diff --git a/ipppd/Makefile.in b/ipppd/Makefile.in
index 08d2e46c..b265a380 100644
--- a/ipppd/Makefile.in
+++ b/ipppd/Makefile.in
@@ -3,6 +3,7 @@
 # $Id$
 #
 
+HAVE_LIBSSL   := @HAVE_LIBSSL@
 HAVE_LIBDES   := @HAVE_LIBDES@
 HAVE_LIBCRYPT := @HAVE_LIBCRYPT@
 HAVE_SHADOW_H := @HAVE_SHADOW_H@
@@ -89,14 +90,22 @@ SOURCE = RELNOTES configure *.in $(PPPDSRCS) $(HEADERS) $(MANPAGES)
 
 MSG    = ''
 ifdef USE_MSCHAP
-	ifeq ($(HAVE_LIBDES),1)
+	ifeq ($(HAVE_LIBSSL),1)
 		PPPDSRCS += md4.c chap_ms.c
 		PPPDOBJS += md4.o chap_ms.o
 		HEADERS  += md4.h chap_ms.h
-		COPTS    += -DUSE_MSCHAP
-		LIBS     += -ldes
+		COPTS    += -DUSE_MSCHAP -DUSE_SSLDES
+		LIBS     += -lssl
 	else
-		MSG = '\n\nLibrary libdes not found, USE_MSCHAP disabled\n\n'
+		ifeq ($(HAVE_LIBDES),1)
+			PPPDSRCS += md4.c chap_ms.c
+			PPPDOBJS += md4.o chap_ms.o
+			HEADERS  += md4.h chap_ms.h
+			COPTS    += -DUSE_MSCHAP
+			LIBS     += -ldes
+		else
+			MSG = '\n\nLibrary libdes not found, USE_MSCHAP disabled\n\n'
+		endif
 	endif
 endif
 
diff --git a/ipppd/chap_ms.c b/ipppd/chap_ms.c
index e74709f7..398c12a8 100644
--- a/ipppd/chap_ms.c
+++ b/ipppd/chap_ms.c
@@ -34,7 +34,11 @@ char chap_ms_rcsid[] = "$Id$";
 #include "chap_ms.h"
 #include "md4.h"
 
+#ifdef USE_SSLDES
+#include <ssl/des.h>
+#else
 #include <des.h>
+#endif
 
 typedef struct {
     u_char LANManResp[24];
diff --git a/ipppd/config.h.in b/ipppd/config.h.in
index d9a5a2b3..da40aa30 100644
--- a/ipppd/config.h.in
+++ b/ipppd/config.h.in
@@ -95,4 +95,7 @@
 /* Define if you have the des library (-ldes).  */
 #undef HAVE_LIBDES
 
+/* Define if you have the ssl library (-lssl).  */
+#undef HAVE_LIBSSL
+
 #endif
diff --git a/ipppd/configure.in b/ipppd/configure.in
index eadb9593..3b41e9bc 100644
--- a/ipppd/configure.in
+++ b/ipppd/configure.in
@@ -22,6 +22,7 @@ AC_CHECK_LIB(bsd, daemon,HAVE_LIBBSD=1; AC_DEFINE(HAVE_LIBBSD),
 dnl Replace `main' with a function in -lcrypt:
 AC_CHECK_LIB(crypt, main,HAVE_LIBCRYPT=1; AC_DEFINE(HAVE_LIBCRYPT))
 AC_CHECK_LIB(des, des_ecb_encrypt, HAVE_LIBDES=1; AC_DEFINE(HAVE_LIBDES))
+AC_CHECK_LIB(ssl, DES_ecb_encrypt, HAVE_LIBSSL=1; AC_DEFINE(HAVE_LIBSSL))
 
 dnl Checks for header files.
 AC_HEADER_STDC
@@ -111,6 +112,7 @@ AC_ARG_ENABLE(ippp-filter,
 AC_SUBST(I4LVERSION)
 AC_SUBST(MANDATE)
 AC_SUBST(HAVE_LIBDES)
+AC_SUBST(HAVE_LIBSSL)
 AC_SUBST(HAVE_LIBCRYPT)
 AC_SUBST(HAVE_LIBBSD)
 AC_SUBST(HAVE_SHADOW_H)