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Instance sharing

Two instances that know each other exchange documentation, without an intermediary

Tenants at isidaten usually live on separate installations. Anyone wanting to pass a policy to a subsidiary, an association or an advised municipality therefore shares between two instances that have to know and trust each other. Trust is established directly: one instance generates a one-time invitation code, the other redeems it, both exchange their public keys, and an administrator confirms the other side’s fingerprint. From then on every request is signed with the sender’s Ed25519 key and bound to time and nonce. That also works for installations in your own data centre without a connection to the isidaten hub.

ISO 27001BSI IT-Grundschutz
Features

Your benefits

1

The code is shown exactly once

The invitation code contains address, public key and a one-time secret, is valid for 48 hours and is stored nowhere. It is passed to the other side’s administrator over a trusted channel, and both sides confirm the fingerprint before anything flows.

2

Unknown means rejected

A recipient rejects object types it does not know instead of half-adopting them. In this stage policies are handed over; documents, checklists, risks and measures follow through the same interface.

3

Anonymisation is the default

A handed-over policy is an independent copy. People, responsibilities and internal references are anonymised before sending by default; the recipient accepts or rejects and acknowledges.

Capabilities

All capabilities at a glance

  • Instance identifier and Ed25519 key pair, private key encrypted with the application key
  • Pairing via one-time invitation code, valid 48 hours, fingerprint confirmation by administrators on both sides
  • Every request signed, bound to timestamp and nonce, protected against replay
  • HTTPS enforced, receipt switchable instance-wide, maximum size per package
  • Sending policies with default anonymisation, inbox, acceptance or rejection, receipt
  • Key rotation via the console, followed by re-pairing
  • No hub required, also on-premises behind the firewall
Result

Documentation moves between two organisations the way it should: as a copy, signed, with consent on both sides.

Experience Instance sharing live

Schedule a no-obligation demo – we will show you the module with your own use cases.