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@nyuro/identity-jwks

v0.3.0

Published

Generic JWT verifier for Nyuro services: pinned algorithm, mandatory iss + aud, JWKS cache with unknown-kid refetch and cooldown. Verifies the auth service's per-product tokens.

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@nyuro/identity-jwks

Server-side verification of the per-product access tokens minted by the Nyuro auth service (apps/auth, spec docs/specs/AUTH-MIGRATION-SPEC.md §4.1); generic for any JWKS issuer. @nyuro/identity-clerk is unchanged.

const verifier = createIdentityTokenVerifier({
    issuer: 'https://auth.nyuro.ai',
    audience: 'https://flow.nyuro.ai', // this service only
    jwksUrl: 'https://auth.nyuro.ai/api/auth/jwks'
})
const claims = await verifier.verify(bearer) // TokenRejectedError → 401, JwksUnavailableError → 503

Enforces one pinned algorithm (EdDSA default), byte-exact iss, aud equal to this service as a single string, exp/nbf/iat with skew (5 s), lifetime ≤ 600 s, and the claims contract (org and org_role together or both absent: a user without an org has no org). The JWKS cache refetches on an unknown kid at most once per cooldown (30 s), keeps cached keys when a refresh fails and fails closed when it never loaded. A verifier inside its cooldown rejects the first token of a just-rotated key until the cooldown ends; clients retry once on 401.

Tests: verify the shared fixture contracts/examples/identity-tokens/v1.json (also shipped as @nyuro/contracts/fixtures/identity-tokens/v1.json) with jwks: fx.jwks and now: () => fx.now * 1000.