KR101783495B1 - 커스트마이징된 마스킹에 의해 보호된 저-복잡성 전자 회로 - Google Patents
커스트마이징된 마스킹에 의해 보호된 저-복잡성 전자 회로 Download PDFInfo
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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
- H04L9/002—Countermeasures against attacks on cryptographic mechanisms
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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
- H04L9/002—Countermeasures against attacks on cryptographic mechanisms
- H04L9/003—Countermeasures against attacks on cryptographic mechanisms for power analysis, e.g. differential power analysis [DPA] or simple power analysis [SPA]
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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
- H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
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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
- H04L2209/04—Masking or blinding
- H04L2209/046—Masking or blinding of operations, operands or results of the operations
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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
- H04L2209/12—Details relating to cryptographic hardware or logic circuitry
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Abstract
Description
도 1 은 마스킹에 의해 보호된 페이스탈 함수의 예를 나타낸다.
도 2 는 마스킹에 의해 보호된 암호해독 회로의 예를 제공하고, 비선형 부분들은 언마스킹된다.
도 3 은 본 발명에 따른 마스킹에 의해 보호된 AES 알고리즘의 구현을 나타낸다.
Claims (17)
- 마스킹에 의해 보호된 암호해독 회로로서,
상기 회로는 적어도 하나의 키 를 이용하여 복수의 바이너리 워드들을 암호화하기 위한 수단, 상기 복수의 바이너리 워드들에 선형 프로세싱 연산들 (216) 및 비선형 프로세싱 연산들 (213) 을 적용하기 위한 수단, 및 상기 복수의 바이너리 워드들을 마스킹하기 위한 수단을 포함하고,
상기 회로는,
상기 복수의 바이너리 워드들이 각각의 마스크들 을 이용함으로써 상기 비선형 프로세싱 연산들의 상류에서 언마스킹되고 (214), 각각의 마스크들 을 이용함으로써 상기 비선형 프로세싱 연산들의 하류에서 마스킹되고 (215), 상기 마스크 및 는 상기 회로의 각 경우에 특정된 마스크들의 세트의 부분을 형성하고, 각 상기 마스크 는 이고 이도록 프라이머리 마스크 로부터 추정된 세컨더리 마스크이고, 상기 함수 P(x) 는 x 의 엘리먼트들을 치환하기 위한 함수에 대응하고, 상기 프라이머리 마스크들 은 동일한 길이의 서브마스크들 중 하나보다 큰 정수 (integer number) 로 구성되며, 상기 세컨더리 마스크들 은 상기 서브마스크들의 치환에 의해 생성되는 것을 특징으로 하는 암호해독 회로. - 제 1 항에 있어서,
상기 비선형 프로세싱 연산들, 상기 비선형 프로세싱 연산들의 상류에서의 상기 언마스킹 (214) 및 상기 비선형 프로세싱 연산들의 하류에서의 상기 마스킹 (215) 은 ROM 유형 메모리들 (209) 에서 구현되는 것을 특징으로 하는 암호해독 회로. - 삭제
- 삭제
- 제 7 항에 있어서,
상기 회로에 저장된 상기 프라이머리 마스크들의 세트 (303) 는 일 회로에서 다른 회로까지 상이한 것을 특징으로 하는 암호해독 회로. - 제 8 항에 있어서,
상기 프라이머리 마스크들의 세트는 내부 마스크 생성 회로를 이용하여 획득되는 것을 특징으로 하는 암호해독 회로. - 제 1 항 또는 제 2 항에 있어서,
상기 비선형 프로세싱 연산들은 S 박스들 (213, 310) 을 이용하여 구현되는 것을 특징으로 하는 암호해독 회로. - 제 1 항 또는 제 2 항에 있어서,
상기 비선형 프로세싱 연산들은, 레지스터에서의 결과의 샘플링 직전에 동일한 조합 블록에서의 상기 선형 프로세싱 연산들 이후에 적용되는 것을 특징으로 하는 암호해독 회로. - 제 1 항 또는 제 2 항에 있어서,
상기 회로는 FPGA 로 구현되는 것을 특징으로 하는 암호해독 회로. - 제 13 항에 있어서,
프라이머리 마스크들의 세트는 FPGA 회로 구성 파일의 변형을 이용하여 획득되는 것을 특징으로 하는 암호해독 회로. - 제 13 항에 있어서,
프라이머리 마스크들의 세트를 업데이트하는 것을 가능하게 하는 동적 재구성 수단 및 상기 비선형 프로세싱 연산들에 대응하는 상기 회로의 부분들을 구현하는 테이블을 포함하는 것을 특징으로 하는 암호해독 회로. - 제 1 항 또는 제 2 항에 있어서,
상기 회로는 ASIC 로 구현되는 것을 특징으로 하는 암호해독 회로.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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FR0958030 | 2009-11-13 | ||
FR0958030A FR2952773B1 (fr) | 2009-11-13 | 2009-11-13 | Circuit electronique de faible complexite protege par masquage personnalise |
PCT/EP2010/067064 WO2011057991A1 (fr) | 2009-11-13 | 2010-11-08 | Circuit electronique de faible complexite protege par masquage personnalise |
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KR20120109501A KR20120109501A (ko) | 2012-10-08 |
