Government · API Platform · Mission Owner · Security Authorization
Transition cryptographic trust across an interagency API
Which agency owns issuer trust, version negotiation, revocation, and failure response when algorithms change?
Operational pain
An API can be technically upgraded yet remain unusable because partner agencies depend on different certificate authorities, gateways, release cycles, and authorization packages.
Trigger
A shared service launch, certificate-authority change, or deprecation of a public-key algorithm.
QNSI contribution
Connect the decision to a controlled security path
Record trust anchors, service identities, algorithms, owners, test evidence, and transition states through QNSI.
Decision artifact
An interagency trust contract with compatibility evidence, failure ownership, sunset dates, and signed acceptance.
What still requires validation
Every participating authority tests its endpoint and approves security, privacy, operational, and records impacts.
External problem context
Primary sources
These sources establish the external requirement or risk context. They do not endorse HEOSSI or prove that QNSI completed this scenario.
Evidence boundary
What this page does—and does not—prove
This is a product evaluation pattern, not a customer case study, certification, legal opinion, regulator endorsement, or claim that a production deployment completed the described work.