO2005114386A1 WO2005114386A1 PCT/JP2005/009426 JP2005009426W WO2005114386A1 WO 2005114386 A1 WO2005114386 A1 WO 2005114386A1 JP 2005009426 W JP2005009426 W JP 2005009426W WO 2005114386 A1 WO2005114386 A1 WO 2005114386A1
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- pulse
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- random number
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/58—Random or pseudo-random number generators
- G06F7/588—Random number generators, i.e. based on natural stochastic processes
Definitions
- the present invention relates to a random number extracting method for extracting a physical random number, and a random number generating device using the method.
- thermal noise generating element As one method of extracting a physical random number based on a natural phenomenon, a method of using a semiconductor such as a resistor or a diode or a conductor as a thermal noise generating element is known. Since the thermal noise generated in these thermal noise generating elements is random in both frequency and amplitude, physical random numbers can be extracted based on the thermal noise.
- Various random number generators using such a thermal noise generating element are disclosed in many documents. In the random number generator, it is required to increase the uniformity of the frequency of each obtained value (the quality as a L number) and to generate random numbers at high speed.
- the most common method of generating a physical random number using a thermal noise generating element is to amplify and sample the thermal noise output from the thermal noise generating element at a certain instant, and compare the value with a certain threshold.
- This is a method of extracting random numbers.
- the amplified thermal noise output from the thermal noise generating element is sampled at regular intervals, and a rule is set to ⁇ 1 '' if the sampled value exceeds a certain threshold and ⁇ 0 '' otherwise.
- Another method of generating a physical random number using a thermal noise generating element is to measure a time interval until a thermal noise force that is generated randomly exceeds a certain threshold value and the force next exceeds the threshold value.
- a thermal noise force that is generated randomly exceeds a certain threshold value and the force next exceeds the threshold value.
- An example of a random number generation device according to this method is described in Japanese Patent Application Laid-Open No. 2001-134422.
- a circuit is configured to amplify the thermal noise output from the thermal noise generating element and generate a square pulse that rises at the moment when the waveform exceeds a certain threshold.
- Circuit for generating a clock having a frequency sufficiently higher than the clock and the clock A counter that counts the number of pulses is generated, and the clock generated between the generation of one pulse and the generation of the next pulse is counted by the counter, and this count value is extracted as a random number.
- the number of bits (n bits) of the counter is finite, the counter is reset when counting 2 n times, and starts counting again from 1, so the random number value actually extracted is limited to 2 n .
- an n-bit random number is generated based on one pulse of the thermal noise, so that the random number can be generated at a higher speed than the method of instantaneously sampling the thermal noise.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2001-134422
- the present invention has been made under such a technical background, and an object of the present invention is to extract random numbers at a higher speed than before without impairing the uniformity of the appearance frequency of random numbers. .
- the random number extracting method of the present invention generates at least two or more independent random pulse trains, measures a time interval between two pulses belonging to different random noise trains, and outputs the measured value as a random number.
- the measurement of the time interval is performed by using the pulse generated earlier in time of the two pulses as a start pulse of the counter, and a later generated pulse as a stop pulse of the counter, and the random number is determined by the counter. This can be performed by counting the number of count pulses having a frequency higher than that of Panoreth.
- the random number generation device using the above method includes, for example, at least two random pulse generation means for generating independent random pulse trains, and one random pulse generation means.
- a timer for measuring a time interval between a pulse from the pulse generator and a pulse having a different random pulse generator power, and configured to output a value measured by the timer as a random value can do.
- N is an integer of 2 or more random pulse generating means from first to Nth generating random pulse trains independent of each other, and first random norse generating means (N-1) time intervals between the pulse and the pulse from the other random pulse generator, the norm of the second random pulse generator, and the pulse from the other random pulse generator (N—1) time intervals between the pulse from the Nth random pulse generator and the other pulses from the random pulse generator. And a time measuring means for measuring the time intervals (N (N-1) time intervals in total).
- the time counting means includes, for example, a count pulse generating means and a counter for generating a count pulse having a frequency higher than the random north, and the counter measures a pulse that temporally precedes a time interval to be measured.
- the count pulse generated between the start pulse and the stop pulse is counted by using the start pulse and the following pulse in time as the stop pulse of the counter.
- N (N ⁇ 1) random numbers independent of each other that is, random numbers of a number approximately proportional to the square of N can be obtained by providing N independent random noise sequences. can get. Therefore, even if the frequency of each random norse is not so high, a high-speed random number generation device can be constructed by increasing the number of random pulses.
- FIG. 1 is a diagram for explaining the basic concept of the present invention.
- R and R in FIG. 1 are independent of each other.
- random pulse is a series of pulses generated at random in time, and “independent from each other” means that each pulse train has a different random pulse generator power.
