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1. 发明申请

US20180323968A1 Physically Unclonable Function Circuits and Methods of Performing Key Enrollment in Physically Unclonable Function Circuits 审中-公开
公开(公告)号：US20180323968A1
公开(公告)日：2018-11-08
申请号：US16023626
申请日：2018-06-29
申请人： Samsung Electronics Co., Ltd.
发明人： Yong Ki Lee , Yongsoo Kim , Bohdan Karpinskyy , Yunhyeok Choi
IPC分类号： H04L9/08
CPC分类号： H04L9/088 , H04L9/0866 , H04L2209/046 , H04L2209/34
摘要： A key enrollment method of a physically unclonable function (PUF) circuit including a plurality of PUF cells includes receiving a first level key from PUF cells, performing bit encoding on the first level key using a bit coding table based on Hamming weights of a plurality of bits in the first level key to generate a second level key, storing first helper data associated with the second level key in a non-volatile memory, performing block encoding on the second level key using an error correction code to generate a third level key, and storing second helper data associated with the third level key in the non-volatile memory.

2. 发明授权

US10020933B2 Cryptographic processing device and cryptographic processing method 有权
公开(公告)号：US10020933B2
公开(公告)日：2018-07-10
申请号：US14934740
申请日：2015-11-06
申请人： FUJITSU LIMITED
发明人： Masaya Yasuda , Takeshi Shimoyama , Jun Kogure
IPC分类号： H04L9/00 , H04L29/06 , H04L9/14
CPC分类号： H04L9/008 , H04L9/14 , H04L63/0861 , H04L2209/046 , H04L2209/08
摘要： A memory stores therein first cryptographic information that represents an encrypted polynomial obtained by encrypting a first polynomial that corresponds to a first vector. From a terminal that receives second cryptographic information that represents an encrypted monomial obtained by encrypting a monomial generated by use of a random number, a receiver receives third cryptographic information that represents an encrypted result obtained by encrypting a result of a multiplication of a second polynomial that corresponds to a second vector by the monomial. A processor generates an encrypted polynomial that includes a result of an operation of the first vector and the second vector by use of the first cryptographic information, the third cryptographic information, and information that represents the monomial. An output interface outputs fourth cryptographic information that represents the encrypted polynomial generated by the generator.

3. 发明申请

US20180083769A1 ENCRYPTION/DESCRIPTION METHOD PROTECTED AGAINST SIDE-CHANNEL ATTACKS 审中-公开
公开(公告)号：US20180083769A1
公开(公告)日：2018-03-22
申请号：US15709982
申请日：2017-09-20
申请人： Safran Identity & Security
发明人： Houssem MAGHREBI , Guillaume DABOSVILLE , Emmanuel PROUFF
IPC分类号： H04L9/00 , H04L9/06 , G06F21/62
CPC分类号： H04L9/002 , G06F21/6227 , G06F2207/7242 , H04L9/0618 , H04L9/0625 , H04L2209/046
摘要： The present invention relates to a method for encryption or decryption of a data block from a secret key, wherein the method comprises: generating a first round key kr dependent on the secret key, selecting each of a first mask (−br) and a second mask (−br+1) in a set consisting of a mask of bits all at one and a mask of all zero bits, calculating a first masked key kr′ from the first round key kr and the first mask (−br) as follows: k′=kr⊕(−br) wherein ⊕ is an exclusive disjunction, executing a first encryption round applied to two first data dependent on the data block, by means of the first masked round key kr′ so as to produce two second data, after producing the first masked key kr′, generating a second round key kr+i dependent on the secret key, calculating a second masked key kr+1′ from the second round key kr+i and the second mask (−br+1) as follows: kr+1′ =kr+1 ED (−br+1), calculating two third data Lrbr+1, Rrbr+1 as follows: Rrbr+1=Rrbr⊕(−br−1)⊕(−br) Lrbr+1=Lrbr⊕(−br−1)⊕(−br) and executing a second encryption round following the first encryption round, wherein the second encryption round is applied to the two third data Lrbr+1, Rrbr+1 by means of the second masked round key kr+1′.

4. 发明申请

US20180069694A1 SOFTWARE PROTECTION AGAINST DIFFERENTIAL FAULT ANALYSIS 审中-公开
公开(公告)号：US20180069694A1
公开(公告)日：2018-03-08
申请号：US15257822
申请日：2016-09-06
申请人： NXP B.V.
发明人： Sebastien Riou
IPC分类号： H04L9/00 , G06F21/14 , H04L9/06
CPC分类号： H04L9/004 , G06F21/14 , H04L9/003 , H04L9/005 , H04L9/0618 , H04L9/0631 , H04L2209/046 , H04L2209/12 , H04L2209/125
摘要： An encryption module and method for performing an encryption/decryption process executes two cryptographic operations in parallel in multiple stages. The two cryptographic operations are executed such that different rounds of the two cryptographic operations are performed in parallel by the same instruction or the same finite state machine (FSM) state for hardware implementation.

5. 发明申请

US20180019874A1 Method for putting a first device in secure communication with a second device 审中-公开
公开(公告)号：US20180019874A1
公开(公告)日：2018-01-18
申请号：US15649554
申请日：2017-07-13
申请人： Safran Identity & Security
发明人： Julien BRINGER
IPC分类号： H04L9/32 , H04L9/08 , H04L29/06
CPC分类号： H04L9/3228 , G06F21/34 , H04L9/0841 , H04L9/0861 , H04L9/321 , H04L9/3226 , H04L63/0428 , H04L63/0853 , H04L63/123 , H04L2209/046
摘要： The present invention concerns a method for putting a first device (S) in secure communication with a second device (P), the method comprising steps of: generating (114), by the first device (S), at least one first datum (K) dependent on a private key (SKpcd) specific to the first device (S) and dependent on a public key (PKpicc) specific to the second device (P), generating (116), by the second device (P), at least one second datum (K′) dependent on a private key (SKpicc) specific to the second device (P) associated with the public key (PKpicc) specific to the second device (P), and dependent on a third datum (PK′), the third datum (PK′) being dependent on a public datum (PKpcd, maskedPK) specific to the first device (S), implementing a test (118, 120, 122) verifying whether the first and second data (K,K′) meet a predetermined condition, and putting the first device (S) in secure communication with the second device (P) only if the predetermined condition is met. the method further comprising the following step implemented before the generation (116) of the second datum (K′): generating (110) the third datum (PK′), the third datum (PK′) taking on a value adapted so that the predetermined condition is met only if input data (PIN′) are identical to reference secret data (PIN) associated with the second device (P).

6. 发明授权

US09806881B2 Cryptographic processor, method for implementing a cryptographic processor and key generation circuit 有权
公开(公告)号：US09806881B2
公开(公告)日：2017-10-31
申请号：US14316833
申请日：2014-06-27
申请人： Infineon Technologies AG
发明人： Thomas Kuenemund , Berndt Gammel , Franz Klug
IPC分类号： G06F21/00 , H04L9/06 , H04L9/00 , G06F21/72
CPC分类号： H04L9/0618 , G06F21/72 , H04L9/003 , H04L9/0643 , H04L2209/046
摘要： A cryptographic processor is described comprising a processing circuit configured to perform a round function of an iterated cryptographic algorithm, a controller configured to control the processing circuit to apply a plurality of iterations of the round function on a message to process the message in accordance with the iterated cryptographic algorithm and a transformation circuit configured to transform the input of a second iteration of the round function following a first iteration of the round function of the plurality of iterations and to supply the transformed input as input to the second iteration wherein the transformation circuit is implemented using a circuit camouflage technique.

7. 发明授权

US09774443B2 Computing key-schedules of the AES for use in white boxes 有权
公开(公告)号：US09774443B2
公开(公告)日：2017-09-26
申请号：US14639026
申请日：2015-03-04
申请人： Apple Inc.
发明人： Benoit Chevallier-Mames , Bruno Kindarji , Thomas Icart , Augustin J. Farrugia , Mathieu Ciet
IPC分类号： H04L9/06 , H04L9/00
CPC分类号： H04L9/0631 , H04L9/002 , H04L2209/046 , H04L2209/16 , H04L2209/24 , H04L2209/60
摘要： Some embodiments provide a method for performing a cryptographic process. The method receives first and second cipher keys. The method generates a set of subkeys corresponding to each of the first and second cipher keys. The set of subkeys for the first cipher key is dependent on the first cipher key and the second cipher key. The method performs the cryptographic process by using the generated sets of subkeys.

