> For the complete documentation index, see [llms.txt](https://docs.editran.onesait.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.editran.onesait.com/documentacion-editran/connect-3.2-en/firma/administracionconnectfirma/canal/configuracion_canal_recepcion_con_firma.md).

# Reception channel

If a *channel* is a reception channel and has the signature feature marked:

* The files received through it are signatures that are verified immediately and automatically after reception.
* The signature files received must have the extension `.xsig` or `.p7b` so that Connect recognizes them as such and can apply the desired verification processing to them.
* The verification of each signature file is performed at two levels: first with respect to itself (structure, validity of the received certificates, integrity of the signed file, etc.) and another with respect to the signing rules, or *file groups*, that apply to it. Whenever possible, during validation of the first level the signed file is extracted.
* The rules with which the signatures are verified are defined through the *file groups* verification-purpose certificates that are associated with the *channel*.
* Files are not configured from the menu **Contacts** and **Channels** but from the menu **File group**.
* In **Integration with applications -> Post-reception process** must not be activated **Move to directory** nor **Run program** when this implies moving the received files with extension `.xsig` or `.p7b`. This is because the verification process can only be triggered if the signature files are located in the reception directory.

The *file groups* for verification purposes, and which have already been configured for the *channel* reception, are shown listed in **Address Book -> Contact -> Channel (Edit) → Files**.

![List of file groups of a signed reception channel](https://1386330368-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F2jqgE5yyM3S58JKHROiz%2Fuploads%2Fgit-blob-8abf676ab85553d600219a02211951586bc3726f%2F03_listado_grupos_ficheros_canal_recepcion.png?alt=media)


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