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- package cn.efunbox.manage.base.util;
- import java.security.MessageDigest;
- public class MD5Util {
- private static String byteArrayToHexString(byte b[]) {
- StringBuffer resultSb = new StringBuffer();
- for (int i = 0; i < b.length; i++)
- resultSb.append(byteToHexString(b[i]));
- return resultSb.toString();
- }
- private static String byteToHexString(byte b) {
- int n = b;
- if (n < 0)
- n += 256;
- int d1 = n / 16;
- int d2 = n % 16;
- return hexDigits[d1] + hexDigits[d2];
- }
- public static String MD5Encode(String origin, String charsetname) {
- String resultString = null;
- try {
- resultString = new String(origin);
- MessageDigest md = MessageDigest.getInstance("MD5");
- if (charsetname == null || "".equals(charsetname))
- resultString = byteArrayToHexString(md.digest(resultString
- .getBytes()));
- else
- resultString = byteArrayToHexString(md.digest(resultString
- .getBytes(charsetname)));
- } catch (Exception exception) {
- }
- return resultString;
- }
- private static final String hexDigits[] = {"0", "1", "2", "3", "4", "5",
- "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"};
- }
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