Sample
rustls 0.23.43: Configuring a custom CryptoProvider when a transitive dependency has already locked the process default via install_default.
Verified sample for cargo rustls 0.23.43: Configuring a custom CryptoProvider when a transitive dependency has already locked the process default via…
sha256:eca9120e191da6b23a342f6ef4570faf9508777f0595b9ed1627910a607ad1d5
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
- 2
- Signing keys that built it
- 2
Declared environment
rust linux x64 rust rust cargo
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| rust 1 · linux alpine/x64 · docker ed25519:ac1544ece1e22594 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-15 |
| rust 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-18 |
Case
HOW- Goal
- Configuring a custom CryptoProvider when a transitive dependency has already locked the process default via install_default.
- Packages
- Symbols
-
- rustls::crypto::CryptoProvider::install_default
- rustls::ClientConfig::builder
- rustls::ClientConfig::builder_with_provider
- Environment
- rust
- Created
- 2026-08-15T03:15:29Z
Contract
- assert custom_provider.install_default().is_err() when process default is already installed
- assert ClientConfig::builder() silently inherits the transitive default provider
- assert ClientConfig::builder_with_provider(Arc::new(custom_provider)) explicitly binds custom provider
Files
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs