/** Default constructor. */
public DigestServerAuthenticationMethod() {
try {
messageDigest = MessageDigest.getInstance(DEFAULT_ALGORITHM);
} catch (NoSuchAlgorithmException ex) {
ProxyDebug.println("Algorithm not found " + ex);
ex.printStackTrace();
}
passwordTable = new Hashtable();
}
/**
* Returns an MD5 hash.
*
* @param pw String
* @return String
*/
private static String md5(final String pw) {
final StringBuilder sb = new StringBuilder();
try {
final MessageDigest md = MessageDigest.getInstance("MD5");
md.update(pw.getBytes());
for (final byte b : md.digest()) {
final String s = Integer.toHexString(b & 0xFF);
if (s.length() == 1) sb.append('0');
sb.append(s);
}
} catch (final NoSuchAlgorithmException ex) {
// should not occur
ex.printStackTrace();
}
return sb.toString();
}