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1. 发明公开

US20240329936A1 SECURE MULTI-PARTY COMPUTATIONS 审中-公开
公开(公告)号：US20240329936A1
公开(公告)日：2024-10-03
申请号：US18710933
申请日：2022-11-23
申请人： SEDICII INNOVATIONS LTD.
发明人： Miguel DE VEGA RODRIGO
IPC分类号： G06F7/58 , G06F7/523
CPC分类号： G06F7/588 , G06F7/523
摘要： A secure multiparty computation method permits the computation of an arithmetic function ƒ which can be expressed as the addition of A groups of multiplications of a set S of private input secrets {s0, s1, . . . , ss-1}. Dealer nodes holding the secrets are provided with a base blinding factor ρa whose inverse is the sum of a set of pseudorandom numbers each of which is associated with a respective computing node and is not shared with other computing nodes. Each dealer node is further provided with an exponent blinding factor λa,m specific to the secret being contributed, where all of the exponent blinding factors sum to unity. The dealer nodes share with the computing nodes the product of the secrets with the base blinding factor raised to the exponent blinding factor. Each computing nodes can independently and without sharing computations, generate from the product of shares it receives from the dealer nodes a result share. Summing the result shares provides the result of the computation. In this way a sum of products can be computed by the computing nodes without requiring any messages to pass between the computing nodes during the computation.

2. 发明公开

US20240007273A1 Messageless Secure Multi-Party Computations with Passive and Active Adversaries 审中-公开
公开(公告)号：US20240007273A1
公开(公告)日：2024-01-04
申请号：US18217048
申请日：2023-06-30
申请人： SEDICII INNOVATIONS LTD.
发明人： Miguel DE VEGA RODRIGO
IPC分类号： H04L9/08
CPC分类号： H04L9/085 , H04L2209/46
摘要： Disclosed are methods and systems for calculating an arithmetic function expressed as addition of groups of multiplications of a set of private input secrets held by dealer nodes. Random exponent blinding factors are generated, and each computing node receives polynomial shares from each exponent blinding factor and a polynomial share and a public generator from the multiplicative group of integers modulo a prime number. The indexing integers are partitioned among the computing nodes, and each computing node computes a set of shares from the polynomial shares then sent to the dealer nodes which reconstruct the corresponding dealer blinding factor, and use it to create and send a particle to the computing nodes. The computing nodes then calculate from the received particles a result share of a polynomial which, when combined by a result node, allow the evaluation of complete polynomial which includes the result of the arithmetic function.

3. 发明公开

EP4367829A1 MESSAGELESS SECURE MULTI-PARTY COMPUTATIONS WITH PASSIVE AND ACTIVE ADVERSARIES 审中-实审
公开(公告)号：EP4367829A1
公开(公告)日：2024-05-15
申请号：EP23738667.7
申请日：2023-07-03
申请人： Sedicii Innovations Ltd.
发明人： DE VEGA RODRIGO, Miguel
IPC分类号： H04L9/08
CPC分类号： H04L9/085 , H04L2209/4620130101

4. 发明授权

EP4236193B1 INNER PRODUCTS WITH SECURE MULTI-PARTY COMPUTATIONS 有权
公开(公告)号：EP4236193B1
公开(公告)日：2024-08-07
申请号：EP22159312.2
申请日：2022-02-28
IPC分类号： H04L9/08
CPC分类号： H04L9/0894 , H04L2209/4620130101 , H04L2209/0420130101

5. 发明授权

EP3754898B1 IMPROVEMENTS IN MULTI-PARTY COMPUTATIONS 有权
公开(公告)号：EP3754898B1
公开(公告)日：2023-07-26
申请号：EP19020392.7
申请日：2019-06-19
发明人： DE Vega Rodrigo, Miguel , Leslie, Rob , Díaz, Néstor Álvarez , Toledo, Sergio Medina
IPC分类号： H04L9/00 , H04L9/32

6. 发明授权

EP4184858B1 SECURE MULTI-PARTY COMPUTATIONS WITHOUT ONLINE COMMUNICATION 有权
公开(公告)号：EP4184858B1
公开(公告)日：2024-05-29
申请号：EP21210077.0
申请日：2021-11-23
IPC分类号： H04L9/08
CPC分类号： H04L9/0894 , H04L2209/4620130101 , H04L9/085

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