Apprently using the bt thread to save the keys causes a crash due to the low memory

applications/main/subghz/scenes/subghz_scene_keeloq_decrypt.c

@@ -7,8 +7,9 @@
 #include <furi.h>
 #include <bt/bt_service/bt.h>
 
-#define KL_DECRYPT_EVENT_DONE (0xD2)
-#define KL_TOTAL_KEYS         0x100000000ULL
+#define KL_DECRYPT_EVENT_DONE      (0xD2)
+#define KL_DECRYPT_EVENT_CANDIDATE (0xD3)
+#define KL_TOTAL_KEYS              0x100000000ULL
 
 #define KL_MSG_BF_REQUEST  0x10
 #define KL_MSG_BF_PROGRESS 0x11
@@ -57,16 +58,12 @@ static void kl_ble_data_received(uint8_t* data, uint16_t size, void* context) {
 
     } else if(data[0] == KL_MSG_BF_RESULT && size >= 26) {
         uint8_t found = data[1];
-        uint64_t mfkey = 0;
-        uint64_t devkey = 0;
-        uint32_t cnt = 0;
-        uint32_t elapsed_ms = 0;
-        memcpy(&mfkey, data + 2, 8);
-        memcpy(&devkey, data + 10, 8);
-        memcpy(&cnt, data + 18, 4);
-        memcpy(&elapsed_ms, data + 22, 4);
 
         if(found == 1) {
+            uint64_t mfkey = 0;
+            uint32_t cnt = 0;
+            memcpy(&mfkey, data + 2, 8);
+            memcpy(&cnt, data + 18, 4);
             uint16_t learn_type = (size >= 27) ? data[26] : 6;
 
             ctx->candidate_count++;
@@ -77,60 +74,13 @@ static void kl_ble_data_received(uint8_t* data, uint16_t size, void* context) {
             subghz_view_keeloq_decrypt_update_candidates(
                 ctx->subghz->subghz_keeloq_decrypt, ctx->candidate_count);
 
-            if(!ctx->subghz->keeloq_keys_manager) {
-                ctx->subghz->keeloq_keys_manager = subghz_keeloq_keys_alloc();
-            }
-            char key_name[24];
-            snprintf(key_name, sizeof(key_name), "BF_%07lX", ctx->serial);
-            subghz_keeloq_keys_add(
-                ctx->subghz->keeloq_keys_manager,
-                mfkey,
-                learn_type,
-                key_name);
-            subghz_keeloq_keys_save(ctx->subghz->keeloq_keys_manager);
-
-            SubGhzKeystore* env_ks = subghz_environment_get_keystore(
-                ctx->subghz->txrx->environment);
-            SubGhzKeyArray_t* env_arr = subghz_keystore_get_data(env_ks);
-            SubGhzKey* entry = SubGhzKeyArray_push_raw(*env_arr);
-            entry->name = furi_string_alloc_set(key_name);
-            entry->key = mfkey;
-            entry->type = learn_type;
+            view_dispatcher_send_custom_event(
+                ctx->subghz->view_dispatcher, KL_DECRYPT_EVENT_CANDIDATE);
 
