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AmazonGranted patentSecurity & privacyInterest 6/10

Amazon patents video check that stops tampered streams

Amazon describes a system where a video provider signs each part of a video file with a secret code before sending it to third-party servers. The video player gets a matching public code from the provider over a secure link and uses it to verify that the video has not been changed during delivery. If the check fails, the player stops playing the video.

Why it mattersThis helps ensure that the video you watch is exactly what the provider sent, even if it travels through untrusted third-party networks.

In the filing’s own words

A processing service of a provider network may protect media content from being tampered with when it is transmitted from the provider network/transcoder to untrusted networks (e.g., third-party networks/CDNs) and to a media player. The processing service (e.g., the transcoder) generates a public and a private key. The service uses the private key to digitally sign content portions (e.g., video frames) before distribution to untrusted CDNs. The provider network creates a manifest that includes the public key. To play the media content, the media player obtains a manifest that includes the public key (via a secure/trusted connection with the provider network). The media player may then obtain the media content from an untrusted edge server/CDN and validate it using the public key that was separately obtained from the manifest (to verify the content was not tampered with).

What exactly they claim (claim 1)

1. A system, comprising: one or more processors; and one or more memories, wherein the one or more memories have stored thereon instructions, which when executed by the one or more processors, cause the one or more processors to implement a media player, wherein the media player is configured to: receive a manifest from a provider network, wherein the manifest comprises at least a public key and an indication of a location at an edge network from which the media content can be retrieved, and wherein the manifest is received by the media player over a secure connection with the provider network in accordance with a security communication protocol; retrieve at least some of the media content from the location, wherein the retrieved media content comprises a plurality of content portions of the media content; play a content portion of the plurality of content portions of the media content; subsequent to the playing of the content portion, use the public key received by the media player from the provider network to determine whether a digital signature of the content portion is valid; and based on a determination that the digital signature of the content portion is valid, play one or more additional content portions of the plurality of content portions of the media content.

Facts

Company
Amazon (Amazon Technologies, Inc.)
Official title
Protecting media content integrity across untrusted networks
Patent number
US12750538B2
Application number
18817115
Filed
Aug 27, 2024
Granted
Sep 29, 2026
Inventors
13
Claims
20

Classified under

H04N 21/2347 Electricity & electronicsH04L 9/0643 Electricity & electronicsH04L 9/0825 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.