diff --git a/src/AES.php b/src/AES.php
new file mode 100644
index 0000000..2c81f2a
--- /dev/null
+++ b/src/AES.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace encrypt;
+
+interface AES
+{
+    public function password(string $password): AES;
+
+    public function encrypt(?array $data, string $password): string;
+
+    public function decrypt(string $data, string $password): ?array;
+}
diff --git a/src/RSA.php b/src/RSA.php
new file mode 100644
index 0000000..8426cf8
--- /dev/null
+++ b/src/RSA.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace encrypt;
+
+interface RSA
+{
+    public function publicKey(): string;
+
+    public function privateKey(): string;
+
+    public function encrypt(?array $data): string;
+
+    public function decrypt(string $data): ?array;
+}
diff --git a/src/classes/AES.php b/src/classes/AES.php
new file mode 100644
index 0000000..4a995d3
--- /dev/null
+++ b/src/classes/AES.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace encrypt\classes;
+
+class AES implements \encrypt\AES
+{
+    
+}
diff --git a/src/classes/RSA.php b/src/classes/RSA.php
new file mode 100644
index 0000000..0cdcf39
--- /dev/null
+++ b/src/classes/RSA.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace encrypt\classes;
+
+class RSA implements \encrypt\RSA
+{
+    
+}