How do apps like Spotify prevent the files of downloaded content from being found, duplicated, and illegally distributed?
In: Technology
The content is obfuscated and the code to decrypt it is partly held on their private servers and cached in a trusted privacy module for offline decryption.
This module is essentially a secure chip on your system that doesn’t trust your device, only the specific process that is properly signed by Spotify.
So to decode the file, you have to either be trusted by the TPM, or be really really good at factoring large numbers.
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