Comment

Comment on [PlayStation] [DRM] Licenses now requires an online check-in every 30 days.

I thought such a check was standard already. It’s for digital purchases only, which you need internet to download anyway. Only 30 days might be too short in some cases. Steam on PC has a similar check, but I think its longer than 30 days.

I assume they are hardening the digital purchases, as they move more and more to digital (only). Because otherwise there was no need to do this after 6 years into the lifecycle of the console.

source

Sort:hotnew top

artwork@lemmy.world ⁨2⁩ ⁨weeks⁩ ago
I am not sure nowadays about the limit from Steam/Valve side.

Cached license ownership Steam App tickets data is indeed stored locally, including a property apptickets in encrypted state in file …/Steam/userdata/${steamUserId}/config/localconfig.vdf.

The data is to be eventually mapped to the interface EAuthSessionResponse which may be used to implement the value for k_EAuthSessionResponseNoLicenseOrExpired.

k_EAuthSessionResponseNoLicenseOrExpired - 2 - The user doesn’t have a license for this App ID or the ticket has expired.

Source [web-archive]

This data is normally used by the Steam client only, and is available for explicit requests via Steam API, including launchers.

-–

# App Ownership Ticket

This part of the ticket is signed by Steam and is valid for a longer period of time, usually a couple weeks. It proves to your peer that you own the game you’re trying to authenticate for. It can be reused many times with different GC tokens.

It contains things like your SteamID, the ID of the app it was assigned for, your external and internal IP addresses, the times when the ticket was generated and when it expires, the licenses you own which grant you this game, any DLC you own, and a signature.

Since this part of the ticket is signed, has an expiration date, and can be reused, there’s no need to send it to Steam for validation, so it’s validated locally.

Source: github.com/DoctorMcKay/…/Steam-App-Auth

If I do recall it correctly, previously, the Steam client debug console command licenses_print returned local “expiration times” for next checks with the remote API (as “handshakes”) within the 14 days limit.

The encrypted tickets data is considered signed, and I do recall reading about its signed “expires at” was set to 14 or maximum 30 days only. The 14 days matches out with the discounting limit:

Launch discounts start once your title is released on Steam and can be staged to run for between 7 and 14 days, ending at 10am Pacific on the applicable day…
Source [web-archive]

-–

Steam is an online service offered by Valve.
Source

-–

This is not actually true - Offline Mode is designed to be indefinite… Looks like Kotaku decided to link to this post from six months ago, and every game blog has copy-pasted it. The “two week” timeout issue has been fixed for months now, along with several other bugs. We’re still working on improvements, and you might catch them if you read the patch notes carefully, but we don’t bother to post on the forums every time we fix something (maybe out of fear that it will get posted as front-page news six months later?).
Source [web-archive]

Yet, still, I wish I had more time… to investigate it myself. It feels like the signature time depends on the title. considering the following article:

I constantly see people unknowingly spreading misinformation about how Steam Offline Mode operates and most of it dates back to 2004…
This post exists to explain how there is no time limit on Steam offline mode and Steam isn’t going to prevent you from preserving your games forever, assuming you take steps to back up your installation (which you should do anyway for any digitally downloaded games.)

Backup your Steam install folder, make one registry key, and you can play your games offline forever on any computer.
Source: redd.it/xt3xec (Steam Offline Mode has no time limit: an explanation…) [2022-10-01]

source
- thingsiplay@lemmy.ml ⁨2⁩ ⁨weeks⁩ ago
  Thanks for all the sources, very appreciate this.
  
  As for the “expiration date”, Valve made some changes a while ago. And there were misinformation, but also because Valve changed this and did not explain it well to the public. I think the 14 days limit was treated as a bug later, but can’t find the source. And I know for a fact that its not 14 days, as last year in summer I had no internet for longer than a month if I am not mistaken. And some games were still functional, after 30 days. That is the Steam DRM only, so if a game has its own DRM and other checks, then that is a separate issue.
  
  At the very latest with Steam Deck they had to do all of these changes, because using it offline for longer period of time is a totally normal thing to do on a handheld. Sadly its not very clear documented and communicated by Valve as far as I know, at least to the public for non developers.
  
  I already researched it last year and did not come to a definitive conclusion. I only know that there were changes in recent years, that’s why I cannot trust old sources. Actually someone has to do a ticket and ask Valve employee directly. Someday I do this if there is still no answer.
  
  source