CN104704768B - 用于从用作物理不可克隆功能的存储器中生成密码密钥的系统 - Google Patents

用于从用作物理不可克隆功能的存储器中生成密码密钥的系统 Download PDF

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CN104704768B
CN104704768B CN201380052311.6A CN201380052311A CN104704768B CN 104704768 B CN104704768 B CN 104704768B CN 201380052311 A CN201380052311 A CN 201380052311A CN 104704768 B CN104704768 B CN 104704768B
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memory
contents
encrypted
order
content
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CN104704768A (zh
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E·范德斯拉斯
M·范许尔斯特
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G06F12/1408—Protection against unauthorised use of memory or access to memory by using cryptography
    • 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
    • H04L9/0866—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving user or device identifiers, e.g. serial number, physical or biometrical information, DNA, hand-signature or measurable physical characteristics
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • 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
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3271—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using challenge-response
    • H04L9/3278—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using challenge-response using physically unclonable functions [PUF]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/10—Providing a specific technical effect
    • G06F2212/1052—Security improvement
    • 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
    • H04L2209/24—Key scheduling, i.e. generating round keys or sub-keys for block encryption

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Storage Device Security (AREA)
CN201380052311.6A 2012-10-04 2013-09-10 用于从用作物理不可克隆功能的存储器中生成密码密钥的系统 Active CN104704768B (zh)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP12187213.9 2012-10-04
EP12187213 2012-10-04
EP12194713 2012-11-29
EP12194713.9 2012-11-29
PCT/EP2013/068746 WO2014053286A1 (en) 2012-10-04 2013-09-10 System for generating a cryptographic key from a memory used as a physically unclonable function

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CN104704768A CN104704768A (zh) 2015-06-10
CN104704768B true CN104704768B (zh) 2018-01-05

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US (1) US9430406B2 (enExample)
EP (1) EP2904732B1 (enExample)
JP (1) JP6267207B2 (enExample)
KR (1) KR102201062B1 (enExample)
CN (1) CN104704768B (enExample)
WO (1) WO2014053286A1 (enExample)

Families Citing this family (89)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014208210A1 (de) * 2014-04-30 2015-11-19 Siemens Aktiengesellschaft Ableiten eines gerätespezifischen Wertes
US9672342B2 (en) 2014-05-05 2017-06-06 Analog Devices, Inc. System and device binding metadata with hardware intrinsic properties
US9946858B2 (en) 2014-05-05 2018-04-17 Analog Devices, Inc. Authentication system and device including physical unclonable function and threshold cryptography
US10432409B2 (en) 2014-05-05 2019-10-01 Analog Devices, Inc. Authentication system and device including physical unclonable function and threshold cryptography
IL234956A (en) * 2014-10-02 2017-10-31 Kaluzhny Uri Data bus protection with enhanced key entropy
US9640247B2 (en) 2015-01-14 2017-05-02 Qualcomm Incorporated Methods and apparatuses for generating random numbers based on bit cell settling time
EP3046096B1 (en) 2015-01-15 2022-03-30 Siemens Aktiengesellschaft A protection method of writting encrypted data to a memory device and reading decrypted data from the memory device using the power up of a PUF
EP3046095B1 (en) * 2015-01-15 2021-10-20 Siemens Aktiengesellschaft A method of protecting diverse applications stored on an integrated circuit using PUFs
US9425803B1 (en) * 2015-05-07 2016-08-23 The United States Of America As Represented By The Secretary Of The Navy Apparatuses and methods for implementing various physically unclonable function (PUF) and random number generator capabilities
US9875378B2 (en) 2015-06-12 2018-01-23 QUALCOMOM Incorporated Physically unclonable function assisted memory encryption device techniques
WO2017048257A1 (en) 2015-09-17 2017-03-23 Hewlett Packard Enterprise Development Lp Obscuration of a cache signal
EP3147830B1 (en) * 2015-09-23 2020-11-18 Nxp B.V. Protecting an integrated circuit
US20170126414A1 (en) * 2015-10-28 2017-05-04 Texas Instruments Incorporated Database-less authentication with physically unclonable functions
WO2017084895A1 (en) * 2015-11-20 2017-05-26 Intrinsic Id B.V. Puf identifier assignment and testing method and device
DE102016201665A1 (de) * 2016-02-03 2017-08-03 Siemens Aktiengesellschaft Verschlüsseln des Speicherinhalts eines Speichers in einem eingebetteten System
US10572651B2 (en) 2016-02-16 2020-02-25 Samsung Electronics Co., Ltd. Key generating method and apparatus using characteristic of memory
US10097348B2 (en) * 2016-03-24 2018-10-09 Samsung Electronics Co., Ltd. Device bound encrypted data
US11843597B2 (en) * 2016-05-18 2023-12-12 Vercrio, Inc. Automated scalable identity-proofing and authentication process
US10177923B2 (en) * 2016-07-15 2019-01-08 Hiroshi Watanabe Electronic appliance and network of the same
US10855477B2 (en) 2016-08-04 2020-12-01 Macronix International Co., Ltd. Non-volatile memory with physical unclonable function and random number generator
US10404478B2 (en) 2016-08-04 2019-09-03 Macronix International Co., Ltd. Physical unclonable function using divided threshold distributions in non-volatile memory
US11258599B2 (en) 2016-08-04 2022-02-22 Macronix International Co., Ltd. Stable physically unclonable function
US10680809B2 (en) 2016-08-04 2020-06-09 Macronix International Co., Ltd. Physical unclonable function for security key
US10911229B2 (en) 2016-08-04 2021-02-02 Macronix International Co., Ltd. Unchangeable physical unclonable function in non-volatile memory
CN106301786B (zh) * 2016-08-10 2019-04-02 南京航空航天大学 一种基于sram型存储器的物理不可克隆函数响应纠错电路
US10318748B2 (en) * 2016-09-30 2019-06-11 Intel Corporation Techniques to protect fuses against non-destructive attacks
US10387660B1 (en) * 2016-10-17 2019-08-20 National Technology & Engineering Solutions Of Sandia, Llc Computational optical physical unclonable function
US10394492B2 (en) * 2016-10-26 2019-08-27 Lenovo Enterprise Solutions (Singapore) Pte. Ltd. Securing a media storage device using write restriction mechanisms
US9811689B1 (en) 2016-12-27 2017-11-07 Macronix International Co., Ltd. Chip ID generation using physical unclonable function
US10082975B1 (en) * 2017-03-02 2018-09-25 Micron Technology, Inc. Obfuscation-enhanced memory encryption
JP6882666B2 (ja) * 2017-03-07 2021-06-02 富士通株式会社 鍵生成装置および鍵生成方法
CN106933752B (zh) * 2017-03-09 2019-10-08 西安电子科技大学 一种sram型fpga的加密装置及方法
WO2018183572A1 (en) * 2017-03-29 2018-10-04 Board Of Regents, The University Of Texas System Reducing amount of helper data in silicon physical unclonable functions via lossy compression without production-time error characterization
KR101974465B1 (ko) * 2017-05-25 2019-08-23 한밭대학교 산학협력단 노이즈가 삽입된 물리적 복제 불가 함수 시스템
US10425235B2 (en) 2017-06-02 2019-09-24 Analog Devices, Inc. Device and system with global tamper resistance
US10958452B2 (en) 2017-06-06 2021-03-23 Analog Devices, Inc. System and device including reconfigurable physical unclonable functions and threshold cryptography
US11093588B2 (en) * 2017-06-26 2021-08-17 Micron Technology, Inc. Memory system including data obfuscation
CN107196766B (zh) * 2017-07-20 2023-04-14 中国工程物理研究院电子工程研究所 一种小型化量子认证系统
EP3435586B1 (en) * 2017-07-25 2019-08-07 Intrinsic ID B.V. Method to reduce aging of a cache memory
US10949546B2 (en) 2017-08-02 2021-03-16 Samsung Electronics Co., Ltd. Security devices, electronic devices and methods of operating electronic devices
EP3454318B1 (en) * 2017-09-12 2022-05-11 eMemory Technology Inc. Security system with entropy bits generated by a puf
CN107908980B (zh) * 2017-10-10 2021-11-23 芯海科技（深圳）股份有限公司 一种存储器数据加密保护的实现方法
US11050574B2 (en) 2017-11-29 2021-06-29 Taiwan Semiconductor Manufacturing Company, Ltd. Authentication based on physically unclonable functions
