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:
use 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.