Java Utililty Methods Digest

try {
    MessageDigest md = MessageDigest.getInstance("MD5");
    md.update(getBytes(ha1, ISO_8859_1));
    md.update((byte) ':');
    md.update(getBytes(nonce, ISO_8859_1));
    md.update((byte) ':');
    md.update(getBytes(ha2, ISO_8859_1));
    return toHexString(md.digest());
...

return digest(input.getBytes(charset));

MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
return messageDigest.digest(input.getBytes(encoding));

byte[] bs = md5digest(key);
return byte2hex(bs);

try {
    byte[] msg = message.getBytes("UTF-8");
    md.update(salt);
    md.update(msg);
} catch (Exception ex) {
return md.digest();

if (source != null) {
    final MessageDigest md = MessageDigest.getInstance(name);
    md.update(source.getBytes());
    return toHexString(md.digest());
return null;

try {
    byte[] strTemp = orgin.getBytes("utf-8");
    MessageDigest mdTemp = MessageDigest.getInstance(algorithm);
    mdTemp.update(strTemp);
    byte[] md = mdTemp.digest();
    return bytes2hex(md);
} catch (Exception e) {
    return null;
...

MessageDigest md = MessageDigest.getInstance("MD5");
md.update(password.getBytes());
byte byteData[] = md.digest();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < byteData.length; i++) {
    sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));
return sb.toString();
...

MessageDigest messageDigest;
messageDigest = MessageDigest.getInstance(algorithm);
byte[] bytes = toByteArray(plain);
byte[] digestedBytes = messageDigest.digest(bytes);
String hex = toHexString(digestedBytes);
return hex;

MessageDigest digest = createMessageDigest();
byte[] b = planeText.getBytes();
String hex = toHexString(digest.digest(b));
return hex;