update storage erase, fix exposure model, optimize exposure loop

components/ena/include/ena-exposure.h

@@ -22,6 +22,7 @@
 
 #include <stdio.h>
 #include "esp_err.h"
+#include "ena-storage.h"
 #include "ena-crypto.h"
 
 #define ENA_EXPOSURE_LOG "ESP-ENA-exposure" // TAG for Logging
@@ -151,8 +152,8 @@ typedef struct __attribute__((__packed__))
 {
     uint8_t key_data[ENA_KEY_LENGTH];
     uint8_t transmission_risk_level;
-    uint8_t rolling_start_interval_number;
-    uint8_t rolling_period;
+    uint32_t rolling_start_interval_number;
+    uint32_t rolling_period;
     ena_report_type_t report_type;
     uint32_t days_since_onset_of_symptoms;
 } ena_temporary_exposure_key_t;
@@ -231,7 +232,15 @@ ena_exposure_summary_t *ena_exposure_current_summary(void);
 ena_exposure_config_t *ena_exposure_default_config(void);
 
 /**
- * @brief reads Temporary Exposue Key and check for exposures
+ * @brief reads Temporary Exposue Key check for exposures with certain beacon
+ * 
+ * @param[in] ena_beacon_t              the beacon to check against
+ * @param[in] temporary_exposure_key    the temporary exposure keys to check
+ */
+void ena_exposure_check(ena_beacon_t beacon, ena_temporary_exposure_key_t temporary_exposure_key);
+
+/**
+ * @brief reads Temporary Exposue Key and check for exposures with all beacons
  * 
  * @param[in] temporary_exposure_key    the temporary exposure keys to check
  */

components/ena/include/ena-storage.h

@@ -81,6 +81,14 @@ void ena_storage_read(size_t address, void *data, size_t size);
  */
 void ena_storage_write(size_t address, void *data, size_t size);
 
+/**
+ * @brief       erase storage at given address
+ * 
+ * @param[in]   address     the address to erase from
+ * @param[in]   size        how many bytes to erase
+ */
+void ena_storage_erase(size_t address, size_t size);
+
 /**
  * @brief       deletes bytes at given address and shift other data back
  * 
@@ -224,7 +232,7 @@ void ena_storage_remove_beacon(uint32_t index);
  * This function completely deletes all stored data and resets the counters 
  * of TEKs, temporary beacon and beacon to zero.
  */
-void ena_storage_erase(void);
+void ena_storage_erase_all(void);
 
 /**
  * @brief       erase all stored TEKs
@@ -254,6 +262,11 @@ void ena_storage_erase_temporary_beacon(void);
  */
 void ena_storage_erase_beacon(void);
 
+/**
+ * @brief       helper to dump a byte array as hash
+ */
+void ena_storage_dump_hash_array(uint8_t *data, size_t size);
+
 /**
  * @brief       dump all stored TEKs to serial output
  *