package?ASE;


import?java.util.Formatter;

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

public?class?AesEntryDetry?{
	//?加密秘鑰?，16個字節也就是128?bit
	private?static?final?byte[]?AES_KEY?=?{?1?2?3?4?5?6?7?8?9?10?11
			12?13?14?15?16?};

	//?需要加密的數據（保證16個字節，不夠的自己填充）
	private?static?final?byte[]?SOURCE_BUF?=?{?1?2?3?4?5?6?7?8?9?10
			11?12?13?14?15?16?};

	//?Java測試工程入口方法，在這個方法中調用加解密方法并打印結果
	public?static?void?main（String[]?args）?throws?Exception?{
		//?需要加密的原始數據轉化成字符串并打印到控制臺
		String?strSource?=?BytetohexString（SOURCE_BUF）;
		System.out.println（“source:\n“?+?strSource）;

		//?調用加密方法，對數據進行加密，加密后的數據存放到encryBuf字節數組中
		byte[]?encryBuf?=?encrypt（AES_KEY?SOURCE_BUF）;
		//?將加密后的字節數組數據轉成字符串并打印到控制臺
		String?strEncry?=?BytetohexString（encryBuf）.toLowerCase（）;
		System.out.println（“encrypte:\n“?+?strEncry）;

		//?調用解密方法，對數據進行解密，解密后的數據存放到decryBuf字節數組中
		byte[]?decryBuf?=?decrypt（AES_KEY?encryBuf）;
		//?將解密后的字節數組數據轉成字符串并打印到控制臺
		String?strDecry?=?BytetohexString（decryBuf）;
		System.out.println（“decrypte:\n“?+?strDecry）;

	}

	//?加密方法
	private?static?byte[]?encrypt（byte[]?key?byte[]?clear）?throws?Exception?{
		SecretKeySpec?skeySpec?=?new?SecretKeySpec（key?“AES“）;
		Cipher?cipher?=?Cipher.getInstance（“AES/ECB/NoPadding“）;
		cipher.init（Cipher.ENCRYPT_MODE?skeySpec）;
		byte[]?encrypted?=?cipher.doFinal（clear）;
		return?encrypted;
	}

	//?解密方法
	private?static?byte[]?decrypt（byte[]?key?byte[]?encrypted）
			throws?Exception?{
		SecretKeySpec?skeySpec?=?new?SecretKeySpec（key?“AES“）;
		Cipher?cipher?=?Cipher.getInstance（“AES/ECB/NoPadding“）;
		cipher.init（Cipher.DECRYPT_MODE?skeySpec）;
		byte[]?decrypted?=?cipher.doFinal（encrypted）;
		return?decrypted;
	}

	//?字節數組按照一定格式轉換拼裝成字符串用于打印顯示
	private?static?String?BytetohexString（byte[]?b）?{
		int?len?=?b.length;
		StringBuilder?sb?=?new?StringBuilder（b.length?*?（2?+?1））;
		Formatter?formatter?=?new?Formatter（sb）;

		for?（int?i?=?0;?i?			if?（i?				formatter.format（“0x%02X:“?b[i]）;
			else
				formatter.format（“0x%02X“?b[i]）;

		}
		formatter.close（）;

		return?sb.toString（）;
	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????301??2016-10-24?23:24??AdvancedEncryptionStandard\.classpath

?????文件????????402??2016-10-24?23:24??AdvancedEncryptionStandard\.project

?????文件????????629??2016-10-24?23:24??AdvancedEncryptionStandard\.settings\org.eclipse.jdt.core.prefs

?????文件???????2849??2016-11-07?23:53??AdvancedEncryptionStandard\bin\ASE\AesEntryDetry.class

?????文件???????3493??2016-11-07?23:54??AdvancedEncryptionStandard\bin\ASE\EncrypAES.class

?????文件????????856??2016-10-25?23:53??AdvancedEncryptionStandard\bin\ASE\MessyCode.class

?????文件???????4175??2016-10-25?23:57??AdvancedEncryptionStandard\bin\ASE\Windows.class

?????文件??????41174??2016-10-26?00:06??AdvancedEncryptionStandard\image\AES.jpg

?????文件???????2413??2016-11-07?23:53??AdvancedEncryptionStandard\src\ASE\AesEntryDetry.java

?????文件???????3659??2016-11-07?23:54??AdvancedEncryptionStandard\src\ASE\EncrypAES.java

?????文件????????601??2016-10-25?23:53??AdvancedEncryptionStandard\src\ASE\MessyCode.java

?????文件???????4229??2016-10-25?23:57??AdvancedEncryptionStandard\src\ASE\Windows.java

?????目錄??????????0??2016-11-07?23:53??AdvancedEncryptionStandard\bin\ASE

?????目錄??????????0??2016-11-07?23:53??AdvancedEncryptionStandard\src\ASE

?????目錄??????????0??2016-10-24?23:24??AdvancedEncryptionStandard\.settings

?????目錄??????????0??2016-10-25?23:52??AdvancedEncryptionStandard\bin

?????目錄??????????0??2016-10-26?00:06??AdvancedEncryptionStandard\image

?????目錄??????????0??2016-10-25?23:52??AdvancedEncryptionStandard\src

?????目錄??????????0??2016-10-25?23:53??AdvancedEncryptionStandard

-----------?---------??----------?-----??----

????????????????64781????????????????????19