0000000000326412

AUTHOR

Mohammad Sadeq Dousti

showing 2 related works from this author

Neural Networks, Inside Out: Solving for Inputs Given Parameters (A Preliminary Investigation)

2021

Artificial neural network (ANN) is a supervised learning algorithm, where parameters are learned by several back-and-forth iterations of passing the inputs through the network, comparing the output with the expected labels, and correcting the parameters. Inspired by a recent work of Boer and Kramer (2020), we investigate a different problem: Suppose an observer can view how the ANN parameters evolve over many iterations, but the dataset is oblivious to him. For instance, this can be an adversary eavesdropping on a multi-party computation of an ANN parameters (where intermediate parameters are leaked). Can he form a system of equations, and solve it to recover the dataset?

FOS: Computer and information sciencesComputer Science - Machine LearningComputingMethodologies_PATTERNRECOGNITIONComputer Science - Cryptography and SecurityComputer Science::Neural and Evolutionary ComputationFOS: MathematicsNumerical Analysis (math.NA)Mathematics - Numerical AnalysisCryptography and Security (cs.CR)Computer Science::DatabasesMachine Learning (cs.LG)Computer Science::Cryptography and Security
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Moderated Redactable Blockchains: A Definitional Framework with an Efficient Construct

2020

Blockchain is a multiparty protocol to reach agreement on the order of events, and to record them consistently and immutably without centralized trust. In some cases, however, the blockchain can benefit from some controlled mutability. Examples include removing private information or unlawful content, and correcting protocol vulnerabilities which would otherwise require a hard fork. Two approaches to control the mutability are: moderation, where one or more designated administrators can use their private keys to approve a redaction, and voting, where miners can vote to endorse a suggested redaction. In this paper, we first present several attacks against existing redactable blockchain solut…

020203 distributed computingComputer sciencemedia_common.quotation_subject02 engineering and technologyConstruct (python library)RedactionComputer securitycomputer.software_genreDigital signatureOrder (exchange)020204 information systemsVoting0202 electrical engineering electronic engineering information engineeringFork (file system)Protocol (object-oriented programming)computerPrivate information retrievalmedia_common
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