diff --git a/auth-chall.c b/auth-chall.c
index b6ec02a..926c07e 100644
--- a/auth-chall.c
+++ b/auth-chall.c
@@ -26,7 +26,48 @@
 RCSID("$OpenBSD: auth-chall.c,v 1.4 2001/02/04 15:32:22 stevesk Exp $");
 
 #include "auth.h"
+#include "log.h"
 
+#ifdef BSD_AUTH
+char *
+get_challenge(Authctxt *authctxt, char *devs)
+{
+	char *challenge;
+
+	if (authctxt->as != NULL) {
+		debug2("try reuse session");
+		challenge = auth_getitem(authctxt->as, AUTHV_CHALLENGE);
+		if (challenge != NULL) {
+			debug2("reuse bsd auth session");
+			return challenge;
+		}
+		auth_close(authctxt->as);
+		authctxt->as = NULL;
+	}
+	debug2("new bsd auth session");
+	if (devs == NULL || strlen(devs) == 0)
+		devs = authctxt->style;
+	debug3("bsd auth: devs %s", devs ? devs : "<default>");
+	authctxt->as = auth_userchallenge(authctxt->user, devs, "auth-ssh",
+	    &challenge);
+        if (authctxt->as == NULL)
+                return NULL;
+	debug2("get_challenge: <%s>", challenge ? challenge : "EMPTY");
+	return challenge;
+}
+int
+verify_response(Authctxt *authctxt, char *response)
+{
+	int authok;
+
+	if (authctxt->as == 0)
+		error("verify_response: no bsd auth session");
+	authok = auth_userresponse(authctxt->as, response, 0);
+	authctxt->as = NULL;
+	debug("verify_response: <%s> = <%d>", response, authok);
+	return authok != 0;
+}
+#else
 #ifdef SKEY
 #include <skey.h>
 
@@ -60,3 +101,4 @@
 	return 0;
 }
 #endif
+#endif