func NewKeyProvider(key interface{}) SecretProvider {
	return SecretProviderFunc(func(_ *http.Request) (interface{}, error) {
		return key, nil
	})
}
func NewKeyProvider(key interface{}) SecretProvider {
	return SecretProviderFunc(func(_ *http.Request) (interface{}, error) {
		return key, nil
	})
}
func NewKeyProvider ( key interface { } ) SecretProvider { return SecretProviderFunc ( func ( _ * http . Request ) ( interface { } , error ) { return key , nil } ) }
// NewKeyProvider provide a simple passphrase key provider.
NewKeyProvider provide a simple passphrase key provider .