pub fn serialize_key_package_hash_ref(
kp: &KeyPackage,
provider: &impl MlsProviderExt,
) -> Result<Vec<u8>, IdentityError>Expand description
The key package hash ref in the key store key layout (kv_codec::encode_key).
These bytes are the KEY_PACKAGE_WRAPPER_PRIVATE_KEY key and the
key_package_history.key_package_hash_ref column. The key layout does not
change with the value codec, so neither needs a migration when it does.