US 12,093,411 B2
System and media recording device with secured encryption
Pierre Racz, Montreal (CA); and Frédéric Rioux, Montreal (CA)
Filed by GENETEC INC., St-Laurent (CA)
Filed on Jul. 15, 2022, as Appl. No. 17/865,584.
Application 17/865,584 is a continuation of application No. 16/422,523, filed on May 24, 2019, granted, now 11,423,161.
Claims priority of provisional application 62/676,970, filed on May 26, 2018.
Claims priority of provisional application 62/676,967, filed on May 26, 2018.
Prior Publication US 2023/0059826 A1, Feb. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 21/62 (2013.01); G06F 21/60 (2013.01); G06Q 50/18 (2012.01); G06Q 50/26 (2024.01); H04L 9/06 (2006.01); H04L 9/08 (2006.01); H04L 9/14 (2006.01); H04L 9/40 (2022.01); H04W 12/033 (2021.01); H04N 7/18 (2006.01)
CPC G06F 21/62 (2013.01) [G06F 21/602 (2013.01); G06Q 50/18 (2013.01); G06Q 50/26 (2013.01); H04L 9/0631 (2013.01); H04L 9/0825 (2013.01); H04L 9/0869 (2013.01); H04L 9/14 (2013.01); H04L 63/102 (2013.01); H04W 12/033 (2021.01); G06Q 2220/10 (2013.01); H04L 2209/80 (2013.01); H04N 7/185 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A body-worn device for maintaining a chain of custody for media content, comprising:
a hardware recording unit producing unencrypted media content;
a symmetric cryptography engine producing encrypted media content by encrypting the unencrypted media content using a symmetric encryption key;
an asymmetric cryptography engine performing a cryptographic operation to secure the symmetric encryption key using a first asymmetric encryption key;
an interface module for:
sharing, with a media server, an encrypted version of the symmetric encryption key and a first public encryption key of a first public-private key pair; and
transmitting the encrypted media content to the media server; and
a signature module generating a signature value for a portion of the media content, the asymmetric cryptography engine:
producing a digital signature for the portion of the media content by signing the signature value with a private encryption key associated with the device, and
storing the digital signature within a memory of the device;
the body-worn device preventing external access to the unencrypted media and to the symmetric encryption key.