From 3f60622e54c2faf8d83f84efc36c1113c6678db6 Mon Sep 17 00:00:00 2001
From: Tollef Fog Heen <tfheen@err.no>
Date: Fri, 31 Dec 2010 09:18:28 +0100
Subject: [PATCH] Document modhex

---
 ykpersonalize.1 | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/ykpersonalize.1 b/ykpersonalize.1
index bf8b69e..2090279 100644
--- a/ykpersonalize.1
+++ b/ykpersonalize.1
@@ -247,6 +247,20 @@ configuration, and the other in challenge-response mode).  Instead, a program ca
 sending USB HID feature reports to the token must be used to send it a challenge, and
 read the response.
 
+.SH Modhex
+Modhex is a way of writing hex digits where the \(lqdigits\(rq are
+chosen for being in the same place on most keyboard layouts.
+.TP
+To convert from hex to modhex, you can use
+.RS
+tr "[0123456789abcdef]" "[cbdefghijklnrtuv]"
+.RE
+.TP
+To convert the other way, use
+.RS
+tr "[cbdefghijklnrtuv]" "[0123456789abcdef]"
+.RE
+
 .SH BUGS
 Report ykpersonalize bugs in 
 .URL "https://github.com/Yubico/yubikey-personalization/issues" "the issue tracker"
-- 
2.39.5