AES加密

public class AESUtils {
	public final static String pwd = "1234567890";

	public static String encode(String in) {
		String hex = "";
		try {
			byte[] bytIn = in.getBytes("utf-8");
			SecretKeySpec skeySpec = new SecretKeySpec(
					pwd .getBytes(), "AES");
			Cipher cipher = Cipher.getInstance("AES");
			cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
			byte[] bytOut = cipher.doFinal(bytIn);
			hex = byte2hexString(bytOut);
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
		} catch (NoSuchPaddingException e) {
			e.printStackTrace();
		} catch (InvalidKeyException e) {
			e.printStackTrace();
		} catch (IllegalBlockSizeException e) {
			e.printStackTrace();
		} catch (BadPaddingException e) {
			e.printStackTrace();
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}

		return hex;
	}

	public static String decode(String hex)  {
		String rr = "";

		byte[] bytIn = hex2Bin(hex);

		SecretKeySpec skeySpec = new SecretKeySpec(pwd.getBytes(),
				"AES");
		Cipher cipher;
		try {
			cipher = Cipher.getInstance("AES");
			cipher.init(Cipher.DECRYPT_MODE, skeySpec);
			byte[] bytOut = cipher.doFinal(bytIn);
			rr = new String(bytOut, "utf-8");
		} catch (NoSuchAlgorithmException e1) {
			e1.printStackTrace();
		} catch (NoSuchPaddingException e1) {
			e1.printStackTrace();
		} catch (InvalidKeyException e) {
			e.printStackTrace();
		} catch (IllegalBlockSizeException e) {
			e.printStackTrace();
		} catch (BadPaddingException e) {
			e.printStackTrace();
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		return rr;
	}

	private static byte[] hex2Bin(String src) {
		if (src.length() < 1)
			return null;
		byte[] encrypted = new byte[src.length() / 2];
		for (int i = 0; i < src.length() / 2; i++) {
			int high = Integer.parseInt(src.substring(i * 2, i * 2 + 1), 16);
			int low = Integer.parseInt(src.substring(i * 2 + 1, i * 2 + 2), 16);
			encrypted[i] = (byte) (high * 16 + low);
		}
		return encrypted;
	}

	private static String byte2hexString(byte buf[]) {
		StringBuffer strbuf = new StringBuffer(buf.length * 2);
		int i;
		for (i = 0; i < buf.length; i++) {
			strbuf.append(Integer.toString((buf[i] >> 4) & 0xf, 16)
					+ Integer.toString(buf[i] & 0xf, 16));
		}

		return strbuf.toString();
	}

}