package test; import com.alibaba.fastjson.JSONObject; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; import javax.crypto.Cipher; import javax.crypto.SecretKey; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.DESKeySpec; import org.apache.commons.lang.StringUtils; import java.io.IOException; import java.net.URLEncoder; import java.security.SecureRandom; public class FpayEncryTool { private final static String ENCODE = "GBK"; private final static String DES = "DES"; private final static int keyLengthMax=24; //对数据进行加密 //type:pay,refund public static String encryFpayData(String key,String data) throws Exception { //将数据转为json验证数据有效性 JSONObject jsonStr = JSONObject.parseObject(data); if(jsonStr.get("type").equals("pay")){ if(jsonStr.get("order_amount")==null||!StringUtils.isNumeric(jsonStr.get("order_amount").toString())){ return null; } if(jsonStr.get("product_name")==null||(jsonStr.get("product_name")).toString().length()>100){ return null; } if(jsonStr.get("order_info")==null||(jsonStr.get("order_info")).toString().length()>100){ return null; } if(jsonStr.get("auth_code")==null||(jsonStr.get("auth_code")).toString().length()>128){ return null; } if(jsonStr.get("order_no")==null||(jsonStr.get("order_no")).toString().length()>30){ return null; } }else if(jsonStr.get("type").equals("refund")){ if(jsonStr.get("order_no")==null||(jsonStr.get("order_no")).toString().length()>30){ return null; } if(jsonStr.get("ref_desc")==null||(jsonStr.get("ref_desc")).toString().length()>30){ return null; } }else if(jsonStr.get("type").equals("result")){ }else{ return null; } return encrypt(data, key); } //对数据进行解密 public static String decrypFpayData(String key,String data) throws Exception { return decrypt(data,key); } /** * Description 根据键值进行加密 * @param data 待加密数据 * @param key 密钥 * @return * @throws Exception */ public static String encrypt(String data, String key) throws Exception { byte[] bt = encrypt(data.getBytes(ENCODE), key.getBytes(ENCODE)); String strs = new BASE64Encoder().encode(bt); return strs; } /** * 根据键值进行解密 * @param data 待解密数据 * @param key 密钥 * @return * @throws IOException * @throws Exception */ public static String decrypt(String data, String key) throws IOException, Exception { if (data == null) return null; BASE64Decoder decoder = new BASE64Decoder(); byte[] buf = decoder.decodeBuffer(data); byte[] bt = decrypt(buf, key.getBytes(ENCODE)); return new String(bt, ENCODE); } /** * Description 根据键值进行加密 * * @param data * @param key * 加密键byte数组 * @return * @throws Exception */ private static byte[] encrypt(byte[] data, byte[] key) throws Exception { key=extendKey(key); // 生成一个可信任的随机数源 SecureRandom sr = new SecureRandom(); // 从原始密钥数据创建DESKeySpec对象 DESKeySpec dks = new DESKeySpec(key); // 创建一个密钥工厂，然后用它把DESKeySpec转换成SecretKey对象 SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES); SecretKey securekey = keyFactory.generateSecret(dks); // Cipher对象实际完成加密操作 Cipher cipher = Cipher.getInstance(DES); // 用密钥初始化Cipher对象 cipher.init(Cipher.ENCRYPT_MODE, securekey, sr); return cipher.doFinal(data); } public static byte[] extendKey(byte[] key) { //System.out.println("length:"+key.length); byte[] tmpKey = new byte[keyLengthMax]; if (key.length < keyLengthMax) { // short key ? .. extend to 24 byte key int i;int iMax=(int)(keyLengthMax/key.length);int iRem=(int)(keyLengthMax%key.length); System.arraycopy(key, 0, tmpKey, 0,iRem+1); //System.out.println(" begI:"+0+" endI:"+(iRem)); for(i=0;i<iMax;i++) { //System.out.println("i:"+i+" begI:"+(i*key.length+iRem)+" endI:"+(i*key.length+iRem+key.length)); //System.out.println("keyL:"+key.length+" temL:"+tmpKey.length); System.arraycopy(key, 0, tmpKey, i*key.length+iRem, key.length); } }else { System.arraycopy(key, 0, tmpKey, 0,keyLengthMax); } return tmpKey; } /** * Description 根据键值进行解密 * * @param data * @param key 加密键byte数组 * @return * @throws Exception */ private static byte[] decrypt(byte[] data, byte[] key) throws Exception { key=extendKey(key); // 生成一个可信任的随机数源 SecureRandom sr = new SecureRandom(); // 从原始密钥数据创建DESKeySpec对象 DESKeySpec dks = new DESKeySpec(key); // 创建一个密钥工厂，然后用它把DESKeySpec转换成SecretKey对象 SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES); SecretKey securekey = keyFactory.generateSecret(dks); // Cipher对象实际完成解密操作 Cipher cipher = Cipher.getInstance(DES); // 用密钥初始化Cipher对象 cipher.init(Cipher.DECRYPT_MODE, securekey, sr); return cipher.doFinal(data); } public static void main(String[] args){ /*String data = "12AUism810jsqASI08"; String key ="qwerrewq"; System.out.println("加密前===>"+data); try { //System.err.println(encrypt(data, key)); //System.err.println(decrypt(encrypt(data, key), key)); String jiamihou = encrypt(data,key); System.out.println("加密后===>"+jiamihou); System.out.println("解密后===>"+decrypt(jiamihou,key)); } catch (Exception e) { e.printStackTrace(); }*/ String temp; // temp="{'order_amount':'1','product_name':'测试','order_info':'测试加解密','auth_code':'285192674239050687','order_no':'201905140953','type':'pay'}"; temp="{'order_no':'TY_YH_ali_1557814483393_61','ref_desc':'测试退款退款','type':'refund'}"; String key="544646"; String str1=null; String str2=null; try { str1=FpayEncryTool.encryFpayData(key,temp); str2=FpayEncryTool.decrypFpayData(key,str1); } catch (Exception e) { e.printStackTrace(); } JSONObject jsonStr = JSONObject.parseObject(str2); System.out.println("str1:"+str1); System.out.println("str1转译:"+URLEncoder.encode(str1)); System.out.println("str2:"+str2); System.out.println("type:"+jsonStr.get("type")); } //将结果对特殊字符转译 }
打印结果如下
打印结果: str1:obbHcSjVYQ3rA1CTMYObuFd9zGSvMgfItZGv9MjceSPJa+0HQh1gC/PtgjOsodOxgyaudtddP2Dk NfiiDN/w0SK6PGpPD9PgTZQiAF4AKvUea29Bae/B2Q== str1转译:obbHcSjVYQ3rA1CTMYObuFd9zGSvMgfItZGv9MjceSPJa%2B0HQh1gC%2FPtgjOsodOxgyaudtddP2Dk%0D%0ANfiiDN%2Fw0SK6PGpPD9PgTZQiAF4AKvUea29Bae%2FB2Q%3D%3D str2:{'order_no':'TY_YH_ali_1557814483393_61','ref_desc':'测试退款退款','type':'refund'} type:refund
如果通过post发送数据,记得转码