CN108229215A (zh) * 2017-12-06 2018-06-29 杭州中天微系统有限公司 一种地址加扰的存储装置及方法
CN108182371A (zh) * 2017-12-22 2018-06-19 杭州中天微系统有限公司 一种片上系统的片外存储器地址加扰装置及方法
CN110018810B (zh) * 2018-01-10 2021-05-18 力旺电子股份有限公司 随机码产生器
CN111630598B (zh) * 2018-01-23 2023-04-11 新唐科技日本株式会社 非易失性存储装置以及其写入方法
US11265151B2 (en) * 2018-03-09 2022-03-01 Arizona Board Of Regents On Behalf Of Northern Arizona University Key exchange schemes with addressable elements
JP6752247B2 (ja) * 2018-03-09 2020-09-09 三菱重工業株式会社 情報配信装置、配信対象装置、情報配信システム、情報配信方法及びプログラム
EP3562092A1 (en) * 2018-04-26 2019-10-30 Thales Dis Design Services Sas Method for generating on-board a cryptographic key using a physically unclonable function
GB201806997D0 (en) * 2018-04-30 2018-06-13 Univ Leuven Kath Configurable hardware device
US10742406B2 (en) * 2018-05-03 2020-08-11 Micron Technology, Inc. Key generation and secure storage in a noisy environment
US11063755B2 (en) 2018-05-07 2021-07-13 Cryptography Research, Inc. Generating a key at a device based on a memory of the device
JP2021526745A (ja) 2018-06-11 2021-10-07 クリプトグラフィ リサーチ， インコーポレイテッド デバイスの物理的変動に関連する関数に基づくターゲットデータの生成
US11113422B2 (en) 2018-08-03 2021-09-07 Micron Technology, Inc. Data protection in computer processors
US11074198B2 (en) 2018-09-18 2021-07-27 Micron Technology, Inc. Key management in computer processors
US11303462B2 (en) 2018-11-19 2022-04-12 Arizona Board Of Regents On Behalf Of Northern Arizona University Unequally powered cryptography using physical unclonable functions
KR102263877B1 (ko) * 2018-12-18 2021-06-14 시큐리티플랫폼 주식회사 디바이스 고유암호키 생성기 및 방법
CN109656840A (zh) * 2018-12-21 2019-04-19 成都海光集成电路设计有限公司 一种数据加解密的装置、方法、存储介质、以及数据存储系统
US11233662B2 (en) * 2018-12-26 2022-01-25 Arizona Board Of Regents On Behalf Of Northern Arizona University Keyless encrypting schemes using physical unclonable function devices
TWI734314B (zh) * 2018-12-31 2021-07-21 美商美光科技公司 用於將數位指紋提供至主機裝置之系統、方法及非暫時性電腦可讀媒體
US11514174B2 (en) 2019-01-23 2022-11-29 Micron Technology, Inc. Memory devices with cryptographic components
US11218330B2 (en) 2019-03-25 2022-01-04 Micron Technology, Inc. Generating an identity for a computing device using a physical unclonable function
US11323275B2 (en) 2019-03-25 2022-05-03 Micron Technology, Inc. Verification of identity using a secret key
KR102169468B1 (ko) 2019-05-20 2020-10-23 충북대학교 산학협력단 물리적 복제 불가능 함수에 적용 가능한 챌린지 혼합기 및 챌린지 혼합 방법
CN114303341A (zh) 2019-06-07 2022-04-08 俄亥俄州国家创新基金会 使用混合布尔网络作为物理不可克隆函数的系统和方法
US11343108B2 (en) * 2019-06-12 2022-05-24 Arizona Board Of Regents On Behalf Of Northern Arizona University Generation of composite private keys
US11483167B2 (en) * 2019-06-20 2022-10-25 Intel Corporation Method and apparatus to provide memory based physically unclonable functions
US11194978B2 (en) * 2019-07-12 2021-12-07 Northrop Grumman Systems Corporation Combined radio frequency identification (RFID)-based asset management and component authentication
US20210051010A1 (en) * 2019-08-16 2021-02-18 PUFsecurity Corporation Memory Device Providing Data Security
WO2021071691A1 (en) * 2019-10-08 2021-04-15 Cryptography Research, Inc. Encrypted physically unclonable function circuit helper data
US11516028B2 (en) 2019-12-24 2022-11-29 CERA Licensing Limited Temperature sensing physical unclonable function (PUF) authentication system
GB201919297D0 (en) 2019-12-24 2020-02-05 Aronson Bill Temperature sensing physical unclonable function (puf) authenication system
KR102833051B1 (ko) 2020-04-20 2025-07-11 삼성전자주식회사 메모리 모듈 및 적층형 메모리 장치
US12184795B2 (en) * 2020-06-26 2024-12-31 Taiwan Semiconductor Manufacturing Company, Ltd. PUF method and structure
CN112104459B (zh) * 2020-09-10 2023-05-12 国网江苏省电力有限公司信息通信分公司 一种基于信道指纹与辅助数据的密钥生成方法
US11380379B2 (en) 2020-11-02 2022-07-05 Macronix International Co., Ltd. PUF applications in memories
US11604740B2 (en) * 2020-12-01 2023-03-14 Capital One Services, Llc Obfuscating cryptographic material in memory
CN113037488B (zh) * 2021-04-19 2022-07-22 工业信息安全(四川)创新中心有限公司 基于国密密码杂凑算法的保留格式加密方法及解密方法
US12255994B2 (en) * 2021-06-07 2025-03-18 Micron Technology, Inc. Secure data storage with a dynamically generated key
US20230038135A1 (en) * 2021-07-23 2023-02-09 Arizona Board Of Regents On Behalf Of Northern Arizona University Salted hashing method for response-based cryptography
US12166876B2 (en) * 2021-07-30 2024-12-10 Micron Technology, Inc. Embedded hardware security module (HSM)
US20250038999A1 (en) * 2021-12-06 2025-01-30 Cryptography Research, Inc. Physically uncloneable function as secure storage
US12166870B2 (en) * 2022-04-20 2024-12-10 Micron Technology, Inc. Physical unclonable function failure protection and prediction
US12013970B2 (en) 2022-05-16 2024-06-18 Bank Of America Corporation System and method for detecting and obfuscating confidential information in task logs
CN114912154B (zh) * 2022-06-06 2024-03-15 山东大学 一种基于非易失存储器的加密存算一体的实现方法
CN115216861B (zh) * 2022-07-22 2023-07-28 河南大学 基于金属-介电-发光同轴多层复合纳米纤维的puf器件以及采用该器件生成密钥的方法
US20240195635A1 (en) * 2022-12-12 2024-06-13 Intel Corporation Roots of trust in intellectual property (ip) blocks in a system on a chip (soc)
WO2025047724A1 (ja) * 2023-08-31 2025-03-06 ヌヴォトンテクノロジージャパン株式会社 半導体集積回路およびデータ転送方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010055171A1 (en) * 2008-11-17 2010-05-20 Intrinsic-Id B.V. Distributed puf
WO2010100015A1 (en) * 2009-03-06 2010-09-10 Intrinsic Id B.V. System for establishing a cryptographic key depending on a physical system
CN102656588A (zh) * 2009-08-14 2012-09-05 本质Id有限责任公司 具有防篡改和抗老化系统的物理不可克隆函数

