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diff --git a/rtemsbsd/telnetd/check_passwd.c b/rtemsbsd/telnetd/check_passwd.c
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+/*
+ * Authorship
+ * ----------
+ * This software was created by
+ *     Till Straumann <strauman@slac.stanford.edu>, 2003-2007
+ * 	   Stanford Linear Accelerator Center, Stanford University.
+ *
+ * Acknowledgement of sponsorship
+ * ------------------------------
+ * This software was produced by
+ *     the Stanford Linear Accelerator Center, Stanford University,
+ * 	   under Contract DE-AC03-76SFO0515 with the Department of Energy.
+ *
+ * Government disclaimer of liability
+ * ----------------------------------
+ * Neither the United States nor the United States Department of Energy,
+ * nor any of their employees, makes any warranty, express or implied, or
+ * assumes any legal liability or responsibility for the accuracy,
+ * completeness, or usefulness of any data, apparatus, product, or process
+ * disclosed, or represents that its use would not infringe privately owned
+ * rights.
+ *
+ * Stanford disclaimer of liability
+ * --------------------------------
+ * Stanford University makes no representations or warranties, express or
+ * implied, nor assumes any liability for the use of this software.
+ *
+ * Stanford disclaimer of copyright
+ * --------------------------------
+ * Stanford University, owner of the copyright, hereby disclaims its
+ * copyright and all other rights in this software.  Hence, anyone may
+ * freely use it for any purpose without restriction.
+ *
+ * Maintenance of notices
+ * ----------------------
+ * In the interest of clarity regarding the origin and status of this
+ * SLAC software, this and all the preceding Stanford University notices
+ * are to remain affixed to any copy or derivative of this software made
+ * or distributed by the recipient and are to be affixed to any copy of
+ * software made or distributed by the recipient that contains a copy or
+ * derivative of this software.
+ *
+ * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03
+ *
+ * Copyright (c) 2009 embedded brains GmbH and others.
+ *
+ * embedded brains GmbH
+ * Obere Lagerstr. 30
+ * D-82178 Puchheim
+ * Germany
+ * <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <termios.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+
+#include <rtems/telnetd.h>
+
+#include "des.h"
+#include <rtems/passwd.h>
+
+/**
+ * @brief Standard Telnet login check that uses DES to encrypt the passphrase.
+ *
+ * Takes a @a passphrase, encrypts it and compares it to the encrypted
+ * passphrase in the @c TELNETD_PASSWD environment variable.  No password is
+ * required if @c TELNETD_PASSWD is unset.  The argument @a user is ignored.
+ */
+bool rtems_telnetd_login_check(
+  const char *user,
+  const char *passphrase
+)
+{
+  char *pw = getenv( "TELNETD_PASSWD");
+  char cryptbuf [21];
+  char salt [3];
+
+  if (pw == NULL || strlen( pw) == 0) {
+    #ifdef TELNETD_DEFAULT_PASSWD
+      pw = TELNETD_DEFAULT_PASSWD;
+    #else
+      return true;
+    #endif
+  }
+
+  strncpy( salt, pw, 2);
+  salt [2] = '\0';
+
+  return strcmp(
+    __des_crypt_r( passphrase, salt, cryptbuf, sizeof( cryptbuf)),
+    pw
+  ) == 0;
+}