Sample
verify chacha20poly1305.NewX in pkg:golang/golang.org/x/crypto@v0.36.0
sha256:5d5b7593a07e5220a5b00881562532303da8f969ddf367a5e5c0cac7c9862654
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
go 1.26 linux 24 · ubuntu · glibc 2.39 amd64 go 1.26 go 1.26 go 1
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 chacha20poly1305.NewX in pkg:golang/golang.org/x/crypto@v0.36.0
- Packages
- Symbols
-
- chacha20poly1305.NewX
- Environment
- go 1.26.6
- Created
- 2026-08-26T01:22:17Z
Contract
- chacha20poly1305.NewX creates an XChaCha20-Poly1305 AEAD cipher with a 32-byte key
- chacha20poly1305.NewX rejects keys not equal to 32 bytes with an error
- aead.NonceSize returns 24 bytes for XChaCha20-Poly1305
- aead.Overhead returns 16 bytes for Poly1305 tag
- aead.Seal encrypts plaintext with 24-byte nonce and additional data
- aead.Open decrypts ciphertext and authenticates additional data
- aead.Open rejects tampered ciphertext, wrong nonce, or mismatched additional data
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract_test.go
Origin Seeder
anonymous