Theoretical Foundations for Mobile Target Defense: Proactive Secret Sharing and Secure Multiparty Computation

2018 ◽  
pp. 470-486
Author(s):  
Karim Eldefrawy ◽  
Rafail Ostrovsky ◽  
Moti Yung
Keyword(s):  
Secret Sharing ◽  
Secure Multiparty Computation ◽  
Multiparty Computation ◽  
Proactive Secret Sharing ◽  
Mobile Target ◽  
Theoretical Foundations

Secure Multiparty Computation and Secret Sharing

2015 ◽  
Author(s):  
Ronald Cramer ◽  
Ivan Bjerre Damgard ◽  
Jesper Buus Nielsen
Keyword(s):  
Secret Sharing ◽  
Secure Multiparty Computation ◽  
Multiparty Computation

scholarly journals On Codes, Matroids, and Secure Multiparty Computation From Linear Secret-Sharing Schemes

2008 ◽  
Vol 54 (6) ◽  
pp. 2644-2657 ◽  
Author(s):  
Ronald Cramer ◽  
Vanesa Daza ◽  
Ignacio Gracia ◽  
Jorge JimÉnez Urroz ◽  
Gregor Leander ◽  
...  
Keyword(s):  
Secret Sharing ◽  
Secure Multiparty Computation ◽  
Secret Sharing Schemes ◽  
Multiparty Computation

scholarly journals Assessment of Two Privacy Preserving Authentication Methods Using Secure Multiparty Computation Based on Secret Sharing

Symmetry ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 894
Author(s):  
Diana-Elena Fălămaş ◽  
Kinga Marton ◽  
Alin Suciu
Keyword(s):  
Secret Sharing ◽  
Distributed Databases ◽  
Secure Multiparty Computation ◽  
Communication Cost ◽  
Information Storage ◽  
Multiparty Computation ◽  
Sensitive Data ◽  
Biometric Data ◽  
Secure Information ◽  
Shamir Secret Sharing

Secure authentication is an essential mechanism required by the vast majority of computer systems and various applications in order to establish user identity. Credentials such as passwords and biometric data should be protected against theft, as user impersonation can have serious consequences. Some practices widely used in order to make authentication more secure include storing password hashes in databases and processing biometric data under encryption. In this paper, we propose a system for both password-based and iris-based authentication that uses secure multiparty computation (SMPC) protocols and Shamir secret sharing. The system allows secure information storage in distributed databases and sensitive data is never revealed in plaintext during the authentication process. The communication between different components of the system is secured using both symmetric and asymmetric cryptographic primitives. The efficiency of the used protocols is evaluated along with two SMPC specific metrics: The number of communication rounds and the communication cost. According to our results, SMPC based on secret sharing can be successfully integrated in real-word authentication systems and the communication cost has an important impact on the performance of the SMPC protocols.

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