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…ured (LAB-513) Both `cache.secure.wrap()` and the `withExecutionContext(ctx)` view's `secure.wrap()` were bare delegates to `wrap()`. Every intent is typed `SecureCache`, so on a cache built without `encryption` a "secure" registration silently cached plaintext (CWE-311) while the interface doc claimed it "always encrypts". One private guard, `CacheImpl.secureWrap`, now throws `ConfigurationError` at wrap time when no encryption manager is configured; both sites delegate to it. Encrypted caches are unchanged. Matches cachekit-py (raises at decoration time) and cachekit-rs (`secure()` returns `Err`). Deliberately no opt-in to run unencrypted: callers who want plaintext call `wrap()`. BREAKING CHANGE: `cache.secure.wrap()` and `withExecutionContext(ctx).secure.wrap()` now throw `ConfigurationError` at wrap time when the cache has no `encryption` configured, instead of silently caching plaintext. Use `createCache.secure()` / pass `encryption`, or call `wrap()` for unencrypted caching.
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WalkthroughSecure wrapping now fails at registration when encryption is absent. Both secure wrapping paths use the shared encrypted wrapper, while request-scoped calls retain ChangesSecure wrapping enforcement
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix Merge Risk: 🔵 Low · up to Scoped secure stale refreshes require execution-context lifetime registration in Workers. The implementation forwards that callback, but a focused stale-refresh test should protect this behavior before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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Inline comments:
In `@packages/cachekit/src/cache.secure-wrap.test.ts`:
- Around line 47-109: Add a scoped `secure.wrap` stale-while-revalidate test
using an observable execution context instead of the no-op callback in `viewOf`,
then create a stale entry and invoke the wrapped function. Assert that
`ctx.waitUntil` receives the secure refresh promise passed through
`withExecutionContext(...).secure` to
`BackgroundRefreshManager.scheduleRefresh`, while preserving the existing miss
and hit coverage.
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…e ciphertext probe (LAB-513) Review findings on the first commit: - The view's secure.wrap used to BE wrapWith and inherited the Workers SWR coverage; as its own closure, dropping the third argument passed every test while silently disabling SWR for secure wrappers on Workers. A spy on CacheImpl.prototype.wrap now pins the handle through to ctx.waitUntil. - With default compression on, LZ4 alone removed the canary substring from the stored bytes, so the "stores only ciphertext" assertion also passed on an unencrypted store. Compression is off in this suite and the plain wrap() case now doubles as the plaintext control. - SecureCache's outer doc said "with encryption" though every intent returns it; the secureWrap JSDoc repeated history that lives in the commit and test header. Both trimmed to the contract. `secure` is typed off the interface instead of restating the generics.
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…ith instanceof (LAB-513) Replaces the CacheImpl.prototype.wrap spy with the real stale-while-revalidate path: an always-stale L1 on an encrypted cache, wrapped through withExecutionContext(ctx).secure.wrap, must hand its refresh promise to ctx.waitUntil and that promise must be the recompute. Fails when the waitUntil forward in secureWrap is dropped. The viewOf helper narrows with instanceof CacheImpl instead of a double cast.
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Summary
This PR fixes a security vulnerability (LAB-513, CWE-311) where
secure.wrap()would silently cache plaintext when encryption was not configured, instead of failing safely.Problem
Every cache built via the intent helpers (
minimal,production,io) or plaincreateCache({ backend })is typed asSecureCache, so the.secureproperty is always present. Bothcache.secure.wrapand the request-scopedcache.withExecutionContext(ctx).secure.wrapwere bare delegates towrap(). On a cache created withoutencryption, registering a function as "secure" would store plaintext data with no error, warning, or type error — exposing sensitive data (e.g., PII) that callers reasonably expected to be encrypted.Change
secureWrap()method onCacheImplnow throws aConfigurationErrorimmediately when the cache has no encryption configured — before the wrapped function is ever called or anything is stored.cache.secure.wrapand thewithExecutionContextview, since both delegate to the shared method.secure.wrap()unencrypted. Callers wanting unencrypted caching must use the plainwrap()method (which is unaffected).secure()returnsErr).Details
SecureCachetype documentation to describe the new fail-closed behavior.cache.secure-wrap.test.ts) that verifies both sites throwConfigurationErrorat wrap time without invoking the function or writing to the backend, and confirms that with encryption configured, only ciphertext (never the canary plaintext) is stored.Impact
This is a breaking change (
fix(cache)!): code that relied onsecure.wrap()silently storing plaintext without encryption will now throw aConfigurationError.Summary
Fixes a security vulnerability (LAB-513, CWE-311) where
secure.wrap()could silently store plaintext data at rest when encryption was not configured on the cache.Problem
Every
createCache()call and intent (minimal,production,io) returns theSecureCachetype, meaning.secureis always present — even on caches built without anencryptionconfiguration. Previously, callingsecure.wrap()on such an unencrypted cache would store plaintext with no error, warning, or type error, defeating the purpose of the security-labelled API.Changes
Fail-closed enforcement:
secure.wrap()now routes both the instance and thewithExecutionContext(Workers) view throughsecureWrap, which throws aConfigurationErrorat wrap time when no encryption is configured. There is deliberately no opt-in to run unencrypted under the secure path. This matches the contract in the Python (raises at decoration) and Rust (secure()returnsErr) implementations.Refactored
secure.wrapbinding: The instance'ssecure.wrapis now a simple closure delegating tosecureWrap, typed againstSecureCache['secure'].Documentation: Updated the
SecureCacheinterface docs to clarify that encryption is enforced bysecure.wrapat wrap time, not by the type.Tests
secure.wrap()throwsConfigurationErrorat wrap time (referencingcreateCache.secure()) before the wrapped function is ever called, for both the instance and the Workers view.secure.wrapforwards the request-scopedwaitUntilhandle towrap()(SWR plumbing), since the view'ssecure.wrapis now its own closure rather than inheriting fromwrapWith.Summary
This PR ensures
secure.wrap()fails closed when encryption is not configured (LAB-513), preventing sensitive data from being written to the backend in plaintext when a secure wrapper is used without encryption.Changes
The changes in this file are focused on the test suite (
cache.secure-wrap.test.ts):Test Infrastructure Improvements
viewOf: Replaced an unsafeas unknown as CacheImplcast with a properinstanceof CacheImplruntime check that throws a descriptive error ifcreateCache()returns an unexpected type.makeCache()to accept an optionall1(CacheOptions['l1']) parameter, enabling tests to configure L1 behavior.ALWAYS_STALE_L1(swrThresholdRatio: 2) to force every L1 entry to be treated as stale on its first hit, which allows exercising the stale-while-revalidate (SWR) path deterministically.Test Behavior Rewrite for Workers SWR Contract
CacheImpl.prototype.wrapand manually invoked thewaitUntilhandle) with an integration-style test that drives the real stale-while-revalidate path:waitUntilis called exactly once with the refreshPromise, and that awaiting it triggers the actual refresh (compute count increments to 2).secure.wrapcorrectly forwards the requestwaitUntilhandle for SWR in a Workers environment, now that it is its own closure rather than inheriting fromwrapWith.vi.restoreAllMocks()call fromafterEachsince the test no longer relies on spies.Purpose
These test changes validate the corrected behavior around secure wrapping and its interaction with the Workers stale-while-revalidate refresh mechanism, using real execution paths rather than mocks for stronger guarantees.
Summary by CodeRabbit
Bug Fixes
Documentation
Tests