import java.io.UnsupportedEncodingException;

import java.security.InvalidKeyException;

import java.security.NoSuchAlgorithmException;

import java.security.SecureRandom;

import javax.crypto.BadPaddingException;

import javax.crypto.Cipher;

import javax.crypto.IllegalBlockSizeException;

import javax.crypto.KeyGenerator;

import javax.crypto.NoSuchPaddingException;

import javax.crypto.SecretKey;

import javax.crypto.spec.SecretKeySpec;

import org.apache.axis.encoding.Base64;

public class AES {

	private static int length=128;

	/**

	 * 加密

	 *

	 * @param content

	 *            需要加密的内容

	 * @param password

	 *            加密密码

	 * @return

	 * @throws NoSuchAlgorithmException

	 * @throws NoSuchPaddingException

	 * @throws UnsupportedEncodingException

	 * @throws InvalidKeyException

	 * @throws BadPaddingException

	 * @throws IllegalBlockSizeException

	 */

	private static byte[] encrypt(String content, String password)

			throws Exception {

		KeyGenerator kgen = KeyGenerator.getInstance("AES");

                SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG" );

                secureRandom.setSeed(password.getBytes());

		kgen.init(length, secureRandom);

		SecretKey secretKey = kgen.generateKey();

		byte[] enCodeFormat = secretKey.getEncoded();

		SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");

		Cipher cipher = Cipher.getInstance("AES");// 创建密码器

		byte[] byteContent = content.getBytes("utf-8");

		cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化

		byte[] result = cipher.doFinal(byteContent);

		return result; // 加密

	}

	/**

	 * 解密

	 *

	 * @param content

	 *            待解密内容

	 * @param password

	 *            解密密钥

	 * @return

	 */

	private static byte[] decrypt(byte[] content, String password)

			throws Exception {

		KeyGenerator kgen = KeyGenerator.getInstance("AES");

                 SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG" );

                  secureRandom.setSeed(password.getBytes());

		kgen.init(length, secureRandom);

		SecretKey secretKey = kgen.generateKey();

		byte[] enCodeFormat = secretKey.getEncoded();

		SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");

		Cipher cipher = Cipher.getInstance("AES");// 创建密码器

		cipher.init(Cipher.DECRYPT_MODE, key);// 初始化

		byte[] result = cipher.doFinal(content);

		return result; // 加密

	}

//	/**

//	 * 将二进制转换成16进制

//	 *

//	 * @param buf

//	 * @return

//	 */

//	public static String parseByte2HexStr(byte buf[]) {

//		StringBuffer sb = new StringBuffer();

//		for (int i = 0; i < buf.length; i++) {

//			String hex = Integer.toHexString(buf[i] & 0xFF);

//			if (hex.length() == 1) {

//				hex = '0' + hex;

//			}

//			sb.append(hex.toUpperCase());

//		}

//		return sb.toString();

//	}

//

//	/**

//	 * 将16进制转换为二进制

//	 *

//	 * @param hexStr

//	 * @return

//	 */

//	public static byte[] parseHexStr2Byte(String hexStr) {

//		if (hexStr.length() < 1)

//			return null;

//		byte[] result = new byte[hexStr.length() / 2];

//		for (int i = 0; i < hexStr.length() / 2; i++) {

//			int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);

//			int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2),

//					16);

//			result[i] = (byte) (high * 16 + low);

//		}

//		return result;

//	}

	/**

	 * 加密

	 *

	 * @param content

	 *            需要加密的内容

	 * @param password

	 *            加密密码

	 * @return

	 */

	public static byte[] encrypt2(String content, String password) {

		try {

			SecretKeySpec key = new SecretKeySpec(password.getBytes(), "AES");

			Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");

			byte[] byteContent = content.getBytes("utf-8");

			cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化

			byte[] result = cipher.doFinal(byteContent);

			return result; // 加密

		} catch (NoSuchAlgorithmException e) {

			e.printStackTrace();

		} catch (NoSuchPaddingException e) {

			e.printStackTrace();

		} catch (InvalidKeyException e) {

			e.printStackTrace();

		} catch (UnsupportedEncodingException e) {

			e.printStackTrace();

		} catch (IllegalBlockSizeException e) {

			e.printStackTrace();

		} catch (BadPaddingException e) {

			e.printStackTrace();

		}

		return null;

	}

	public static String encrypt2Str(String content, String password) throws Exception {

		byte[] encryptResult = encrypt(content, password);

		return Base64.encode(encryptResult);

	}

	public static String decrypt2Str(String content, String password) throws Exception {

		byte[] decryptResult = decrypt(Base64.decode(content), password);

		return new String(decryptResult,"UTF-8");

	}

	public static void main(String[] args) throws Exception {

		String content = "t太阳est地";

		String password = "12345678";

		// 加密

		System.out.println("加密前：" + content);

		String tt4 = encrypt2Str(content, password);

		System.out.println(new String(tt4));

		// 解密

		String d = decrypt2Str(tt4, password);

		System.out.println("解密后：" + d);

//		加密前：t太阳est地

//		Bpf0jyJDj/pVHaRf66+OMA==

//		解密后：t太阳est地

	}

}