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@@ -0,0 +1,182 @@
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+package cn.efunbox.audio.utils;
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+
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+import org.apache.commons.codec.binary.Hex;
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+import org.apache.commons.lang.StringUtils;
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+
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+import java.io.UnsupportedEncodingException;
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+import java.security.MessageDigest;
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+import java.security.NoSuchAlgorithmException;
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+import java.util.*;
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+
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+/**
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+ * 常見的几种加密方式
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+ */
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+public class Encrypt {
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+
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+ public static final String SIGN = "sign";
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+
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+ public static void main(String[] args) {
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+ Map<String,String> param = new HashMap<>();
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+ param.put("idChannel","1001");
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+ param.put("idDevice","10011");
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+
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+ String ihOTiTyMLDNNLFuP = createSHA256Sign(param, "IhOTiTyMLDNNLFuP");
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+ System.out.println(ihOTiTyMLDNNLFuP);
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+ }
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+
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+
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+ public static String createSHA256Sign(Map<String, String> paramMap, String signKey) {
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+
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+ List<String> sortedKeys = new ArrayList<String>();
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+ for (Map.Entry<String, String> entry : paramMap.entrySet()) {
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+ if (SIGN.equals(entry.getKey())) {
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+ continue;
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+ }
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+
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+ sortedKeys.add(entry.getKey());
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+ }
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+
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+ if (sortedKeys.size() == 0) {
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+ // 没有参数
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+ return "";
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+ }
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+
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+ Collections.sort(sortedKeys);
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+
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+ StringBuffer buff = new StringBuffer("");
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+ for (String key : sortedKeys) {
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+ String val = paramMap.get(key);
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+ if (StringUtils.isBlank(val)) {
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+ continue;
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+ }
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+
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+ buff.append(key).append("=").append(val).append("&");
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+ }
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+
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+ buff.append("key=").append(signKey);
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+
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+ try {
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+ return Encrypt.String2SHA256(buff.toString());
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+ } catch (Exception e) {
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+ throw new RuntimeException("签名错误");
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+ }
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+ }
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+
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+ /**
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+ * MD5加密 生成32位md5码
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+ */
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+ public static String string2MD5(String inStr){
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+ MessageDigest md5 = null;
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+ try{
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+ md5 = MessageDigest.getInstance("MD5");
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+ }catch (Exception e){
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+ System.out.println(e.toString());
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+ e.printStackTrace();
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+ return "";
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+ }
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+ char[] charArray = inStr.toCharArray();
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+ byte[] byteArray = new byte[charArray.length];
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+
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+ for (int i = 0; i < charArray.length; i++)
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+ byteArray[i] = (byte) charArray[i];
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+ byte[] md5Bytes = md5.digest(byteArray);
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+ StringBuffer hexValue = new StringBuffer();
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+ for (int i = 0; i < md5Bytes.length; i++){
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+ int val = ((int) md5Bytes[i]) & 0xff;
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+ if (val < 16)
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+ hexValue.append("0");
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+ hexValue.append(Integer.toHexString(val));
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+ }
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+ return hexValue.toString().toUpperCase();
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+ }
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+ /**
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+ * SHA1加密
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+ * @param str
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+ * @return
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+ */
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+ public static String string2Sha1(String str){
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+ if(str==null||str.length()==0){
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+ return null;
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+ }
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+ char hexDigits[] = {'0','1','2','3','4','5','6','7','8','9',
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+ 'a','b','c','d','e','f'};
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+ try {
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+ MessageDigest mdTemp = MessageDigest.getInstance("SHA1");
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+ mdTemp.update(str.getBytes("UTF-8"));
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+
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+ byte[] md = mdTemp.digest();
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+ int j = md.length;
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+ char buf[] = new char[j*2];
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+ int k = 0;
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+ for (int i = 0; i < j; i++) {
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+ byte byte0 = md[i];
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+ buf[k++] = hexDigits[byte0 >>> 4 & 0xf];
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+ buf[k++] = hexDigits[byte0 & 0xf];
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+ }
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+ return new String(buf);
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+ } catch (Exception e) {
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+ // TODO: handle exception
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+ return null;
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+ }
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+ }
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+
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+ /**
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+ * 利用Apache的工具类实现SHA-256加密
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+ * 所需jar包下載 http://pan.baidu.com/s/1nuKxYGh
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+ * @param str 加密后的报文
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+ * @return
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+ */
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+ public static String String2SHA256(String str){
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+ MessageDigest messageDigest;
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+ String encdeStr = "";
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+ try {
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+ messageDigest = MessageDigest.getInstance("SHA-256");
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+ byte[] hash = messageDigest.digest(str.getBytes("UTF-8"));
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+ encdeStr = Hex.encodeHexString(hash);
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+ } catch (NoSuchAlgorithmException e) {
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+ e.printStackTrace();
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+ } catch (UnsupportedEncodingException e) {
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+ e.printStackTrace();
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+ }
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+ return encdeStr;
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+ }
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+ //---------
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+ /**
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+ * 利用java原生的摘要实现SHA256加密
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+ * @param str 加密后的报文
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+ * @return
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+ */
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+ public static String String2SHA256StrJava(String str){
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+ MessageDigest messageDigest;
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+ String encodeStr = "";
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+ try {
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+ messageDigest = MessageDigest.getInstance("SHA-256");
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+ messageDigest.update(str.getBytes("UTF-8"));
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+ encodeStr = byte2Hex(messageDigest.digest());
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+ } catch (NoSuchAlgorithmException e) {
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+ e.printStackTrace();
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+ } catch (UnsupportedEncodingException e) {
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+ e.printStackTrace();
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+ }
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+ return encodeStr;
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+ }
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+
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+ /**
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+ * 将byte转为16进制
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+ * @param bytes
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+ * @return
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+ */
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+ private static String byte2Hex(byte[] bytes){
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+ StringBuffer stringBuffer = new StringBuffer();
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+ String temp = null;
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+ for (int i=0;i<bytes.length;i++){
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+ temp = Integer.toHexString(bytes[i] & 0xFF);
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+ if (temp.length()==1){
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+ //1得到一位的进行补0操作
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+ stringBuffer.append("0");
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+ }
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+ stringBuffer.append(temp);
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+ }
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+ return stringBuffer.toString();
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+ }
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+}
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