diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3ac0c91..451cecf 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -20,4 +20,5 @@
 - Reysekha
 - igrzhukovich
 - CinnamonXI
-- AkasakaID
\ No newline at end of file
+- AkasakaID
+- mrtampan
diff --git a/src/PHP/signaturetwice.php b/src/PHP/signaturetwice.php
new file mode 100644
index 0000000..1652050
--- /dev/null
+++ b/src/PHP/signaturetwice.php
@@ -0,0 +1,22 @@
+<?php
+
+// membuat signature by member twice hehe
+
+// encrypt
+$pass = "pagikucerah";
+$secret = "Jihyo/Nayeon/Jeongyeon/Momo/Sana/Mina/Dahyun/Chaeyoung/Tzuyu"
+$lockSig = hash_hmac('sha256', $pass, $secret);
+echo $lockSig;
+
+
+//descrypt
+$pass = "masukan kode encrypt nya";
+$secret = "Jihyo/Nayeon/Jeongyeon/Momo/Sana/Mina/Dahyun/Chaeyoung/Tzuyu"
+$unlockSig = hash_hmac('sha256', $pass, $secret);
+echo $unlockSig;
+
+// end membuat signature
+
+
+
+?>