公开(公告)号：US12174979B2

公开(公告)日：2024-12-24

申请号：US17727012

申请日：2022-04-22

Applicant: TruePic Inc.

Inventor： Sherif Hanna ,  Thomas Zeng ,  Chi Shing Chan ,  Matthew Robben

IPC: G06F21/62 ,  H04L9/06 ,  H04L9/30 ,  H04L9/32

Abstract: In general, one aspect disclosed features a media-capture device, comprising: one or more sensors; a hardware processor; and a non-transitory machine-readable storage medium encoded with instructions executable by the hardware processor to perform a method comprising: initiating acquisition of one or more sensor data samples representing analog phenomena captured by the one or more sensors; receiving the one or more sensor data samples; encoding the one or more sensor data samples; generating a to-be-signed data structure comprising at least one of: the one or more encoded sensor data samples, or one or more cryptographic hashes of the one or more encoded sensor data samples; generating a cryptographic hash of the to-be-signed data structure; determining whether a time-stamping server is reachable over a network connection by the media capture device; and configuring a second data structure based on the determination of whether the time-stamping server is reachable.

公开(公告)号：US12231577B2

公开(公告)日：2025-02-18

申请号：US17685877

申请日：2022-03-03

Applicant: TruePic Inc.

Inventor： Sherif Hanna ,  Thomas Zeng ,  Chi Shing Chan ,  Matthew Robben

IPC: H04L9/32 ,  H04L9/08 ,  H04L67/1097

Abstract: A media-capture device initiates acquisition of sensor data samples representing analog phenomena; encodes the samples; generates a to-be-signed data structure comprising the encoded samples and/or cryptographic hashes of the samples; generates a cryptographic hash of the to-be-signed data structure; transmits a time-stamping request to a time-stamping server, the time-stamping request comprises the cryptographic hash of the to-be-signed data structure, wherein the time-stamping server generates a signed time-stamp; generates a digital signature using the to-be-signed data structure, the signed time-stamp, a private cryptographic key, and a signed certificate for the corresponding public cryptographic key; and generates a second data structure comprising the samples, the to-be-signed data structure, and the digital signature.