读书人IT频道reader8.net/exam/jisuanji/ 　　package com.rsa;
　　import java.security.InvalidAlgorithmParameterException;
　　import java.security.InvalidKeyException;
　　import java.security.NoSuchAlgorithmException;
　　import java.security.SecureRandom;
　　import java.security.spec.AlgorithmParameterSpec;
　　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.IvParameterSpec;
　　public class AESEncrypter {
　　public static byte[] iv = new byte[] { 82, 22, 50, 44, -16, 124, -40, -114, -87, -40, 37, 23, -56, 23, -33, 75 };
　　private static AESEncrypter aes = null;
　　public static byte[] key1 = new byte[] { -42, 35, 67, -86, 19, 29, -11, 84, 94, 111, 75, -104, 71, 46, 86, -21, -119, 110, -11, -32, -28, 91, -33, -46, 99, 49, 2, 66, -101, -11, -8, 56 };
　　private AESEncrypter() {
　　}
　　public static synchronized AESEncrypter getInstance() {
　　if (aes == null) {
　　aes = new AESEncrypter();
　　}
　　return aes;
　　}
　　public String encrypt(String msg) {
　　String str = "";
　　try {
　　KeyGenerator kgen = KeyGenerator.getInstance("AES");
　　kgen.init(128, new SecureRandom(key1));
　　AlgorithmParameterSpec paramSpec = new IvParameterSpec(iv);
　　SecretKey key = kgen.generateKey();
　　Cipher ecipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
　　ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
　　str = asHex(ecipher.doFinal(msg.getBytes()));
　　} catch (BadPaddingException e) {
　　e.printStackTrace();
　　} catch (NoSuchAlgorithmException e) {
　　e.printStackTrace();
　　} catch (NoSuchPaddingException e) {
　　e.printStackTrace(); 读书人IT频道reader8.net/exam/jisuanji/