Added XOR encryption

project/backend/manager.c

@@ -37,7 +37,7 @@ char** split_string(const char* str, char delimiter, int* count) {
 }
 void manager_loadnames(Manager* manager){
     // Loading the names of all passwords
-    char* data = store_load("Data");
+    char* data = secure_storage_load(manager->secure_storage, "Data");
 
     // Do we not have any passwords?
     if (!data) {
@@ -90,6 +90,7 @@ Manager* manager_init() {
     Manager* result = malloc(sizeof(Manager));
 
     // Setting variables
+    result->secure_storage = secure_storage_init("password");
     result->count = 0;
 
     // Loading all names on start
@@ -100,9 +101,9 @@ Manager* manager_init() {
 }
 
 // Functions
-void manager_savepass(Password* pass) {
+void manager_savepass(Manager* manager, Password* pass) {
     // Our resulting string
-    char* result = store_load("Data");
+    char* result = secure_storage_load(manager->secure_storage, "Data");
 
     // Is the result empty?
     if(!result) {
@@ -115,7 +116,7 @@ void manager_savepass(Password* pass) {
         // Saving the data
         char* data = malloc(sizeof(char) * furi_string_size(n_result));
         strcpy(data, furi_string_get_cstr(n_result));
-        store_save("Data", data);
+        secure_storage_save(manager->secure_storage, "Data", data);
 
         // Cleanup
         furi_string_free(n_result);
@@ -130,7 +131,7 @@ void manager_savepass(Password* pass) {
         // Saving the data
         char* data = malloc(sizeof(char) * furi_string_size(new_result));
         strcpy(data, furi_string_get_cstr(new_result));
-        store_save("Data", data);
+        secure_storage_save(manager->secure_storage, "Data", data);
 
         // Cleanup
         furi_string_free(new_result);
@@ -151,7 +152,7 @@ void manager_loadpass(Manager* manager, char* name) {
     FURI_LOG_D(TAG, "Loading password of name %s", name);
 
     // Loading password string
-    char* data = store_load("Data");
+    char* data = secure_storage_load(manager->secure_storage, "Data");
 
     // Splitting string
     int count = 0;

project/backend/manager.h

@@ -7,13 +7,14 @@
 
 #include "base.h"
 #include "pass.h"
-#include "store.h"
+#include "secure.h"
 
 // Structures
 typedef struct {
     Password* current;
     Password* new;
 
+    SecureStorage* secure_storage;
     char** names;
     int count;
 } Manager;
@@ -22,7 +23,7 @@ typedef struct {
 Manager* manager_init();
 
 // Functions
-void manager_savepass(Password* pass);
+void manager_savepass(Manager* manager, Password* pass);
 void manager_loadpass(Manager* manager, char* name);
 void manager_free(Manager* manager);
 

project/backend/pass.h

@@ -3,7 +3,6 @@
 #define H_PASS
 
 // Libraries
-#include "store.h"
 
 // Structures
 typedef struct {

project/backend/secure.c

@@ -0,0 +1,59 @@
+// Header
+#include "secure.h"
+
+// Constructors
+SecureStorage* secure_storage_init(char* key){
+    // Creating memory for secure storage
+    SecureStorage* result = malloc(sizeof(SecureStorage));
+
+    // Setting key
+    result->key = key;
+
+    // Return result
+    return result;
+}
+
+// Functions
+void xor_encrypt_decrypt(char* data, char* key){
+    size_t data_len = strlen(data);
+    size_t key_len = strlen(key);
+
+    for (size_t i = 0; i < data_len; ++i) {
+        data[i] ^= key[i % key_len];
+    }
+}
+
+char* secure_storage_load(SecureStorage* secure_storage, char* tag){
+    /* 
+        Currently, We will use XOR encryption & XOR decryption. 
+        Not too secure but it's simple.
+    */
+
+    // Loading data from storage
+    char* data = store_load(tag);
+
+    // Is the data empty?
+    if (!data) {
+        FURI_LOG_D(TAG, "Decrypting... Nothing?");
+        return NULL;
+    }
+
+    // Decrypting it
+    xor_encrypt_decrypt(data, secure_storage->key);
+
+    FURI_LOG_D(TAG, "Decrypted: %s", data);
+
+    // Returning result
+    return data; 
+}
+void secure_storage_save(SecureStorage* secure_storage, char* tag, char* data){
+    // Encrypting data
+    xor_encrypt_decrypt(data, secure_storage->key);
+
+    // Saving it
+    store_save(tag, data);
+}
+void secure_storage_free(SecureStorage* secure_storage){
+    free(secure_storage->key);
+    free(secure_storage);
+}

project/backend/secure.h

@@ -0,0 +1,21 @@
+// Define once
+#ifndef H_SECURE
+#define H_SECURE
+
+// Libraries
+#include "store.h"
+
+// Structures
+typedef struct {
+    char* key;
+} SecureStorage;
+
+// Constructors
+SecureStorage* secure_storage_init(char* key);
+
+// Functions
+char* secure_storage_load(SecureStorage* secure_storage, char* tag);
+void secure_storage_save(SecureStorage* secure_storage, char* tag, char* data);
+void secure_storage_free(SecureStorage* secure_storage);
+
+#endif

project/ui/scenes/create.c

@@ -134,7 +134,7 @@ bool FP_Scene_Event_Create(void* context, SceneManagerEvent event) {
             break;
         case FP_Scene_Create_Event_Done:
             // Save the password
-            manager_savepass(app->manager->new);
+            manager_savepass(app->manager, app->manager->new);
 
             // Reload manager
             manager_free(app->manager);