KR101783495B1 true KR101783495B1 (ko) | 2017-09-29 |
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KR1020127015118A KR101783495B1 (ko) | 2009-11-13 | 2010-11-08 | 커스트마이징된 마스킹에 의해 보호된 저-복잡성 전자 회로 |
Country Status (9)
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US (1) | US9197412B2 (ko) |
EP (1) | EP2499773B1 (ko) |
JP (1) | JP5987250B2 (ko) |
KR (1) | KR101783495B1 (ko) |
CN (1) | CN102648600B (ko) |
CA (1) | CA2780719C (ko) |
ES (1) | ES2571225T3 (ko) |
FR (1) | FR2952773B1 (ko) |
WO (1) | WO2011057991A1 (ko) |
Families Citing this family (14)
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US8958550B2 (en) * | 2011-09-13 | 2015-02-17 | Combined Conditional Access Development & Support. LLC (CCAD) | Encryption operation with real data rounds, dummy data rounds, and delay periods |
JP5612007B2 (ja) * | 2012-03-15 | 2014-10-22 | 株式会社東芝 | 暗号化鍵生成装置 |
JP6089668B2 (ja) * | 2012-12-13 | 2017-03-08 | 日本電気株式会社 | 暗号化処理回路及び復号処理回路とその方法並びにそのプログラム |
JPWO2015059845A1 (ja) * | 2013-10-24 | 2017-03-09 | 日本電気株式会社 | 暗号化処理回路及びその方法及びプログラム並びに復号処理回路 |
EP3475825B1 (en) | 2016-06-23 | 2023-01-25 | Cryptography Research, Inc. | Cryptographic operations employing non-linear share encoding for protecting from external monitoring attacks |
US10530567B2 (en) * | 2016-10-05 | 2020-01-07 | Megachips Corporation | Encryption device and memory device |
DE102017002153A1 (de) * | 2017-03-06 | 2018-09-06 | Giesecke+Devrient Mobile Security Gmbh | Übergang von einer booleschen Maskierung zu einer arithmetischen Maskierung |
EP3422176A1 (en) * | 2017-06-28 | 2019-01-02 | Gemalto Sa | Method for securing a cryptographic process with sbox against high-order side-channel attacks |
US11562101B2 (en) * | 2017-11-13 | 2023-01-24 | Intel Corporation | On-device bitstream validation |
US11372983B2 (en) | 2019-03-26 | 2022-06-28 | International Business Machines Corporation | Employing a protected key in performing operations |
US11201730B2 (en) * | 2019-03-26 | 2021-12-14 | International Business Machines Corporation | Generating a protected key for selective use |
FR3096206A1 (fr) * | 2019-05-17 | 2020-11-20 | Stmicroelectronics (Grenoble 2) Sas | Dispositif de protection de donnees masquees et procede associe |
US11700111B2 (en) * | 2019-06-26 | 2023-07-11 | Cryptography Research, Inc. | Platform neutral data encryption standard (DES) cryptographic operation |
CN113343175B (zh) * | 2021-05-31 | 2022-05-27 | 中国电子科技集团公司第三十研究所 | 一种自动化搜索spn型轻量级分组密码活跃s盒的快速方法 |
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- 2010-11-08 CN CN201080056401.9A patent/CN102648600B/zh active Active
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- 2010-11-08 WO PCT/EP2010/067064 patent/WO2011057991A1/fr active Application Filing
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Publication number | Publication date |
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CN102648600A (zh) | 2012-08-22 |
JP2013511057A (ja) | 2013-03-28 |
FR2952773B1 (fr) | 2012-07-20 |
EP2499773A1 (fr) | 2012-09-19 |
US20130129081A1 (en) | 2013-05-23 |
ES2571225T3 (es) | 2016-05-24 |
JP5987250B2 (ja) | 2016-09-07 |
CA2780719C (en) | 2019-08-20 |
CN102648600B (zh) | 2014-12-24 |
US9197412B2 (en) | 2015-11-24 |
EP2499773B1 (fr) | 2016-02-17 |
FR2952773A1 (fr) | 2011-05-20 |
WO2011057991A1 (fr) | 2011-05-19 |
CA2780719A1 (en) | 2011-05-19 |
KR20120109501A (ko) | 2012-10-08 |
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