71         let mut session = Session::new(Port::TamperProof, true).map_err(|e| {  in new()
72             km_err!(SecureHwCommunicationFailed, "couldn't create storage session: {:?}", e)  in new()
74         let secure_file = session.open_file(file_name, OpenMode::Create).map_err(|e| {  in new()
75             km_err!(SecureHwCommunicationFailed, "couldn't create file {}: {:?}", file_name, e)  in new()
91         session.write_all(file, data).map_err(|e| {  in write_all()
92             km_err!(SecureHwCommunicationFailed, "failed to write data; received error: {:?}", e)  in write_all()
130     let serialized_buffer = attestation_key_data.write_to_bytes().map_err(|e| {  in write_protobuf_to_attestation_key_file()
131         km_err!(SecureHwCommunicationFailed, "couldn't serialize attestationKey: {:?}", e)  in write_protobuf_to_attestation_key_file()
134     file.write_all(&serialized_buffer).map_err(|e| {  in write_protobuf_to_attestation_key_file()
135         km_err!(SecureHwCommunicationFailed, "failed to provision attestation key file: {:?}", e)  in write_protobuf_to_attestation_key_file()
270     let serialized_buffer = attestation_ids.write_to_bytes().map_err(|e| {  in provision_attestation_id_file()
271         km_err!(SecureHwCommunicationFailed, "couldn't serialize attestationIds: {:?}", e)  in provision_attestation_id_file()
274     file.write_all(&serialized_buffer).map_err(|e| {  in provision_attestation_id_file()
275         km_err!(SecureHwCommunicationFailed, "failed to provision attestation IDs file: {:?}", e)  in provision_attestation_id_file()
283     let mut session = Session::new(Port::TamperProof, true).map_err(|e| {  in delete_attestation_ids()
284         km_err!(SecureHwCommunicationFailed, "failed to connect to storage port: {:?}", e)  in delete_attestation_ids()
286     session.remove(KM_ATTESTATION_ID_FILENAME).map_err(|e| {  in delete_attestation_ids()
287         km_err!(SecureHwCommunicationFailed, "failed to delete attestation IDs file: {:?}", e)  in delete_attestation_ids()
294     let mut session = Session::new(Port::TamperProof, true).map_err(|e| {  in get_file_contents()
295         km_err!(SecureHwCommunicationFailed, "failed to connect to storage port: {:?}", e)  in get_file_contents()
302         Err(e) => {  in get_file_contents()
307                 e  in get_file_contents()
311     let size = session.get_size(&file).map_err(|e| {  in get_file_contents()
312         km_err!(SecureHwCommunicationFailed, "failed to get size for '{}': {:?}", file_name, e)  in get_file_contents()
315     let content = session.read_all(&file, buffer.as_mut_slice()).map_err(|e| {  in get_file_contents()
316         km_err!(SecureHwCommunicationFailed, "failed to read '{}': {:?}", file_name, e)  in get_file_contents()
330         Err(e) => return Err(e),  in read_attestation_ids()
334             .map_err(|e| km_err!(UnknownError, "failed to parse attestation IDs proto: {:?}", e))?;  in read_attestation_ids()
367             .map_err(|e| km_err!(UnknownError, "failed to parse attestation key proto: {:?}", e))?,  in read_attestation_key_content()
378         Err(e) => {  in import_ec_key()
379             info!("couldn't parse as sec1 ECPrivateKey, will try as PKCS#8. Error {:?}", e);  in import_ec_key()
390         Err(e) => {  in import_rsa_key()
391             info!("couldn't parse PKCS#1 RSA key, will try as PKCS#8. Error {:?}", e);  in import_rsa_key()
454         if let Err(e) = result {  in signing_key()
455             info!("failed to read attestation key ({:?}), fall back to test key", e);  in signing_key()
465         if let Err(e) = result {  in cert_chain()
466             info!("failed to read attestation chain ({:?}), fall back to test chain", e);  in cert_chain()