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));
}
}
