JP6900176B2 - ハードウェア支援型の擬似乱数の高速生成 - Google Patents
ハードウェア支援型の擬似乱数の高速生成 Download PDFInfo
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- 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
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- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F21/602—Providing cryptographic facilities or services
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- 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
- G06F7/582—Pseudo-random number generators
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- H—ELECTRICITY
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- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
- H04L9/0625—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation with splitting of the data block into left and right halves, e.g. Feistel based algorithms, DES, FEAL, IDEA or KASUMI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
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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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
- H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
- H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
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- H—ELECTRICITY
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- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
- H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
- H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
- H04L9/0668—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator producing a non-linear pseudorandom sequence
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Description
1)nビットの入力をnビットの出力にマッピングする(mapped)(n=ブロックサイズ)
2)混合処理は、大量の秘密鍵材料に依存しており、大量の秘密鍵材料は、1つの短い鍵から、或いは、真性乱数生成器により生成することが可能である。
3)混合関数は、全単射である(可逆性を有する)
4)全ての入力ビットは、全ての出力ビットに対して非線形に影響を及ぼす。
5)ほとんどの非空の(nonempty)入力ビットの組(これらは、鍵材料から個々に選択される)もまた、全ての出力ビットに影響を及ぼす(影響が打ち消されることはない)。
Claims (13)
- 入力レジスタ、プロセッサ及びメモリを少なくとも含むコンピュータによって疑似乱数を生成するための方法であって、
前記入力レジスタによって構成されるカウンタのカウンタ値を初期化し、
ビット単位の前記カウンタ値を前記カウンタから混合関数へ送り、
前記ビット単位の前記カウンタ値に対して前記混合関数に基づき前記プロセッサにより混合処理を行って疑似乱数を生成する、各ステップを含む方法であって、
さらに、
前記入力レジスタの容量を超えない範囲で前記カウンタ値がとり得る値のすべてをできる限り多く繰り返すことにより、前記入力レジスタに入力を行い、
前記入力レジスタが満たされるまで、前記入力レジスタにおける残りの空いたビットに前記カウンタ値の個々のビットを入力する、各ステップを含み、
前記混合処理においては、前記ビット単位の前記カウンタ値の入力の第1セグメントが前記ビット単位の前記カウンタ値の出力の第1セグメントとしてマッピングされ、
前記混合処理は、排他的論理和「XOR」ツリー混合関数、置換転置混合関数、及び、二重混合ファイステル混合関数からなる群から選択される関数を含む、方法。 - 前記混合処理は、一のサイクルと、当該一のサイクルのあとに行われる後続するサイクルとを有しており、
前記方法は、さらに、
所定値だけ前記カウンタ値をインクリメントし、
前記混合処理における前記後続するサイクルのための入力値として、前記疑似乱数を使用する、各ステップの少なくとも1つを含む、請求項1に記載の方法。 - 前記混合関数に基づく前記混合処理は、可逆性を有すること、及び、非線形であること、のいずれかの条件を満たす、請求項1に記載の方法。
- 前記混合処理は、さらに、並列された複数の混合関数において前記カウンタ値に対する混合処理を少なくとも2回行い、前記並列された複数の混合関数からの出力の排他的論理和をとる(「XOR処理する」)、各ステップを含む、請求項1に記載の方法。
- さらに、
一方向性関数により前記疑似乱数を処理するか、或いは暗号化ハッシュ関数を用いて前記疑似乱数をハッシュ化し、
前記疑似乱数の前記一方向性関数又は前記疑似乱数のハッシュ化の結果を、前記混合関数の後続するサイクルのための入力値として用いる、各ステップを含む、請求項1に記載の方法。 - さらに、前記疑似乱数を用いて前記メモリに暗号化データを保存し易くするステップを含む、請求項1に記載の方法。
