# Get Key

Returns a session key (`authnKey`) to initiate an authentication flow with SPID, CIE, or EIDAS.

## Get a authn key to start an authentication flow

 - [GET /api/secure/{environment_name}/getKey](https://docs.namirial.app/products/esp/openapi/get-key/getkey.md)

## Get a authn key to start an authentication flow (deprecated)

 - [GET /sslprotected/{environment_name}/getKey.php](https://docs.namirial.app/products/esp/openapi/get-key/getkeydeprecatedphp.md)

## Get a authn key to start an authentication flow (deprecated)

 - [GET /sslprotected/{environment_name}/getKey](https://docs.namirial.app/products/esp/openapi/get-key/getkeydeprecated.md)