diff --git a/sample.php b/sample.php
deleted file mode 100644
index aa19577..0000000
--- a/sample.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-$key_pair = openssl_pkey_new(array(
-    'private_key_bits' => 2048,  // 秘密鍵のビット数
-    'private_key_type' => OPENSSL_KEYTYPE_RSA // RSA秘密鍵を生成
-));
-
-// 秘密鍵を取得する
-openssl_pkey_export($key_pair, $private_key);
-
-echo $private_key;
-?>
\ No newline at end of file