ITO Yoshiichi ogis-ito

## EncryptUtils.java
package sandbox;

import java.io.ByteArrayOutputStream;
import java.nio.charset.Charset;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

public class EncryptUtils {
	package sandbox;

	import java.io.ByteArrayOutputStream;
	import java.nio.charset.Charset;

	import javax.crypto.Cipher;
	import javax.crypto.spec.SecretKeySpec;

	public class EncryptUtils {