         } else if(found == 2) {
             ctx->success = (ctx->candidate_count > 0);
-
-            if(ctx->candidate_count > 0) {
-                furi_string_printf(
-                    ctx->result,
-                    "Found %lu candidate(s)\n"
-                    "Last: %08lX%08lX\n"
-                    "Type:%u Cnt:%04lX\n"
-                    "Saved to user keys",
-                    ctx->candidate_count,
-                    (uint32_t)(ctx->recovered_mfkey >> 32),
-                    (uint32_t)(ctx->recovered_mfkey & 0xFFFFFFFF),
-                    ctx->recovered_type,
-                    ctx->recovered_cnt);
-
-                FlipperFormat* fff = subghz_txrx_get_fff_data(ctx->subghz->txrx);
-                flipper_format_rewind(fff);
-
-                char mf_str[20];
-                snprintf(mf_str, sizeof(mf_str), "BF_%07lX", ctx->serial);
-                flipper_format_insert_or_update_string_cstr(fff, "Manufacture", mf_str);
-
-                uint32_t cnt_val = ctx->recovered_cnt;
-                flipper_format_rewind(fff);
-                flipper_format_insert_or_update_uint32(fff, "Cnt", &cnt_val, 1);
-
-                if(ctx->hop2 != 0) {
-                    flipper_format_rewind(fff);
-                    flipper_format_insert_or_update_uint32(fff, "Hop2", &ctx->hop2, 1);
-                }
-            }
-
-            view_dispatcher_send_custom_event(ctx->subghz->view_dispatcher, KL_DECRYPT_EVENT_DONE);
+            view_dispatcher_send_custom_event(
+                ctx->subghz->view_dispatcher, KL_DECRYPT_EVENT_DONE);
         }
     }
 }
@@ -229,12 +179,62 @@ bool subghz_scene_keeloq_decrypt_on_event(void* context, SceneManagerEvent event
     if(!ctx) return false;
 
     if(event.type == SceneManagerEventTypeCustom) {
-        if(event.event == KL_DECRYPT_EVENT_DONE) {
+        if(event.event == KL_DECRYPT_EVENT_CANDIDATE) {
+            if(!subghz->keeloq_keys_manager) {
+                subghz->keeloq_keys_manager = subghz_keeloq_keys_alloc();
+            }
+            char key_name[24];
+            snprintf(key_name, sizeof(key_name), "BF_%07lX", ctx->serial);
+            subghz_keeloq_keys_add(
+                subghz->keeloq_keys_manager,
+                ctx->recovered_mfkey,
+                ctx->recovered_type,
+                key_name);
+            subghz_keeloq_keys_save(subghz->keeloq_keys_manager);
+
+            SubGhzKeystore* env_ks = subghz_environment_get_keystore(
+                subghz->txrx->environment);
+            SubGhzKeyArray_t* env_arr = subghz_keystore_get_data(env_ks);
+            SubGhzKey* entry = SubGhzKeyArray_push_raw(*env_arr);
+            entry->name = furi_string_alloc_set(key_name);
+            entry->key = ctx->recovered_mfkey;
+            entry->type = ctx->recovered_type;
+            return true;
+
+        } else if(event.event == KL_DECRYPT_EVENT_DONE) {
             kl_ble_cleanup(ctx);
             subghz->keeloq_bf2.sig1_loaded = false;
             subghz->keeloq_bf2.sig2_loaded = false;
 
             if(ctx->success) {
+                furi_string_printf(
+                    ctx->result,
+                    "Found %lu candidate(s)\n"
+                    "Last: %08lX%08lX\n"
+                    "Type:%u Cnt:%04lX\n"
+                    "Saved to user keys",
+                    ctx->candidate_count,
+                    (uint32_t)(ctx->recovered_mfkey >> 32),
+                    (uint32_t)(ctx->recovered_mfkey & 0xFFFFFFFF),
+                    ctx->recovered_type,
+                    ctx->recovered_cnt);
+
+                FlipperFormat* fff = subghz_txrx_get_fff_data(subghz->txrx);
+                flipper_format_rewind(fff);
+
+                char mf_str[20];
+                snprintf(mf_str, sizeof(mf_str), "BF_%07lX", ctx->serial);
+                flipper_format_insert_or_update_string_cstr(fff, "Manufacture", mf_str);
+
+                uint32_t cnt_val = ctx->recovered_cnt;
+                flipper_format_rewind(fff);
+                flipper_format_insert_or_update_uint32(fff, "Cnt", &cnt_val, 1);
+
+                if(ctx->hop2 != 0) {
+                    flipper_format_rewind(fff);
+                    flipper_format_insert_or_update_uint32(fff, "Hop2", &ctx->hop2, 1);
+                }
+
                 if(subghz_path_is_file(subghz->file_path)) {
                     subghz_save_protocol_to_file(
                         subghz,