Now initializes a path in memory

src_features/signMessageEIP712/path.c

@@ -0,0 +1,22 @@
+#include <stdint.h>
+#include <string.h>
+#include "path.h"
+#include "mem.h"
+#include "context.h"
+
+uint8_t  *path_indexes;
+
+/**
+ * Allocates the the path indexes in memory and sets them all to 0 with a count of 1.
+ */
+bool    init_path(void)
+{
+    // + 1 for the used index count
+    if ((path_indexes = mem_alloc(sizeof(uint8_t) * (MAX_PATH_DEPTH + 1))) != NULL)
+    {
+        // set all to 0
+        explicit_bzero(path_indexes + 1, sizeof(uint8_t) * MAX_PATH_DEPTH);
+        *path_indexes = 1; // init count at 1, so the default path will be 0
+    }
+    return path_indexes != NULL;
+}