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feat(nan): persist NIK/NPK credentials in NVS

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Replace nik/nik_valid in wifi_nan_sync_config_t with reset_current_nvs_creds
and use_nvs_for_caching. On NAN start, load the saved own NIK and peer
credentials from NVS (or erase them when reset is requested); generate and
persist a fresh own NIK only when none is valid and caching is enabled.

PASN reuses the SAE module (PWE/crypto and the comeback-token mechanism),
so define CONFIG_SAE whenever SoftAP-SAE or PASN is enabled. This fixes the
undefined references to check_comeback_token()/auth_build_token_req() when
SOFTAP config is disabled.
This commit is contained in:
Nachiket Kukade
2026-06-30 14:55:51 +08:00
committed by Jack
parent e70033e6a7
commit ebf7dc9b31
11 changed files with 139 additions and 34 deletions
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components/esp_wifi/include/esp_wifi_types_generic.h
+4 -3
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@@ -604,9 +604,8 @@ typedef struct {
uint8_t scan_time; /**< Scan time in seconds while searching for a NAN cluster */
uint16_t warm_up_sec; /**< Warm up time before assuming NAN Anchor Master role */
bool disable_random_mac;/**< Disable the MAC Randomisation in NAN */
uint8_t nik[ESP_WIFI_NAN_NIK_LEN]; /**< Optional NIK. Auto-generated when nik_valid is false. */
uint8_t nik_valid: 1; /**< NIK present in nik[] and should be used as-is. */
uint8_t reserved: 7; /**< Reserved for future use. */
bool reset_current_nvs_creds; /**< Erase all NAN credentials (own NIK and cached peer NIK/NPK entries) saved in NVS before starting. */
bool use_nvs_for_caching; /**< Persist newly-learned peer credentials (NIK/NPK) to NVS so they survive across reboots. */
} wifi_nan_sync_config_t;
/**
@@ -874,7 +873,9 @@ typedef struct {
#define ESP_WIFI_NDP_ROLE_RESPONDER 2 /**< Responder role for NAN Data Path */
#define ESP_WIFI_NAN_NDP_PMK_LEN 32 /**< Length of NAN Datapath PMK */
#define ESP_WIFI_NAN_NPK_LEN ESP_WIFI_NAN_NDP_PMK_LEN /**< Length of NAN Pairwise Key (same as NDP PMK) */
#define ESP_WIFI_NAN_NDP_PMKID_LEN 16 /**< Length of NAN Datapath PMKID */
#define ESP_WIFI_NAN_MAX_PEER_CREDS 2 /**< <Maximum number of NAN peer credentials that can be stored */
#define ESP_WIFI_NAN_MAX_CREDS_PER_SVC 4 /**< Maximum number of NAN security credentials per service (passphrase/PMK entries) */
#define ESP_WIFI_MAX_SVC_NAME_LEN 256 /**< Maximum length of NAN service name */