8. 发明申请

US20170195117A1 ENCRYPTION FUNCTION AND DECRYPTION FUNCTION GENERATING METHOD, ENCRYPTION AND DECRYPTION METHOD AND RELATED APPARATUSES 审中-公开
公开(公告)号：US20170195117A1
公开(公告)日：2017-07-06
申请号：US15462221
申请日：2017-03-17
申请人： HUAWEI INTERNATIONAL PTE. LTD.
发明人： Shuang WU
IPC分类号： H04L9/06 , H04L9/14 , H04L9/08
CPC分类号： H04L9/0631 , G09C1/00 , H04L9/0618 , H04L9/0861 , H04L9/14 , H04L2209/046 , H04L2209/16
摘要： An encryption/decryption function generating method, an encryption/decryption method and related apparatuses, which can ensure the confidentiality of make a key used in a white-box encryption and decryption function when a white-box encryption and decryption function generating algorithm is disclosed. The method includes: receiving a random seed and an original key that are input by a user; generating, according to the original key, a round key required for R-round iterative computing; generating, according to the random seed, an affine expansion mask required for the R-round iterative computing and random disturbance data required for the R-round iterative computing; and generating an encryption/decryption function.

9. 发明申请

US20170116437A1 METHOD FOR PROTECTING DATA AND DATA PROCESSING DEVICE 审中-公开
公开(公告)号：US20170116437A1
公开(公告)日：2017-04-27
申请号：US15333205
申请日：2016-10-25
申请人： Infineon Technologies AG
发明人： Berndt GAMMEL , Stefan HEISS , Markus RAU
IPC分类号： G06F21/64 , G06F21/62
CPC分类号： G06F21/556 , H04L9/003 , H04L9/0894 , H04L2209/046
摘要： According to one embodiment, a method for protecting data is provided comprising receiving a plurality of data symbols, determining a sequence of checksum symbols wherein the checksum symbols are determined to be equal to the checksum symbols of the last iteration of an iterative checksum symbol generation process, wherein the determining of the checksum symbols includes at least one of randomly generating the initial values, randomly determining an order of the data symbols in which the contributions of the data symbols to the checksum symbols are incorporated into the checksum symbols and masking each data symbol and using the masked data symbols as data symbols for determining the checksum symbols and which includes storing at least some of the checksum values as checksum for the data symbols.

10. 发明授权

US09485088B2 Systems and methods for dynamic data masking 有权
标题翻译：用于动态数据屏蔽的系统和方法
公开(公告)号：US09485088B2
公开(公告)日：2016-11-01
申请号：US14529720
申请日：2014-10-31
申请人： Combined Conditional Access Development and Support, LLC
发明人： Michael W. Johnson
IPC分类号： H04L29/06 , H04L9/00 , H04L9/06 , G06F21/72
CPC分类号： H04L9/003 , G06F21/72 , G06F2221/2107 , H04L9/0631 , H04L2209/046
摘要： Systems and methods for dynamic data masking are disclosed. The disclosed methods and systems can be used to dynamically mask data in cryptographic operations, such as advanced encryption standard (AES) operations, data encryption standard (DES) operations or triple DES operations. Specifically, data in cryptographic operations can be covered with unlimited and continuously changing masks. As an example, the Substitution table, key schedule, and state register in AES, or key schedule and selection functions in a DES or triple DES can be covered with unlimited and constantly changing masks. In an aspect, dynamic masking operations can be combined with orbital RAM algorithm and no-operation clocks to make power signature analysis in cryptographic attacks even more difficult.
摘要翻译：公开了用于动态数据屏蔽的系统和方法。所公开的方法和系统可用于动态地屏蔽加密操作中的数据，例如高级加密标准（AES）操作，数据加密标准（DES）操作或三重DES操作。具体来说，密码操作中的数据可以覆盖无限长且不断变化的掩码。作为示例，AES中的替换表，密钥调度和状态寄存器，或DES或三重DES中的密钥调度和选择功能可以覆盖无限且不断变化的掩码。在一个方面，动态屏蔽操作可以与轨道RAM算法和无操作时钟相结合，使加密攻击中的功率签名分析更加困难。

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