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The api _cpri__AESDecryptCFB is expected to support in-place decryption, which the previous implementation did not support (i.e. part of the input was was written to prior to being read). Switch to CTR mode to ECB mode in order to support in-place decrypt. BRANCH=none BUG=chrome-os-partner:43025,chrome-os-partner:47524 TEST=corresponding TPM2 test suite command passes Change-Id: I8a096bdab7a1ca130a07d992c9fce3fc19016e17 Signed-off-by: nagendra modadugu <ngm@google.com> Reviewed-on: https://chromium-review.googlesource.com/328761 Commit-Ready: Nagendra Modadugu <ngm@google.com> Tested-by: Nagendra Modadugu <ngm@google.com> Reviewed-by: Marius Schilder <mschilder@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly