4 ms·

Gaming consoles have encrypted RAM for more than a decade.

• delroth 8y ago
  You say "gaming consoles", but really I think I've only seen it in the Xbox 360. Was it deployed anywhere else that I missed?
  • dcow 8y ago
    Didn’t the Wii do something similar? Also it’s not just “gaming consoles”: https://www.cl.cam.ac.uk/~rja14/tamper.html https://www.cl.cam.ac.uk/~rja14/tamper.html
    • dfox 8y ago
      Wii does not do RAM encryption (which is somewhat understandable given the fact that the RAM is mostly embedded 1T-SRAM that is not directly accessible anyway). As far as I know the only two systems that use cryptographically meaningful memory encryption are Xbox 360 and zArchitecture mainframes. Various secure crypto processors usually have some support for external "encrypted" SRAM, but as this typically involves microcontroller platforms and byte/word-wide accesses to said memory the implementation in the best case boils down to CTR mode (usually of some secret semi-proprietary algorithm of questionable cryptographic qualities) without IV or any authentication.
  • dijit 8y ago
    PS4 and XB One both have "secret" memory areas which I think are encrypted. We use these features to store small amounts of very sensitive data, key material for example.