JP6472766B2 - 乱数生成回路 - Google Patents
乱数生成回路 Download PDFInfo
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- JP6472766B2 JP6472766B2 JP2016052320A JP2016052320A JP6472766B2 JP 6472766 B2 JP6472766 B2 JP 6472766B2 JP 2016052320 A JP2016052320 A JP 2016052320A JP 2016052320 A JP2016052320 A JP 2016052320A JP 6472766 B2 JP6472766 B2 JP 6472766B2
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- circuit
- oscillation signal
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
- G06F21/72—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information in cryptographic circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
- H03K3/03—Astable circuits
- H03K3/0315—Ring oscillators
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/84—Generating pulses having a predetermined statistical distribution of a parameter, e.g. random pulse generators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/08—Randomization, e.g. dummy operations or using noise
Description
以下、図面を参照しながら乱数生成回路(エントロピーソース生成回路)の実施例を説明する。乱数生成回路とは、情報セキュリティなどで用いられる高エントロピーな乱数(0又は1)を生成する回路のことである。
図6は、乱数生成回路の回路例を示している。
図6の乱数生成回路内のセレクタの例を説明する。
図6の乱数生成回路内の偏り検出ユニットの例を説明する。
図21は、コントローラによるデューティー比の制御例を示している。図22は、図21の制御例における選択信号の状態を示している。
上述の乱数生成回路を用いた乱数生成装置の例を説明する。
上述の乱数生成回路を利用したシステムの例を説明する。
以上、本実施例によれば、発振回路が出力する発振信号のデューティー比を制御することにより高エントロピーの乱数(ランダムデータ)を生成できる。
Claims (5)
- 第1の発振信号が入力され、所定のデューティー比を有する第2の発振信号を出力する第1の回路と、
第2の発振信号と前記第2の発振信号の周波数よりも低い周波数を有するクロックとに基づき複数の値をラッチする第2の回路と、
前記複数の値に基づき制御信号を出力する第3の回路と、
前記制御信号に基づき、前記所定のデューティー比が50%よりも小さくなっているときには前記所定のデューティー比を大きくし、前記所定のデューティー比が50%よりも大きくなっているときには前記所定のデューティー比を小さくするように前記第1の回路を制御する第4の回路と、
を具備する乱数生成回路。 - 前記第1の発振信号を生成する第5の回路をさらに備える、請求項1に記載の乱数生成回路。
- 前記第2の回路は、直列接続される複数のラッチ部を備え、前記複数の値は、前記複数のラッチ部にラッチされる、請求項1又は2に記載の乱数生成回路。
- 前記第1の回路は、複数の入力端子を備えるNANDゲート回路と、入力端子を備えるインバータ回路と、複数の入力端子を備えるNORゲート回路と、を備え、
前記第4の回路は、前記NANDゲート回路、インバータ回路、及び、NORゲート回路のうちの1つの選択を制御する、
請求項1乃至3のいずれか1項に記載の乱数生成回路。 - 前記第1の回路は、入力端子をそれぞれ備えるPチャネルFET及びNチャネルFETを含み、
前記第4の回路は、前記PチャネルFETとNチャネルFETのうち少なくともいずれかの駆動力の変更を制御する、
請求項1乃至3のいずれか1項に記載の乱数生成回路。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016052320A JP6472766B2 (ja) | 2016-03-16 | 2016-03-16 | 乱数生成回路 |
US15/263,972 US10459692B2 (en) | 2016-03-16 | 2016-09-13 | Random number generator |
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---|---|---|---|
JP2016052320A JP6472766B2 (ja) | 2016-03-16 | 2016-03-16 | 乱数生成回路 |
Publications (2)
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JP2017167799A JP2017167799A (ja) | 2017-09-21 |
JP6472766B2 true JP6472766B2 (ja) | 2019-02-20 |
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JP2016052320A Active JP6472766B2 (ja) | 2016-03-16 | 2016-03-16 | 乱数生成回路 |
Country Status (2)
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US (1) | US10459692B2 (ja) |