- the basic idea of the present invention is that one pulse included in a pulse train of a certain random pulse is used as a start pulse, and one pulse included in a pulse train of another random pulse independent of this is used as a stop pulse. It measures the time interval between the start and stop panels and outputs the value. Since each pulse occurs randomly in time, the sequence of numbers obtained in this way is a random number. That is, in Fig. 1, time intervals t to t are measured, and the measured values (four numerical values in this case) are extracted as random numbers.
- the pulse r in the pulse r and the random pulse R can be used to generate random numbers.
- the interval width determined by the two adjacent pulses follows an exponential distribution, and the probability distribution function is expressed by the following equation.
- FIG. 2 shows a case where N pulse trains R to R from which N separate random pulse generator powers can be obtained are provided by further generalizing FIG. If you don't consider the above "pulse to death"
- one pulse included in the pulse train R is a start pulse
- N 2 1 3 N (N-1) random numbers are taken out simultaneously with (N-1) pulses as stop pulses be able to.
- N the number of random numbers that can be extracted almost simultaneously as a whole. If we consider “North to death”, the number of random numbers that can be actually extracted is N (N ⁇ 1) Z2, which increases in proportion to the square of the number N of random pulse generators. .
- the above-mentioned random pulse generator and its peripheral circuit are connected to each of the pulse trains R to R by 1
- the number of random numbers obtained per second is MN (N-1) Z2.
- the number of random numbers that can be extracted at one time is MN.
- FIG. 3 is a block diagram of the random pulse generator 5
- FIG. 4 is a block diagram of a random number generator using the random pulse generator 5 (5A to 5D) of FIG.
- the thermal noise generating element 10 is an element that outputs a pulse-like potential change based on thermal noise, and usually a resistor is used as the thermal noise generating element. Many. It is generally accepted that the generation of thermal noise is a random phenomenon.
- a block indicated by reference numeral 12 is an amplifier for amplifying thermal noise generated in the thermal noise generating element 10
- a block indicated by reference numeral 14 is a block for setting the amplified thermal noise signal to a predetermined threshold value. And outputs the result as pulse P. Therefore, the output pulse P from the comparator becomes a random pulse based on randomly generated thermal noise.
- FIG. 4 is configured using four random pulse generators 5 (5A to 5D) shown in FIG. However, if there are two or more, the number of random pulse generators is arbitrary.
- the output signal Pa from the random pulse generator 5A is a pulse train of a random pulse, which is supplied to the counter Ca as a reset signal (start signal), and the registers Rba, Rca, Rda as a load signal (stop signal). Supplied to The random pulse generators 5B, 5C, and 5D also supply random pulses Pb, Pc, and Pd to corresponding counters and registers, respectively.
- the random pulse generators 5A, 5B, 5C, and 5D and the random panels Pa, Pb, Pc, and Pd output therefrom are mutually independent.
- the counter Ca generates a count pulse generated at high speed (it is necessary to have a frequency higher than the frequency of the random pulse at least), and is connected to the random pulse generators 5B, 5C, and 5D, respectively.
- the registers Rab, Rac, and Rad receives a count pulse from the counter Cb connected to the random pulse generator 5B.
- the register Rca receives a count pulse from the counter Cc connected to the random pulse generator 5C.
- the register Rda receives a count pulse from the counter Cd connected to the random pulse generator 5D.
- the counters Ca Cb, Cc, and Cd start supplying count pulses when receiving reset signals from the respective random pulse generators.
- Each register stores the count value of the supplied count pulse when a load signal is received from each random noise generator. Thus, each count value stored in each counter becomes a random value.
- FIG. 1 is a diagram for explaining a basic concept of the present invention.
- FIG. 2 is a diagram for explaining a case in which N pulse trains R to R obtained by N different random pulse generators are provided by further generalizing FIG. 1;
- FIG. 3 is a block diagram of a random pulse generation circuit 5.
- FIG. 4 is a block diagram of a random number generator using the random pulse generator of FIG. 3.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05743360.9A EP1755033B1 (en) | 2004-05-24 | 2005-05-24 | Random number extraction method and random number generation device using the same |
JP2006513758A JP4486961B2 (ja) | 2004-05-24 | 2005-05-24 | 乱数取出し方法及びこれを用いた乱数生成装置 |
US11/604,125 US8037117B2 (en) | 2004-05-24 | 2006-11-22 | Random number derivation method and random number generator using same |
Applications Claiming Priority (2)
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JP2004-153233 | 2004-05-24 | ||
JP2004153233 | 2004-05-24 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/604,125 Continuation US8037117B2 (en) | 2004-05-24 | 2006-11-22 | Random number derivation method and random number generator using same |
Publications (1)
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WO2005114386A1 true WO2005114386A1 (ja) | 2005-12-01 |
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PCT/JP2005/009426 WO2005114386A1 (ja) | 2004-05-24 | 2005-05-24 | 乱数取出し方法及びこれを用いた乱数生成装置 |
Country Status (4)
Country | Link |
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US (1) | US8037117B2 (ja) |
EP (1) | EP1755033B1 (ja) |
JP (1) | JP4486961B2 (ja) |
WO (1) | WO2005114386A1 (ja) |
Cited By (4)
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JP2008048411A (ja) * | 2006-08-14 | 2008-02-28 | Samsung Electronics Co Ltd | ランダム信号を発生する回路及び方法 |
WO2009028717A1 (ja) * | 2007-08-29 | 2009-03-05 | Osamu Kameda | 乱数の生成システム及び方法 |
JP2009217513A (ja) * | 2008-03-10 | 2009-09-24 | Le Tekku:Kk | 乱数発生装置及び乱数発生方法 |
US8037117B2 (en) | 2004-05-24 | 2011-10-11 | Leisure Electronics Technology Co., Ltd. | Random number derivation method and random number generator using same |
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US10430161B1 (en) | 2018-04-09 | 2019-10-01 | Jan J. Tatarkiewicz | Apparatus, systems, and methods comprising tritium random number generator |
IT201800009064A1 (it) * | 2018-10-01 | 2020-04-01 | Massimo Luigi Maria Caccia | Dispositivo e metodo per generare sequenze random di bit |
US11048478B1 (en) | 2020-03-03 | 2021-06-29 | Randaemon Sp. Z O.O. | Method and apparatus for tritium-based true random number generator |
US10901695B1 (en) | 2020-03-03 | 2021-01-26 | Randaemon Sp. Z O.O. | Apparatus, systems, and methods for beta decay based true random number generator |
US11249725B1 (en) | 2021-07-22 | 2022-02-15 | Randaemon Sp. Zo.O. | Method and apparatus for highly effective on-chip true random number generator utilizing beta decay |
US11586421B2 (en) | 2021-07-22 | 2023-02-21 | Randaemon Sp. Z O.O. | Method for making cost-effective nickel-63 radiation source for true random number generators |
US11281432B1 (en) | 2021-07-22 | 2022-03-22 | Randaemon Sp. Z O.O. | Method and apparatus for true random number generator based on nuclear radiation |
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JP2000276329A (ja) * | 1999-03-26 | 2000-10-06 | Takeshi Saito | 超高速物理乱数生成装置 |
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JP2004088320A (ja) * | 2002-08-26 | 2004-03-18 | Iwatsu Electric Co Ltd | 擬似雑音発生装置 |
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EP1755033B1 (en) | 2004-05-24 | 2013-12-11 | Leisure Electronics Technology Co., Ltd. | Random number extraction method and random number generation device using the same |
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2005
- 2005-05-24 EP EP05743360.9A patent/EP1755033B1/en not_active Not-in-force
- 2005-05-24 WO PCT/JP2005/009426 patent/WO2005114386A1/ja not_active Application Discontinuation
- 2005-05-24 JP JP2006513758A patent/JP4486961B2/ja active Active
-
2006
- 2006-11-22 US US11/604,125 patent/US8037117B2/en not_active Expired - Fee Related
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JPH11296348A (ja) * | 1998-04-07 | 1999-10-29 | Takeshi Saito | 自然乱数およびハイブリッド乱数生成装置 |
JP2000276329A (ja) * | 1999-03-26 | 2000-10-06 | Takeshi Saito | 超高速物理乱数生成装置 |
JP2001134432A (ja) * | 1999-11-08 | 2001-05-18 | Nippon Chem Ind Co Ltd | 社内ソフトウェアの利用権限の管理システム |
JP2003084970A (ja) * | 2001-09-07 | 2003-03-20 | Nec Corp | 乱数発生方法及び装置 |
JP2004088320A (ja) * | 2002-08-26 | 2004-03-18 | Iwatsu Electric Co Ltd | 擬似雑音発生装置 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8037117B2 (en) | 2004-05-24 | 2011-10-11 | Leisure Electronics Technology Co., Ltd. | Random number derivation method and random number generator using same |
JP2008048411A (ja) * | 2006-08-14 | 2008-02-28 | Samsung Electronics Co Ltd | ランダム信号を発生する回路及び方法 |
WO2009028717A1 (ja) * | 2007-08-29 | 2009-03-05 | Osamu Kameda | 乱数の生成システム及び方法 |
JP2009217513A (ja) * | 2008-03-10 | 2009-09-24 | Le Tekku:Kk | 乱数発生装置及び乱数発生方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1755033A4 (en) | 2007-10-10 |
US8037117B2 (en) | 2011-10-11 |
EP1755033A1 (en) | 2007-02-21 |
US20070156798A1 (en) | 2007-07-05 |
EP1755033B1 (en) | 2013-12-11 |
JP4486961B2 (ja) | 2010-06-23 |
JPWO2005114386A1 (ja) | 2008-03-27 |
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