nwztools/upgtools: add more brute force algorithms

Allow to search for hex with upper case and alphanumeric. This is *much* slower
of course.

Change-Id: I41a2fc63c4b2220c21147b711098ebc37ddb3527

1 files changed, 3 insertions, 1 deletions

diff --git a/utils/nwztools/upgtools/keysig_search.h b/utils/nwztools/upgtools/keysig_search.h
index f419e2621c..877da2f89c 100644
--- a/utils/nwztools/upgtools/keysig_search.h
+++ b/utils/nwztools/upgtools/keysig_search.h
@@ -30,7 +30,9 @@ enum keysig_search_method_t
 {
     KEYSIG_SEARCH_NONE = 0,
     KEYSIG_SEARCH_FIRST,
-    KEYSIG_SEARCH_ASCII_HEX = KEYSIG_SEARCH_FIRST,
+    KEYSIG_SEARCH_XDIGITS = KEYSIG_SEARCH_FIRST,
+    KEYSIG_SEARCH_XDIGITS_UP,
+    KEYSIG_SEARCH_ALNUM,
     KEYSIG_SEARCH_LAST
 };