標準MD5加密算法:
public class Md5 {public static String getMd5(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;}}/*** 標準MD5加密* * @param inStr* @return* @throws Exception*/public static String toMD5(String inStr) {StringBuffer sb = new StringBuffer();try {MessageDigest md = MessageDigest.getInstance("MD5");md.update(inStr.getBytes());byte b[] = md.digest();int i;for (int offset = 0; offset < b.length; offset++) {i = b[offset];if (i < 0)i += 256;if (i < 16)sb.append("0");sb.append(Integer.toHexString(i));}} catch (Exception e) {return null;// e.printStackTrace(); }return sb.toString().toUpperCase();}public static void main(String[] args) throws Exception {System.out.println(toMD5("MATICSOFT").toUpperCase());System.out.println(getMd5("MATICSOFT").toUpperCase());} }
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