wifi_prov: Exposed events for secure session establishment

components/protocomm/include/security/protocomm_security.h

@@ -7,11 +7,25 @@
 #pragma once
 
 #include <esp_err.h>
+#include "esp_event.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+ESP_EVENT_DECLARE_BASE(PROTOCOMM_SECURITY_SESSION_EVENT);
+
+/**
+ * @brief   Events generated by the protocomm security layer
+ *
+ * These events are generated while establishing secured session.
+ */
+typedef enum {
+    PROTOCOMM_SECURITY_SESSION_SETUP_OK,                 /**< Secured session established successfully */
+    PROTOCOMM_SECURITY_SESSION_INVALID_SECURITY_PARAMS,  /**< Received invalid (NULL) security parameters (username / client public-key) */
+    PROTOCOMM_SECURITY_SESSION_CREDENTIALS_MISMATCH,     /**< Received incorrect credentials (username / PoP) */
+} protocomm_security_session_event_t;
+
 /**
  * @brief   Protocomm Security 1 parameters: Proof Of Possession
  */