5.SHA1加密
//sha1加密 public static String getSha1(String str){ if(str==null||str.length()==0){ return null; } char hexDigits[] = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'}; try { MessageDigest mdTemp = MessageDigest.getInstance(SHA1); mdTemp.update(str.getBytes(UTF-8)); byte[] md = mdTemp.digest(); int j = md.length; char buf[] = new char[j*2]; int k = 0; for (int i = 0; i < j; i++) { byte byte0 = md[i]; buf[k++] = hexDigits[byte0 >>> 4 & 0xf]; buf[k++] = hexDigits[byte0 & 0xf]; } return new String(buf); } catch (Exception e) { return null; } }
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6.MD5加密工具类:
package com.huihui.util; import java.security.MessageDigest; /** * MD5加密工具类 * @author Administrator * */public class Md5Util { public final static String MD5(String s){ char hexDigits[] = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'}; try { byte[] strTemp = s.getBytes(); MessageDigest mdTemp = MessageDigest.getInstance(MD5); mdTemp.update(strTemp); byte[] md = mdTemp.digest(); int j = md.length; char str[] = new char[j*2]; int k = 0; for (int i = 0; i < j; i++) { byte byte0 = md[i]; str[k++] = hexDigits[byte0>>>4&0xf]; str[k++] = hexDigits[byte0 & 0xf]; } return new String(str); } catch (Exception e) { return null; } } public static void main(String[] args) { System.out.println(Md5Util.MD5(b)); } }
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