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Decrypt Samsung Tv Recordings

  • gooddealbmunste197
  • Aug 13, 2023
  • 3 min read


I have a Samsung Smart TV that for each recording done using its built-in recorder produces 6 different files with the following extensions each: .cip, .inf, .mdb, .mta, .srf, and .ss. The .srf file is by far the largest in most (if not all) recordings, so I assume that's the one that actually contains the video. It can be multiple gigabytes, whereas the others at most are a few megabytes.


drmdecrypt is a tool to decrypt PVR recordings from Samsung TVs into standard transport stream format. There are multiple similar versions out there based on code from SamyGO and various people but they are all either slow, Windows specific, full of bugs or even all together.




Decrypt Samsung Tv Recordings



DeSTRoi - Decrypt Samsung TV Recordings is a free program that lets you download movie files directly from your TV by FTP and decrypt them. The program has support for all Samsung video formats such as SRF and TS. You can also use and anonymous FTP connection.


For these we need root access to the TV firmware in order to read the encryption key generated from the TV before we can decrypt our recordings. You will find some tools including tools for Linux/Ubuntu from the SamyGo modified firmware support forums.


The Samsung LED TV formatted disks are formatted as a XFS filesystem and you have to be able to mount it.It can be done on a Mac (search for fuse-xfs) and on Linux. I will explain the Linux version as I have not yet founda decryption tool for the mac.


drmdecrypt is a tool to decrypt PVR recordings from Samsung TVsinto standard transport stream format. There are multiple similarversions out there based on code from SamyGO and various peoplebut they are all either slow, Windows specific, full of bugs oreven all together.


To prevent Samsung Smart TV users from sharing copyrighted content, the TVs encrypt videos saved as SRF files. This prevents users who do not have a Samsung Smart TV, or another way to decrypt SRF files, from playing the files.


SRF files are meant to be opened and played on Samsung Smart TVs. However, you can also use the DeSTRoi - Decrypt Samsung TV Recordings program (Windows) to decrypt SRF files and transfer them from a TV to your PC.


If Samsung TVs belonging to actual customers get blocked by mistake, full functionality can be restored within 48 hours after sending proof of purchase and a valid TV license to the Samsung retailer or the serv.manager@samsung.com email.


The most interesting function - as we want to decrypt the firmware - would be `getEncryptedItemsAESPassphrase`. That function does not seem to contain any logic worth mentioning, though. We can, however, check the functions around the place where `getEncryptedItemsAESPassphrase` is called, as they are likely to be related. In there we can see the following:


As we can see, the AES passphrase used is decrypted using a secure enclave (TrustZone). Unless device access is gained - enabling us to use the shell - the firmware passphrase (and thus the firmware itself) cannot be easily decrypted.


as far as I am concerned, the recordings are bound to your TV. If you unplug the HDD and plug it into another TV of the same model, you can't play the videos (it is the same for my dads Samsung TV and my Philips TV).


No, it doesn't work like that. It isn't Sony decrypting, it's the algorithm. And the algorithm to be 100% (well.. ideally) safe needs to be able to decrypt only on the platform that made the encryption. It's the encrypting side owning the (highly hidden) encryption key, and once you replace the motherboard (or even just after resetting to factory settings) that key has gone, getting replaced with a newly generated (I think randomly) one.


For my proposed app, the encrypted Verizon FiOS TV signal would come into the home, bypass a Verizon set-top box (STB), and be decrypted by a CableCARD in a networked TV tuner such as the Silicon Dust HDHomerun Prime. The Verizon FiOS app on the Xbox One would communicate over Ethernet directly to the HDHomerun Prime TV tuner to expose all channels the user subscribes in the Xbox OneGuide. With this setup, any Xbox One owner can reduce their OPEX with a single CAPEX for hardware that will quickly pay for itself.


The Other is that said recordings are encoded or encrypted so I can only playback on this TV, not the one in the bedroom which is a Samsung nor my PC. Is there a hack to get round this? Or a file converter to enable me to change to a file that is playable via flash or via shared network?


Google collected a trove of students' personal information, including dataon their physical locations, websites they visited, YouTube videos theywatched and their voice recordings, Hector Balderas, New Mexico's attorneygeneral, said in a federal lawsuit. 2ff7e9595c


 
 
 

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