Implicit signature and audit data (signature type 1)
This is a scenario where the document, signature, and optional audit data are bundled into one chunk of data. Example signature formats that use this structure are implicit CAdES-A signatures (with audit data), implicit CAdES-T signatures (without audit data), enveloping/enveloped XAdES-A signatures (with audit data), and enveloping/enveloped XAdES-T signatures (without audit data).