Sample
golang.org/x/crypto v0.27.0: hkdf.New
Verified sample for golang golang.org/x/crypto v0.27.0: hkdf.New. The contract ran on go 1.26 · linux alpine/x64 · docker and passed: hkdf.New derives…
sha256:6f4f740bb2090f7cd229ec773239cfc0dddaca83d3117997c250643ba674cf01
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… |
2026-08-30 |
Case
HOW- Goal
- verify golang.org/x/crypto/hkdf.New in pkg:golang/golang.org/x/crypto@v0.27.0
- Packages
- Symbols
-
- golang.org/x/crypto/hkdf.New
- Created
- 2026-08-30T17:55:23Z
Contract
- hkdf.New derives pseudorandom key matching RFC 5869 test vector
- hkdf.New with nil salt defaults to hash size zeros
- hkdf.New produces deterministic output for identical secret, salt, and info
- hkdf.New produces distinct outputs when secret, salt, or info differs
- hkdf.New returns error when reading beyond 255 times hash size
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous