# uselesskey-core-keypair-material
Published-internal compatibility shim.
Shared PKCS#8/SPKI material helper ownership moved into `uselesskey-core`.
Existing imports from this crate remain available during the compatibility-shim
period:
```rust
use uselesskey_core_keypair_material::Pkcs8SpkiKeyMaterial;
```
Prefer the fixture-family crates (`uselesskey-rsa`, `uselesskey-ecdsa`,
`uselesskey-ed25519`) or the `uselesskey` facade for normal usage. The
canonical helper implementation now lives at
`uselesskey_core::srp::keypair_material`.