Added login function

Core/Hash.php

@@ -0,0 +1,30 @@
+<?php
+namespace Core;
+
+class Hash
+{
+	public static function make($string, $salt = '')
+	{
+		// return hash('sha256', $string . $salt);
+		// return password_hash($string, PASSWORD_BCRYPT);
+		return crypt($string, $salt);
+	}
+
+	public static function salt()
+	{
+		// return mcrypt_create_iv($length);
+		return uniqid(mt_rand());
+	}
+
+	public static function unique()
+	{
+		return self::make(uniqid());
+	}
+
+	public static function compare($string, $salt, $hash)
+	{
+		// return (Hash::make($string, $salt) === $hash) ? true : false;
+		// return password_verify($string, $hash);
+		return hash_equals($hash, Hash::make($string, $salt));
+	}
+}