key

type IssuerType string

type KeyFetcher interface {
	// FetchByKeyID looks up a KeySpec from the 'keyid' metadata parameter on
	// the signature.
	FetchByKeyID(ctx context.Context, rh http.Header, keyID string) (KeySpecer, error)
	// Fetch looks up a KeySpec when keyid is not present in the signature.
	Fetch(ctx context.Context, rh http.Header, md types.MetadataProvider) (KeySpecer, error)
}

type KeyIdentity struct {
	Identity   string
	IssuerType IssuerType
	Issuer     string
}

type KeySpec struct {
	KeyID    string
	Identity KeyIdentity // Optional. The key may be associated with an identity.
	Algo     types.Algorithm
	PubKey   crypto.PublicKey
	Secret   []byte // Shared secret for symmetric algorithms.
}

type KeySpecer interface {
	KeySpec() (KeySpec, error)
}