Skip to main content

Audit Log, Token Manager & Privacy Guard

Security observability, authentication token lifecycle, and privacy protection — the operational side of PrismSecurity.

Security Audit Log

Tamper-evident, append-only event log using SHA-256 hash chains. Each entry’s hash depends on the previous — breaking one link invalidates the chain.

Record Events

24 Event Kinds

Query and Filter

Verify Integrity

Export

Capacity Management

The hash chain uses SHA256(event.id + event.kind + event.detail + event.timestamp + previousHash). Verifying integrity is O(n) — call it periodically, not on every write.

Token Manager

Actor-based JWT token lifecycle with automatic refresh and concurrent request handling.

Store Tokens

Get Valid Token (Auto-Refresh)

Concurrent Refresh Handling

Multiple concurrent callers won’t trigger parallel refresh requests — the actor queues them and shares the result:

JWT Decode

PrismAccessToken.decode parses the JWT payload without verifying the signature — it’s for client-side claim inspection only. Always validate tokens server-side.

Token Configuration

Intercept Requests

Privacy Guard

PII Redaction

Detect and redact personally identifiable information using regex patterns.

Redaction Styles

PII Types

Privacy Guard (Unified Facade)

Privacy Levels

Screen Protection (SwiftUI)

Hide sensitive content when the app goes to background or appears in the app switcher.
Or wrap in a secure container:
When the app leaves the foreground, a lock overlay with a shield icon replaces the content.

Clipboard Guard

Auto-clear the clipboard after copying sensitive data.
Screen protection uses @Environment(\.scenePhase) — it must be applied inside a SwiftUI view hierarchy that receives scene phase changes. It won’t work in isolated view previews.