Function tsk_to_private_key_import 

pub fn tsk_to_private_key_import(
    key: &SignedSecretKey,
) -> Result<(PrivateKeyImport, KeyMechanism), Error>

Converts an OpenPGP Transferable Secret Key into PrivateKeyImport object.

Errors

Returns an Error::SignstarCryptoSigner if creating a PrivateKeyImport from key_data is not possible.

Returns an crate::Error::Key if key_data is an RSA public key and is shorter than [signstar_crypto::key::MIN_RSA_BIT_LENGTH].