Infrastructure is provided that allows the platform owner/administrator to designate identity modulus signatures of keys that control the following functionality: We've attempted to address this problem with a patch to the proposed driver that adds cryptographic initialization policy management to the driver, to the extent that such policy can be implemented on a platform with Flexible Launch Control. Since EDMM allows the dynamic loading and execution of code, an adversary can simply load a bootstrap enclave that can setup a confidential communications link to a command and control server and then download, over an encrypted channel, any adversarial code that is desired. The potential security implications of this are well understood and are particularly problematic on SGX2 platforms that implement Enclave Dynamic Memory Management (EDMM). any adversary that can defeat discretionary access controls can load and run enclave based code. This is problematic from a security perspective in that a full hardware chain of trust cannot be established, ie. All of this effectively leaves the notion of 'launch control' to be the discretionary access controls that are applied to the SGX driver device node. The driver computes the identity modulus signature of the enclave signing key and sets the launch control registers to that value. The driver is instead configured to initialize any enclave that is handed to it. This denies the ability to even load a launch enclave on Linux. In addition to the inability to pass a launch token into the kernel, the driver will refuse an attempt to initialize an enclave with the EINITTOKEN_KEY attribute. Without the ability to pass a launch token into the kernel, a launch enclave has little or no value. In fact, the ability to pass an initialization token (EINITTOKEN) to the ioctl system call that carries out enclave initialization has been specifically removed. We are deeply involved with this issue so some background and clarifications for the benefit of everyone targeting SGX based solutions on the Linux platform, particularly groups that are interested in third party launch control.Īt the current time, the driver that is proposed to become the mainstream Linux driver has no support for launch control. The issue surrounding launch control, at least on Linux, is a bit complex at this point. I have searched, but only found snippets and thought maybe someone might already be doing this as it seems to me to be a common sense usage of this unit in conjuntion with Ableton Live.Hi, I hope the week has gone well for everyone, despite all of the ongoing world events. Of course, the exact configuration of the unit for my ' Mix ' sessions will develop over time. The idea being that I can then press a button, or ' Focus ' on the Compressor and have control using the knobs / sliders.Įach time I save my set and then load up another etc, I have to remap.Ĭan someone point me in a direction of something that enables the use of the Novation XL unit in this manner without having to reload each time. Set to user mode I can midi map each of 24 knobs to reflect the 8 EQ options, in EQ8, each row for frequency, gain and Q. Im thinking of things such as EQ and Compression for starters but it could also be used to control the EQ parameters of any plugins, iZotope etc. I hope that it will also be easier, for example, in trying to find the ' sweet spot ' when EQ'ing a track / clip, Vocal or Guitar. I want to use a controller as opposed to click and drag with the mouse. I got this as I want a more hands on control of various tools used during a mix down stage. I recently purchased a Novation Launch Control XL controller for Ableton live.
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