Zero Trust Engineering — Service-to-service authorization
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/02 About
Applications and workloads engineering reference for service-to-service authorization, including policy, logical interfaces, recovery and assurance.
Purpose: Service-to-service authorization. Domain: Applications and workloads. Family: decision. Scenario trigger: Evaluate scoped service invocation. Input assurance: Authenticated caller, API operation, resource and delegated context. Evaluation: Evaluate operation-specific permission and purpose constraints. Governing policy: Least-privilege service call and delegation policy. Resource-side obligation: Admit bounded service operation or explicitly reject. Protected concern: Protected inter-service operation. Logical interface: Caller target method object scope context decision and obligation. Evidence: Service policy outcome request correlation and privilege evidence. Failure: Transitive privilege amplification or unscoped service grant. Required recovery: Deny operation and re-evaluate delegation authority. Architectural invariant: Authentication of a service is insufficient authorization of its actions Adoption: replace reference roles with concrete owner-controlled services. Specify exact provider/consumer identities, schema fields and classifications, signal provenance and freshness, idempotency, authorization lifetime, timeout/retry limits, observation and tamper evidence. A denied or failed operation must not silently become a permitted one. Scope: original vendor-neutral, implementation-agnostic technical reference model. Illustrative logical components and behaviors are neither a deployed system nor evidence of regulatory compliance. Package identities remain stable within the package; cross-package semantic reconciliation requires separate explicit registry support.
Curated · other · unspecified · Published by Lattix · 28 elements · 34 relationships · validated on publish
/03 Contents
- Capability
- Applications and workloads, Service-to-service authorization
- Role
- Applications and workloads owner
- Business Actor
- Access-requesting principal
- Activity
- Evaluate scoped service invocation, Verify: Authenticated caller, API operation, resource and delegated context, Assess: Evaluate operation-specific permission and purpose constraints, Execute: Admit bounded service operation or explicitly reject, Exception: Transitive privilege amplification or unscoped service grant, Recover: Deny operation and re-evaluate delegation authority, Collect additional authorization evidence
- Application Component
- Authenticated caller, API operation, resource and delegated context, Evaluate operation-specific permission and purpose constraints, Admit bounded service operation or explicitly reject
- Application
- Protected inter-service operation
- Policy
- Least-privilege service call and delegation policy
- API
- Service-to-service authorization logical interface
- Message/Event Schema
- Caller target method object scope context decision and obligation
- Data Store
- Service policy outcome request correlation and privilege evidence
- Control
- Service-to-service authorization enforcement assurance
- Risk
- Transitive privilege amplification or unscoped service grant risk
- Requirement
- Authentication of a service is insufficient authorization of its actions
- Measure
- Service-to-service authorization assurance completeness
- Trust Boundary
- Service-to-service authorization authority boundary
- State
- Conditionally authorized, Denied or additional proof required, Additional assurance required, Active authorization revoked