Modify aggregation workflows to support multiple enclave frameworks

[shukpa]

Is your feature request related to a problem? Please describe.
Support multiple enclave messaging frameworls

Describe the solution you'd like
Currently only R3 Conclave is supported for messaging and runtime for enclaves. We need to create a layer of abstraction over Conclave specific primitives within our workflows. This will allow us to plug into the enclave messaging layer and runtimes (Conclave, Anjuna).

Edit 23/06/2022
After research on several frameworks we have decieded to build the first non-Conclave integration with Anjuna.io

[hiteshvpatel256]

As it has been decided to move towards "Enarx" from "Conclave" as confidential computing component, the primary things needed to be considered as below.
-> Some plug-in kind of interface needs to be developed between corda network & TEE(Trusted Execution Environment)
-> Rust & WASM(web-assembly Runtime) technologies needs to be added into whole tech-stack of product. Majority of the source is available as Rust implementation.
-> The core benefit of using Enarx is to support both "SEV" & "SGX" hardwares as TEE without having different implementation for both different interface. Both type of TEE could be supported internally into ENARX by "shim" management.
-> Things to figure out is Enarx available as production ready or Still in Beta mode.
-> Also needs some research about a way to bind web-assembly runtime to different modules created with different technologies like Java, Go, C++.
-> As of now Enarx docs suggest testing of "keeps"(Enclave) is available, but procedure to achieve that testing implementation is not clear. So need to work on that to find out.

[hiteshvpatel256]

"Wasmtime" needs to studied thoroughly to take advantage of Enarx platform & it's components.

[hiteshvpatel256]

Moving toward "CCF" (https://github.com/microsoft/CCF) to investigate confidential computing part and resolve current use case problem.

[hiteshvpatel256]

Enarx Updates:
Able to run sample application from WASMTIME. Now need to find out reason for not loading assembly module(Sample applicatin) into ENARX Keeps.
Note: WASMTIME is runtime where standalone assembly script can be executed as application. we can build this asembly script by converting regular code written(into java, c++, rust, go) with help of wasm32-wasi tool
Need to find out weather Enarx load assembly script with WASMTIME, if not then what similar execution environment it uses to load assembly module

[hiteshvpatel256]

Apache Teaclave Updates:

• Able to run teaclave services in simulation environment. Service side architecture is still unknown & log management module for running services needs to be identified further.
• Sample application works fine with teaclave platform. Also client side SDK works fine & manageable with api given into main repo.
• Teaclave front-end service & client service communicate with RPC channel. No explanation provided in docs for working of teaclave services & data flow between those services.
• Attestation services will only work with SGX platform, but current experience with AZURE cloud VM instance deployment points to broken build process because of unresolved dependencies.

[hiteshvpatel256]

Enarx Updates:

• Not generating build with steps given in documentation for Azure SGX VM instance. Giving some sort of compile error related to wasmdlr files.
• With local machine, it generates build but not loading KVM module for simulation mode.