JP (1) | JP6472766B2 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104702281B (zh) * | 2015-03-11 | 2017-12-05 | 华为技术有限公司 | 一种采样时钟产生电路及模数转换器 |
EP3729317B1 (en) * | 2017-12-22 | 2021-10-20 | Koninklijke Philips N.V. | A computer-implemented method of applying a first function to each data element in a data set, and a worker node for implementing the same |
CN110489351B (zh) * | 2018-05-14 | 2021-03-09 | 英韧科技(上海)有限公司 | 芯片指纹管理装置及安全芯片 |
CN110045947B (zh) * | 2019-04-22 | 2021-09-17 | 湖南国科微电子股份有限公司 | 一种随机数发生单元与装置 |
US11349462B1 (en) * | 2021-03-05 | 2022-05-31 | Taiwan Semiconductor Manufacturing Company, Ltd. | Selector-based random number generator and method thereof |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5524281B2 (ja) * | 1973-10-31 | 1980-06-27 | ||
JPS61265914A (ja) * | 1985-05-20 | 1986-11-25 | Nec Ic Microcomput Syst Ltd | デユ−テイ比調整回路 |
JP3372858B2 (ja) * | 1997-02-27 | 2003-02-04 | エヌイーシーマイクロシステム株式会社 | カウンタ |
US5937024A (en) | 1997-02-27 | 1999-08-10 | Nec Corporation | Counter for counting high frequency |
JP3788881B2 (ja) | 1999-03-09 | 2006-06-21 | 株式会社ルネサステクノロジ | Icカードと半導体集積回路装置 |
US6862605B2 (en) * | 2001-08-15 | 2005-03-01 | Scott A. Wilber | True random number generator and entropy calculation device and method |
JP3604658B2 (ja) * | 2001-09-26 | 2004-12-22 | 株式会社東芝 | 乱数生成回路 |
US7406267B2 (en) * | 2002-11-06 | 2008-07-29 | Finisar Corporation | Method and apparatus for transmitting a signal using thermal chirp management of a directly modulated transmitter |
JP3696209B2 (ja) | 2003-01-29 | 2005-09-14 | 株式会社東芝 | シード生成回路、乱数生成回路、半導体集積回路、icカード及び情報端末機器 |
JP2005033089A (ja) * | 2003-07-10 | 2005-02-03 | Matsushita Electric Ind Co Ltd | 半導体装置 |
JP2005174206A (ja) * | 2003-12-15 | 2005-06-30 | Sony Corp | 真性乱数生成装置または真性乱数生成方法 |
JP4982750B2 (ja) | 2007-01-22 | 2012-07-25 | 国立大学法人電気通信大学 | 乱数発生器及び乱数発生器の作成方法 |
US8676870B2 (en) * | 2007-09-18 | 2014-03-18 | Seagate Technology Llc | Active test and alteration of sample times for a ring based random number generator |
KR101481572B1 (ko) * | 2007-10-19 | 2015-01-26 | 삼성전자주식회사 | 난수 발생 장치 |
JP5074359B2 (ja) | 2008-11-12 | 2012-11-14 | 日本電信電話株式会社 | 乱数生成回路 |
JP5259830B2 (ja) | 2009-09-29 | 2013-08-07 | 株式会社東芝 | 乱数生成回路 |
JP5465636B2 (ja) | 2010-08-30 | 2014-04-09 | 日本電信電話株式会社 | 乱数生成回路 |
JP6034153B2 (ja) * | 2012-11-21 | 2016-11-30 | 株式会社東芝 | 乱数生成回路 |
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- 2016-03-16 JP JP2016052320A patent/JP6472766B2/ja active Active
- 2016-09-13 US US15/263,972 patent/US10459692B2/en active Active
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Publication number | Publication date |
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JP2017167799A (ja) | 2017-09-21 |
US10459692B2 (en) | 2019-10-29 |
US20170269904A1 (en) | 2017-09-21 |
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