Define basics for eID Verification of Matrix devices

Problem:

• To increase trust against other users and avoid expose of personal data it is required that only authorized devices can connect to BundID services.
• How will eID verification grant access to Matrix devices for BundID services?

Goal:

Define how eID device verification will grant access to Matrix devices for BundID services.

ACs:

• Outline eID device verification process.
• Discuss security considerations (trust for eID server). -> #202
• Requirements for multi device (verification for each device versus verification on signing key base).
• Create ADR.

Notes/ resources:

• Requirements uIDs: Zapuk_109; LB_26; LB_36