公开(公告)号：US20230376813A1

公开(公告)日：2023-11-23

申请号：US17748948

申请日：2022-05-19

Applicant: Seagate Technology LLC

Inventor： Vipin Singh SEHRAWAT

IPC: G06N10/20 ,  G06F7/58

CPC classification number: G06N10/20 ,  G06F7/588

Abstract: Generation of randomness (e.g., a random value) using a protocol based on quantum weak coin flipping amongst a plurality of participating parties. The protocol allows computation of the exact initial bias and may include determining a number of rounds of exchange in a quantum weak coin flipping algorithm to achieve a predetermined maximum bias value. In turn, quantum weak coin flipping may be performed in a pair-wise fashion amongst all of the plurality of participating parties. A result of each pair-wise quantum weak coin flipping instance may be shared with another of the plurality of participating parties other than the parties participating in generating the result. In turn, the results of each pair-wise quantum weak coin flipping instance may be combined to provide a random value that may be used as a cryptographic key or as a seed to some cryptographic function.

公开(公告)号：US20230095443A1

公开(公告)日：2023-03-30

申请号：US17489592

申请日：2021-09-29

Applicant: Seagate Technology LLC

Inventor： Foo Yee YEO ,  Nolan MIRANDA ,  Vipin Singh SEHRAWAT

IPC: H04L9/08 ,  H04L9/00 ,  H04L9/06

Abstract: A function secret sharing (FSS) scheme that facilitates multiple evaluations of a secret function. The FSS scheme includes a function share based on a secret function and at least one key of a key-homomorphic pseudo random function (PRF). At least one key and a function share are provided to each party in the FSS scheme. In turn, each party may generate an output share comprising a function share output evaluated at a function input and a masking component generated based on the at least one key in relation to the key-homomorphic PRF. In turn, the output shares of each participating party may be combined to evaluate the secret function. The FSS scheme facilitates multiple evaluations of the secret function without leaking information regarding the secret function.

公开(公告)号：US20220329410A1

公开(公告)日：2022-10-13

申请号：US17219496

申请日：2021-03-31

Applicant: Seagate Technology LLC

Inventor： Foo Yee YEO ,  Vipin Singh SEHRAWAT

IPC: H04L9/08 ,  H04L9/06

Abstract: A secret sharing scheme with yes and no shares and having a hidden access structure. The secret sharing scheme may include share generation in which yes shares and no shares are generated for, and distributed to, each party in the secret sharing scheme. In turn, upon an attempt to reconstruct the secret, participants in the reconstruction each provide a share, which is unknown to be a yes share or a no share to the other participants. The secret is only reconstructable if the shares used in the reconstruction include yes shares of a minimal authorized subset of the parties. However, prior to secret reconstruction, the access structure remains hidden and the participants in a reconstruction are unaware of the character of the shares provided by other participants in the reconstruction attempt.

公开(公告)号：US20220255720A1

公开(公告)日：2022-08-11

申请号：US17164609

申请日：2021-02-01

Applicant: Seagate Technology LLC

Inventor： Vipin Singh SEHRAWAT ,  Foo Yee YEO

IPC: H04L9/00 ,  H04L9/30 ,  H04L9/14 ,  H04L9/06

Abstract: A homomorphic encryption system receives a ciphertext output of an arithmetic evaluation function. The arithmetic evaluation function is performed on a ciphertext input homomorphically encrypted from a plaintext input using a set-system including sets having an intersection property. The ciphertext output is decrypted using a summation of two or more noise-canceling party identifiers of two or more authorized parties, wherein the intersection property of the sets cancels out errors generated during the decrypting operation for the two or more authorized parties.