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    Reusable fuzzy extractor based on the learning-with-error assumption secure against quantum attacks
    1.
    发明授权
    Reusable fuzzy extractor based on the learning-with-error assumption secure against quantum attacks 有权

    公开(公告)号：US10778423B2

    公开(公告)日：2020-09-15

    申请号：US15980722

    申请日：2018-05-15

    Applicant: HRL Laboratories, LLC

    Inventor： Chongwon Cho ,  Karim El Defrawy ,  Daniel C. Apon ,  Jonathan Katz

    IPC: H04L9/08 ,  H04L9/32 ,  H04L9/00

    Abstract: Described is a system for biometric based security. The system converts biometric data into a cryptographic key using a reusable fuzzy extractor process. The reusable fuzzy extractor process comprises a generation process and a reconstruction process. The generation process takes as input a public parameter and a first biometric input and outputs a public helper string and a first random string. The reconstruction process takes as input a public helper string and a second biometric input and outputs a second random string. The reusable fuzzy extractor process is reusable such that multiple public helper strings do not reveal any information about the first biometric input and the first random string. Secured data is unlocked by applying the cryptographic key for biometric security of access to secured data.

    NON-MALLEABLE OBFUSCATOR FOR SPARSE FUNCTIONS
    2.
    发明申请
    NON-MALLEABLE OBFUSCATOR FOR SPARSE FUNCTIONS 审中-公开

    公开(公告)号：US20170316214A1

    公开(公告)日：2017-11-02

    申请号：US15091541

    申请日：2016-04-05

    Applicant: HRL Laboratories, LLC

    Inventor： Karim El Defrawy ,  Chongwon Cho ,  Daniel C. Apon ,  Jonathan Katz

    IPC: G06F21/60

    CPC classification number: G06F21/60 ,  G06F21/14 ,  H04L2209/16

    Abstract: Described is a system for obfuscating a computer program. Sensitive data of an unprotected computer program is received as input. A random oracle is used to algebraically hide a set of polynomial-size point functions representing the sensitive data. The system outputs a set of obfuscated instructions internally hiding the sensitive data. The set of obfuscated instructions are used to transform the unprotected computer program into a protected, obfuscated computer program that is accepting of the set of polynomial-size point functions. The obfuscated computer program is written to a non-volatile computer-readable medium.

    Anonymous allocation and majority voting in a compromised environment
    3.
    发明授权
    Anonymous allocation and majority voting in a compromised environment 有权

    公开(公告)号：US10887092B2

    公开(公告)日：2021-01-05

    申请号：US16433928

    申请日：2019-06-06

    Applicant: HRL Laboratories, LLC

    Inventor： Joshua W. Baron ,  Karim El Defrawy ,  Aleksey Nogin ,  Chongwon Cho

    IPC: H04L9/08 ,  G06F9/50 ,  H04L29/06

    Abstract: Described is a system for anonymous job allocation and majority voting in a cloud computing environment. The system broadcasts a job to physical nodes, each of the physical nodes having a control operations plane (COP) node and one or more service nodes associated with the COP node. A set of redundant job assignments is distributed to individual COP nodes pursuant to a private job assignment schedule, such that each individual COP node is only aware of its own assignment and corresponding job. The service nodes execute the job assigned to the COP nodes such that the service nodes each complete a task associated with the job and forward an individual result to their associated COP node. A privacy-preserving result checking protocol is performed amongst the COP nodes such that secret shares of a majority result are obtained and the majority result is provided to a client.

    ANONYMOUS ALLOCATION AND MAJORITY VOTING IN A COMPROMISED ENVIRONMENT
    4.
    发明申请
    ANONYMOUS ALLOCATION AND MAJORITY VOTING IN A COMPROMISED ENVIRONMENT 审中-公开

    公开(公告)号：US20200052890A1

    公开(公告)日：2020-02-13

    申请号：US16433928

    申请日：2019-06-06

    Applicant: HRL Laboratories, LLC

    Inventor： Joshua W. Baron ,  Karim El Defrawy ,  Aleksey Nogin ,  Chongwon Cho

    IPC: H04L9/08 ,  H04L29/06 ,  G06F9/50

    Abstract: Described is a system for anonymous job allocation and majority voting in a cloud computing environment. The system broadcasts a job to physical nodes, each of the physical nodes having a control operations plane (COP) node and one or more service nodes associated with the COP node. A set of redundant job assignments is distributed to individual COP nodes pursuant to a private job assignment schedule, such that each individual COP node is only aware of its own assignment and corresponding job. The service nodes execute the job assigned to the COP nodes such that the service nodes each complete a task associated with the job and forward an individual result to their associated COP node. A privacy-preserving result checking protocol is performed amongst the COP nodes such that secret shares of a majority result are obtained and the majority result is provided to a client.

    Non-malleable obfuscator for sparse functions
    5.
    发明授权
    Non-malleable obfuscator for sparse functions 有权

    公开(公告)号：US10198584B2

    公开(公告)日：2019-02-05

    申请号：US15091541

    申请日：2016-04-05

    Applicant: HRL Laboratories, LLC

    Inventor： Karim El Defrawy ,  Chongwon Cho ,  Daniel C. Apon ,  Jonathan Katz

    IPC: G06F21/60 ,  G06F21/14

    Abstract: Described is a system for obfuscating a computer program. Sensitive data of an unprotected computer program is received as input. A random oracle is used to algebraically hide a set of polynomial-size point functions representing the sensitive data. The system outputs a set of obfuscated instructions internally hiding the sensitive data. The set of obfuscated instructions are used to transform the unprotected computer program into a protected, obfuscated computer program that is accepting of the set of polynomial-size point functions. The obfuscated computer program is written to a non-volatile computer-readable medium.

    REUSABLE FUZZY EXTRACTOR BASED ON THE LEARNING-WITH-ERROR ASSUMPTION SECURE AGAINST QUANTUM ATTACKS
    6.
    发明申请
    REUSABLE FUZZY EXTRACTOR BASED ON THE LEARNING-WITH-ERROR ASSUMPTION SECURE AGAINST QUANTUM ATTACKS 审中-公开

    公开(公告)号：US20200145206A1

    公开(公告)日：2020-05-07

    申请号：US15980722

    申请日：2018-05-15

    Applicant: HRL Laboratories, LLC

    Inventor： Chongwon Cho ,  Karim El Defrawy ,  Daniel C. Apon ,  Jonathan Katz

    IPC: H04L9/08 ,  H04L9/32 ,  H04L9/00

    Abstract: Described is a system for biometric based security. The system converts biometric data into a cryptographic key using a reusable fuzzy extractor process. The reusable fuzzy extractor process comprises a generation process and a reconstruction process. The generation process takes as input a public parameter and a first biometric input and outputs a public helper string and a first random string. The reconstruction process takes as input a public helper string and a second biometric input and outputs a second random string. The reusable fuzzy extractor process is reusable such that multiple public helper strings do not reveal any information about the first biometric input and the first random string. Secured data is unlocked by applying the cryptographic key for biometric security of access to secured data.

    One-time obfuscation for polynomial-size ordered binary decision diagrams (POBDDs)
    7.
    发明授权
    One-time obfuscation for polynomial-size ordered binary decision diagrams (POBDDs) 有权

    公开(公告)号：US10509918B1

    公开(公告)日：2019-12-17

    申请号：US15269367

    申请日：2016-09-19

    Applicant: HRL Laboratories, LLC

    Inventor： Chongwon Cho ,  Karim El Defrawy

    IPC: G06F21/12 ,  G06F21/62 ,  H04L9/32

    Abstract: Described is a system for protecting sensitive information that is hardcoded in polynomial-size ordered binary decision diagram (POBDD) form. A software executable represented as a POBDD having sensitive information embedded therein is obfuscated into an obfuscated POBDD. An input query on the obfuscated POBDD is evaluated, and the sensitive information is revealed only if the input query is a correct input. Thus, an adversary is prevented from extracting the sensitive information embedded in the POBDD.

    Reusable fuzzy vault system
    10.
    发明授权
    Reusable fuzzy vault system 有权

    公开(公告)号：US10826686B1

    公开(公告)日：2020-11-03

    申请号：US16183161

    申请日：2018-11-07

    Applicant: HRL Laboratories, LLC

    Inventor： Chongwon Cho ,  Chong Ding

    IPC: H04L9/06 ,  G09C1/00

    Abstract: Described is a system for biometric based security. The system applies a reusable fuzzy vault (RFV) process to protect secret information. The RFV process comprises a locking algorithm and an unlocking algorithm. The locking algorithm takes as input a fuzzy string m generated from readings of biometrics and secret information sk to be protected, The locking algorithm outputs a public string vault and a hash value h of sk. The unlocking algorithm takes as input a public string vault and a fuzzy string m′, and outputs a string sk′ if fuzzy string m′ is sufficiently close to fuzzy string m. The unlocking algorithm further computes a hash value h′ of sk′ and compares it with h. The system allows access to the secret information sk when h′ is equivalent to h.

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