- 疑似乱数を生成するためのシステムであって、
カウンタ値で初期化されるカウンタと、
ビット単位の前記カウンタ値に対して混合処理を行って疑似乱数を生成する混合関数の処理部と、を含むシステムであって、
前記混合関数は、少なくとも、以下の(a)および(b)のうちの1つ、すなわち、
(a)前記ビット単位の前記カウンタ値の第1セグメントを前記ビット単位の前記カウンタ値の出力の第1セグメントとしてマッピングする関数である、
(b)XORツリー混合関数、置換転置混合関数、及び、二重混合ファイステル混合関数からなる群から選択される関数である、
を満たしている、システム。 - 前記カウンタ値は、所定値でインクリメントされる、請求項7に記載のシステム。
- 前記混合関数による前記混合処理は、一のサイクルと、当該一のサイクルのあとに行われる後続するサイクルとを有しており、前記疑似乱数は、前記後続するサイクルのための入力値として機能する、請求項7に記載のシステム。
- 前記疑似乱数に基づいて暗号化データの保存が容易とされたメモリを有する記憶装置をさらに含み、前記暗号化データは、暗号鍵、調整可能暗号のための調整値、及びノンスからなる群から選択される、請求項7に記載のシステム。
- 前記混合処理は、並列に機能する少なくとも2つの混合関数により実行され、前記少なくとも2つの混合関数からの出力がXOR処理される、請求項7に記載のシステム。
- 少なくとも、
前記混合関数は、可逆性を有すること、及び、
前記混合関数は、非線形であること、のうちの一方の条件を満たす、請求項7に記載のシステム。 - 前記混合関数による前記混合処理は、一のサイクルと、当該一のサイクルのあとに行われる後続するサイクルとを有しており、
前記疑似乱数は、一方向性関数により処理されるか、或いは暗号化ハッシュ関数を用いてハッシュ化され、
前記疑似乱数の前記一方向性の処理又は前記疑似乱数のハッシュ化の結果は、前記後続するサイクルのための入力値として用いられる、請求項7に記載のシステム。
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US14/961,307 US10142103B2 (en) | 2015-12-07 | 2015-12-07 | Hardware assisted fast pseudorandom number generation |
US14/961,307 | 2015-12-07 |
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JP6900176B2 true JP6900176B2 (ja) | 2021-07-07 |
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US (1) | US10142103B2 (ja) |
JP (1) | JP6900176B2 (ja) |
KR (1) | KR102544298B1 (ja) |
CN (1) | CN107017981B (ja) |
SG (1) | SG10201607934XA (ja) |
TW (1) | TWI781911B (ja) |
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RU2776346C1 (ru) * | 2021-07-08 | 2022-07-19 | федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский ядерный университет МИФИ" (НИЯУ МИФИ) | Генератор псевдослучайных чисел |
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US11449311B2 (en) * | 2017-11-07 | 2022-09-20 | Google Llc | Random number generator |
CN108768615B (zh) * | 2018-05-16 | 2021-04-13 | 济南蓝剑钧新信息科技有限公司 | 散列算法在同一框架下的asic芯片实现方法 |
US11265149B2 (en) * | 2018-11-08 | 2022-03-01 | Daniel Eugene Hale | Apparatus and method for unbreakable data encryption |
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CN110221810B (zh) * | 2019-03-14 | 2021-05-11 | 西安电子科技大学 | 一种基于细胞自动机的可变结构伪随机数生成方法、装置及系统 |
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CN110928523B (zh) * | 2019-12-04 | 2021-11-19 | 中体彩科技发展有限公司 | 用于彩票行业的随机数获取方法及系统 |
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RU2776346C1 (ru) * | 2021-07-08 | 2022-07-19 | федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский ядерный университет МИФИ" (НИЯУ МИФИ) | Генератор псевдослучайных чисел |
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JP2017107195A (ja) | 2017-06-15 |
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US20170163416A1 (en) | 2017-06-08 |
TWI781911B (zh) | 2022-11-01 |
SG10201607934XA (en) | 2017-07-28 |
TW201721407A (zh) | 2017-06-16 |
KR102544298B1 (ko) | 2023-06-19 |
US10142103B2 (en) | 2018-11-27 |
CN107017981B (zh) | 2021-07-13 |
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