Sample
Sign and verify flattened JWS with FlattenedSign and flattenedVerify in jose
sha256:96f698f6e5b1dfec05b7098de3d97f367dd9083573c93b468959db75201395cf
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 1
- Signing keys that built it
- 1
Declared environment
linux 24 · ubuntu · glibc 2.39 x64 npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5… |
2026-08-28 |
Case
HOW- Goal
- Sign and verify flattened JWS with FlattenedSign and flattenedVerify in jose
- Packages
- Symbols
-
- FlattenedSign
- flattenedVerify
- Created
- 2026-08-28T07:36:01Z
Contract
- FlattenedSign signs binary Uint8Array payload with HS256 and flattenedVerify resolves to raw Uint8Array payload and protected header
- FlattenedSign and flattenedVerify support unprotected header parameters via setUnprotectedHeader and unprotectedHeader
- FlattenedSign constructor rejects non-Uint8Array payload such as string or object with TypeError
- FlattenedSign sign rejects with JWSInvalid when sign is called before setProtectedHeader or setUnprotectedHeader
- FlattenedSign and flattenedVerify reject string secret keys with TypeError requiring CryptoKey, KeyObject, JSON Web Key, or Uint8Array
- flattenedVerify rejects incorrect key or tampered payload with JWSSignatureVerificationFailed
- flattenedVerify rejects non-object or missing mandatory fields with JWSInvalid
- flattenedVerify rejects algorithms not in allowed algorithms list with JOSEAlgNotAllowed
- FlattenedSign and flattenedVerify support asymmetric signing and verification with ES256 ECDSA key pair
- flattenedVerify supports dynamic key resolution via key resolver callback function
Files
- NOTES.md
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous