diff --git a/lib/krb5/krb5_locl.h b/lib/krb5/krb5_locl.h
index 3ffcf3368..fbf4fbd2c 100644
--- a/lib/krb5/krb5_locl.h
+++ b/lib/krb5/krb5_locl.h
@@ -24,6 +24,9 @@
 #include <sys/time.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#ifdef HAVE_NETINET_IN6_H
+#include <netinet/in6.h>
+#endif
 #include <netdb.h>
 #ifdef HAVE_SYS_FILIO_H
 #include <sys/filio.h>
@@ -94,4 +97,14 @@ extract_ticket(krb5_context context,
 	       krb5_decrypt_proc decrypt_proc,
 	       krb5_const_pointer decryptarg);
 
+void krb5_NULL_checksum(void *p, size_t len, void *result);
+
+void krb5_MD4_checksum(void *p, size_t len, void *result);
+
+void krb5_MD5_checksum(void *p, size_t len, void *result);
+
+void krb5_SHA1_checksum(void *p, size_t len, void *result);
+
+void krb5_CRC_checksum(void *p, size_t len, void *result);
+
 #endif /* __KRB5_LOCL_H__ */