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7310706B1 (en) * 2001-06-01 2007-12-18 Mips Technologies, Inc. Random cache line refill
JP2003018143A (ja) * 2001-06-28 2003-01-17 Mitsubishi Electric Corp 情報処理装置
EP1891770B1 (en) 2005-06-01 2011-10-05 Priv Id B.V. Template renewal in helper data systems
US8638931B2 (en) * 2007-10-30 2014-01-28 Spansion Llc Signal descrambling detector
IL187046A0 (en) * 2007-10-30 2008-02-09 Sandisk Il Ltd Memory randomization for protection against side channel attacks
WO2011088074A2 (en) 2010-01-12 2011-07-21 Stc. Unm System and methods for generating unclonable security keys in integrated circuits

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010055171A1 (en) * 2008-11-17 2010-05-20 Intrinsic-Id B.V. Distributed puf
WO2010100015A1 (en) * 2009-03-06 2010-09-10 Intrinsic Id B.V. System for establishing a cryptographic key depending on a physical system
CN102656588A (zh) * 2009-08-14 2012-09-05 本质Id有限责任公司 具有防篡改和抗老化系统的物理不可克隆函数

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CN104704768A (zh) 2015-06-10
KR20150064148A (ko) 2015-06-10
US20150234751A1 (en) 2015-08-20
JP6267207B2 (ja) 2018-01-24
EP2904732B1 (en) 2018-11-28
KR102201062B1 (ko) 2021-01-11
JP2015532549A (ja) 2015-11-09
WO2014053286A1 (en) 2014-04-10
EP2904732A1 (en) 2015-08-12
US9430406B2 (en) 2016-08-30

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