AES加解密

package com.ai.runner.center.bmc.util;import java.io.UnsupportedEncodingException;import java.security.InvalidAlgorithmParameterException;import java.security.InvalidKeyException;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import java.security.SecureRandom;import javax.crypto.BadPaddingException;import javax.crypto.Cipher;import javax.crypto.IllegalBlockSizeException;import javax.crypto.NoSuchPaddingException;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;import org.apache.commons.codec.binary.Base64;import org.apache.commons.lang.StringUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * 加解密工具类 Date: 2017年02月12日 <br> *  * @author zhoushanbin *  */public final class CryptoUtils {private static Logger LOG = LoggerFactory.getLogger(CryptoUtils.class);/** * aes 加密模式为AES/CBC/PKCS5Padding */public static final String AES_CBC_PAD = "AES/CBC/PKCS5Padding";/** * AES */public static final String AES = "AES";/** * 初始化向量长度 */public static final int IV_LENGTH = 16;/** * 编码方式 */public static final String UTF_8 = "utf-8";/** * 工作密钥 16字节数组 */public static final byte[] WORK_KEY = { (byte) 0x11, (byte) 0x22,(byte) 0x33, (byte) 0x22, (byte) 0x13, (byte) 0xff, (byte) 0xee,(byte) 0x44, (byte) 0xaa, (byte) 0xcc, (byte) 0x16, (byte) 0x57,(byte) 0x00, (byte) 0x40, (byte) 0xba, (byte) 0xbe, };/** * 加密 * @param content * @return */public static String encrypt(String content) {if(StringUtils.isEmpty(content)){return null;}SecretKeySpec skeySpec = new SecretKeySpec(WORK_KEY, AES);Cipher cipher = null;byte []result  = null;String afCnt = null;try {cipher = Cipher.getInstance(AES_CBC_PAD);byte []iv = getIv();IvParameterSpec ivSpec = new IvParameterSpec(iv);cipher.init(Cipher.ENCRYPT_MODE, skeySpec, ivSpec);byte[] cnt = cipher.doFinal(content.getBytes());result = new byte[cnt.length+IV_LENGTH];System.arraycopy(iv, 0, result, 0, iv.length);System.arraycopy(cnt, 0, result, IV_LENGTH, cnt.length);afCnt = new String(Base64.encodeBase64(result),UTF_8);} catch (NoSuchAlgorithmException e) {LOG.error("加密失败",e);} catch (NoSuchPaddingException e) {LOG.error("加密失败",e);} catch (InvalidKeyException e) {LOG.error("加密失败",e);} catch (InvalidAlgorithmParameterException e) {LOG.error("加密失败",e);} catch (IllegalBlockSizeException e) {LOG.error("加密失败",e);} catch (BadPaddingException e) {LOG.error("加密失败",e);} catch (UnsupportedEncodingException e) {LOG.error("加密失败",e);}return afCnt;}/** * 解密 * @param content * @return */public static String decrypt(String content) {if(StringUtils.isEmpty(content)){return null;}try {byte[] acnt = content.getBytes(UTF_8);byte[] bcnt = Base64.decodeBase64(acnt);byte []iv = new byte[IV_LENGTH];byte []cnt = new byte[bcnt.length-IV_LENGTH];System.arraycopy(bcnt, 0, iv, 0, IV_LENGTH); System.arraycopy(bcnt, IV_LENGTH, cnt, 0, bcnt.length-IV_LENGTH);//进行解密操作SecretKeySpec skeySpec = new SecretKeySpec(WORK_KEY, AES);Cipher cipher = Cipher.getInstance(AES_CBC_PAD);IvParameterSpec ivSpec = new IvParameterSpec(iv);cipher.init(Cipher.DECRYPT_MODE, skeySpec, ivSpec);byte[] original = cipher.doFinal(cnt);return new String(original,UTF_8);} catch (UnsupportedEncodingException e) {LOG.error("加密失败",e);} catch (NoSuchAlgorithmException e) {LOG.error("加密失败",e);} catch (NoSuchPaddingException e) {LOG.error("加密失败",e);} catch (InvalidKeyException e) {LOG.error("加密失败",e);} catch (InvalidAlgorithmParameterException e) {LOG.error("加密失败",e);} catch (IllegalBlockSizeException e) {LOG.error("加密失败",e);} catch (BadPaddingException e) {LOG.error("加密失败",e);}return null;}/** * 获取初始化向量 16个字节 * @return */private static byte[] getIv(){SecureRandom random = new SecureRandom();byte []iv = new byte[IV_LENGTH];random.nextBytes(iv);return iv;}    public static String getMd5(String str) {    MessageDigest md5;    StringBuilder sb = new StringBuilder(40);try {md5 = MessageDigest.getInstance("MD5");byte[] bs = md5.digest(str.getBytes());        for(byte x:bs) {if((x & 0xff)>>4 == 0) {sb.append("0").append(Integer.toHexString(x & 0xff));} else {sb.append(Integer.toHexString(x & 0xff));}}} catch (NoSuchAlgorithmException e) {LOG.error("获取MD5失败",e);}        return sb.toString().toUpperCase();    }        public static String getMd5(String str,int iterations){    if(iterations <= 1){    return getMd5(str);    }    for(int i=1;i<=iterations;i++){    str = getMd5(str);    }    return str;    }    public static void main(String args[]){System.out.println(getMd5("0",10000));System.out.println(getMd5("qws3@!@#",1));System.out.println(getMd5("qws3@!@#",2));System.out.println(getMd5("qws3@!@#",3));}}