--- src/modules/rlm_mschap/rlm_mschap.c.orig	Thu Aug 19 10:20:28 2004
+++ src/modules/rlm_mschap/rlm_mschap.c	Thu Aug 19 10:21:16 2004
@@ -220,10 +220,15 @@
 	SHA1_CTX Context;
 	char hash[20];
 
+	const char *name;
+
+	name = strchr(user_name, '\\');
+	name = name == NULL ? user_name : name + 1;
+
 	SHA1Init(&Context);
 	SHA1Update(&Context, peer_challenge, 16);
 	SHA1Update(&Context, auth_challenge, 16);
-	SHA1Update(&Context, user_name, strlen(user_name));
+	SHA1Update(&Context, name, strlen(name));
 	SHA1Final(hash, &Context);
 	memcpy(challenge, hash, 8);
 }