MD5 is an encryption algorithm and is be used in many applications. It also have some types, for example, 16-bit,32-bit or 128-bit, In java, if you want to use 32-bit md5 to encrypt string, you can do like this:
Step 1: Create a 32-bit MD5 class in java
In java, a sample source code of 32-bit MD5 class is :
import java.security.MessageDigest; public class MD5 { public static String encryptStr(String s){ char hexChars[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'}; try { byte[] bytes = s.getBytes(); MessageDigest md = MessageDigest.getInstance("MD5"); md.update(bytes); bytes = md.digest(); int j = bytes.length; char[] chars = new char[j * 2]; int k = 0; for (int i = 0; i < bytes.length; i++) { byte b = bytes[i]; chars[k++] = hexChars[b >>> 4 & 0xf]; chars[k++] = hexChars[b & 0xf]; } return new String(chars); } catch (Exception e) { return null; } } }Google+
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