diff -urN hylafax-5.5.4/hfaxd/Login.c++ hylafax-5.5.4-libc217/hfaxd/Login.c++
--- hylafax-5.5.4/hfaxd/Login.c++	2013-08-07 01:23:35.000000000 +0200
+++ hylafax-5.5.4-libc217/hfaxd/Login.c++	2013-11-13 12:56:02.000000000 +0100
@@ -30,9 +30,6 @@
 #include <ctype.h>
 #include <fcntl.h>
 #include <pwd.h>
-#if HAS_CRYPT_H
-#include <crypt.h>
-#endif
 
 void
 HylaFAXServer::loginRefused(const char* why)
@@ -434,7 +431,7 @@
     /*
      * Check hosts.hfaxd first, then PAM, and last, LDAP
      */
-    if (pass[0] == '\0' || !(strcmp(crypt(pass, passWd), passWd) == 0 || 
+    if (pass[0] == '\0' || !(strcmp(Sys::crypt(pass, passWd), passWd) == 0 || 
 			     pamCheck(the_user, pass) || 
 			     ldapCheck(the_user,pass)))
     {
@@ -513,7 +510,7 @@
 {
     fxAssert(IS(LOGGEDIN), "ADMIN command permitted when not logged in");
     // NB: null adminWd is permitted
-    if ((strcmp(crypt(pass, adminWd), adminWd) != 0) && !pamIsAdmin()) {
+    if ((strcmp(Sys::crypt(pass, adminWd), adminWd) != 0) && !pamIsAdmin()) {
 	if (++adminAttempts >= maxAdminAttempts) {
 	    reply(530, "Password incorrect (closing connection).");
 	    logNotice("Repeated admin failures from %s [%s]"
diff -urN hylafax-5.5.4/hfaxd/SNPPServer.c++ hylafax-5.5.4-libc217/hfaxd/SNPPServer.c++
--- hylafax-5.5.4/hfaxd/SNPPServer.c++	2013-08-07 01:23:35.000000000 +0200
+++ hylafax-5.5.4-libc217/hfaxd/SNPPServer.c++	2013-11-13 12:55:42.000000000 +0100
@@ -36,9 +36,6 @@
 #include "RE.h"
 
 #include <ctype.h>
-#if HAS_CRYPT_H
-#include <crypt.h>
-#endif
 
 extern "C" {
 #include <netdb.h>
@@ -1003,7 +1000,7 @@
 
     if (checkUser(loginID)) {
 	if (passWd != "") {
-	    if (pass[0] == '\0' || !(streq(crypt(pass, passWd), passWd) || pamCheck(the_user, pass))) {
+	    if (pass[0] == '\0' || !(streq(Sys::crypt(pass, passWd), passWd) || pamCheck(the_user, pass))) {
 		if (++loginAttempts >= maxLoginAttempts) {
 		    reply(421, "Login incorrect (closing connection).");
 		    logNotice("Repeated SNPP login failures for user %s from %s [%s]"
diff -urN hylafax-5.5.4/hfaxd/User.c++ hylafax-5.5.4-libc217/hfaxd/User.c++
--- hylafax-5.5.4/hfaxd/User.c++	2013-08-07 01:23:35.000000000 +0200
+++ hylafax-5.5.4-libc217/hfaxd/User.c++	2013-11-13 12:55:19.000000000 +0100
@@ -30,9 +30,6 @@
 
 #include <ctype.h>
 #include <pwd.h>
-#if HAS_CRYPT_H
-#include <crypt.h>
-#endif
 #include <math.h>
 
 #ifndef CHAR_BIT
@@ -374,7 +371,7 @@
 #else
     to64(&salt[0], random(), 2);
 #endif
-    result = crypt(pass, salt);
+    result = Sys::crypt(pass, salt);
     return (true);
 }
 
diff -urN hylafax-5.5.4/util/Sys.h hylafax-5.5.4-libc217/util/Sys.h
--- hylafax-5.5.4/util/Sys.h	2013-08-07 01:23:35.000000000 +0200
+++ hylafax-5.5.4-libc217/util/Sys.h	2013-11-13 12:56:26.000000000 +0100
@@ -44,6 +44,10 @@
 #include <osfcn.h>
 #endif
 
+#if HAS_CRYPT_H
+#include <crypt.h>
+#endif
+
 /*
  * Wrapper functions for C library calls.
  *
@@ -140,5 +144,8 @@
 	{ return ::fopen(filename, mode); }
 
     static int getOpenMax();
+
+    static const char* crypt(const char* key, const char* salt)
+	{ const char* enc = ::crypt(key, salt); return enc ? enc : ""; }
 };
 #endif /* _Sys_ */