cli: allow users to use a custom nonce for SGX quote verification using --nonce flag

[daniel-weisse]

Proposed changes

• Add a new flag to the CLI: --nonce

  • Takes a string as argument which, if set, is used by the Coordinator to generate to generate an SGX quote
    • If not set the Coordinator creates a quote over sha256(rootCert) (default and current behvaior)
    • If set the Coordinator creates a quote over sha256(rootCert+nonce)
    • The Coordinator uses the literal byte value of the (ASCII) string nonce. In the future we may add options to supply a a nonce hex or base64 encoded to allow for a wider range of nonce values

• Add a new endpoint to the Coordinators REST API: /api/v2/quote

  • This endpoint behaves the same as /quote, but additionally allows sending a nonce as part of the request query:

    https://<host>:<port>/api/v2/quote?nonce=<base64-url-encoded-nonce>
    

  • If a nonce is set, the Coordinator will generate a new quote over said nonce instead of using the stored quote generated at start up

• Fix for the CI generating docs which claimed the default Coordinator cert path as /github/home/.config/marblerun/coordinator-cert.pem

  • The CI now generates docs which use $HOME/.config as a placeholder for the users actual config dir

Additional info

• AB#4030

[netlify]

✅ Deploy Preview for marblerun-docs canceled.

Name	Link
🔨 Latest commit	ff3705a
🔍 Latest deploy log	https://app.netlify.com/sites/marblerun-docs/deploys/6638bb6655f44f00080e1d7a