Key generation, saving and loading works.

side-node/src/utils.rs

@@ -0,0 +1,15 @@
+use std::path::PathBuf;
+
+pub(crate) const KEY_FILE: &str = "keys.pem";
+pub(crate) const CONFIG_FILE: &str = "config.toml";
+
+/// Returns the path to the key file for this host OS.
+pub(crate) fn side_paths(prefix: PathBuf) -> (PathBuf, PathBuf) {
+    let mut key_path = prefix.clone();
+    key_path.push(KEY_FILE);
+
+    let mut config_path = prefix.clone();
+    config_path.push(CONFIG_FILE);
+
+    (key_path, config_path)
+}