CodeSampleX

Sample

verify github.com/smallstep/pkcs7.NewSignedData in pkg:golang/github.com/smallstep/pkcs7@v0.0.0-20231024181729-3b98ecc1ca81

sha256:5e3911f41f57f836a6a1a4a6f8466eb722b52ce4d31fa5baeea322dcb100042a

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 go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f…
2026-08-26

Case

HOW
Goal
verify github.com/smallstep/pkcs7.NewSignedData in pkg:golang/github.com/smallstep/pkcs7@v0.0.0-20231024181729-3b98ecc1ca81
Packages
Symbols
  • github.com/smallstep/pkcs7.NewSignedData
Created
2026-08-26T12:04:29Z

Contract

  1. pkcs7.NewSignedData creates signed data payload verifiable with Parse and Verify
  2. SignedData.Detach produces detached signature with empty content verifiable when original data is provided
  3. SignedData.AddSignerChain includes intermediate certificates in SignedData and verifies against a root cert pool
  4. SignedData with custom signed attributes embeds attributes unmarshable by PKCS7.UnmarshalSignedAttribute
  5. PKCS7.Verify fails when payload data is tampered or corrupted

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • main.go
  • spec.json
  • test/contract.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous