======CAdES======

CADES (CMS Advanced Electronic Signature) is a CMS-based signature format defined in the ETSI 101 733 standard. CAdES signature is examined under two main sections.

  - Attached 
  - Detached

===== Attached Signature =====
Signed content is encapsulated by the signature.

{{https://yazilim.kamusm.gov.tr/eit-wiki/data/media/en/cades_attached_en.png?350|CAdES Attached}}

===== Detached Signature ===== 
In this structure, the content is separate from the signature. Usually this method is used to sign big files.

{{https://yazilim.kamusm.gov.tr/eit-wiki/data/media/en/cades_detached_en.png?350|CAdES Ayrık}}


In the [[ https://www.etsi.org/deliver/etsi_ts/101700_101799/101733/01.08.01_60/ts_101733v010801p.pdf |ETSI TS 101 733]], 10 types of signature formats have been defined, such as BES, EPES, ES-T, ES-X Long, ES-X Type 1, ES-X Type 2, ES-X Long Type 1, ES-X Long Type 2 and ES-A.
^**Signature Type**^^
|**CAdES-BES**|Basic Electronic Signature|
|**CAdES-EPES**|Explicit Policy-based Electronic Signature |
|**CAdES-T**|Electronic Signature with Time|
|**CAdES-X Long**|Extended Long Electronic Signature|
|**CAdES-X Type 1**|Extended Electronic Signature with Time Type 1|
|**CAdES-X Type 2**|Extended Electronic Signature with Time Type|
|**CAdES-X Long Type 1**|Extended Long Electronic Signature with Time Type 1|
|**CAdES-X Long Type 2**|Extended Long Electronic Signature with Time Type 2|
|**CAdES-A**|Archival Electronic Signature|
|**P4 CAdES-X Long**|P4 Extended Long Electronic Signature|
|**P4 CAdES-A**|P4 Archival Electronic Signature|

 [[CAdES BES]], [[CAdES-T]], [[CAdES X-LONG]], [[CAdES-A]], [[cades_p4_x-long|P4 CAdES-X LONG]] and [[P4 CAdES-A]] are widely used.