From 703d95fcf84d720567cefe1483695d76f32ebb34 Mon Sep 17 00:00:00 2001
From: Daniel Gultsch <daniel@gultsch.de>
Date: Sun, 27 Dec 2015 18:37:12 +0100
Subject: [PATCH] lower case all fingerprints. fixes #1521

---
 src/main/java/eu/siacs/conversations/utils/CryptoHelper.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/eu/siacs/conversations/utils/CryptoHelper.java b/src/main/java/eu/siacs/conversations/utils/CryptoHelper.java
index 5c504e040..1ef5fb3f6 100644
--- a/src/main/java/eu/siacs/conversations/utils/CryptoHelper.java
+++ b/src/main/java/eu/siacs/conversations/utils/CryptoHelper.java
@@ -19,6 +19,7 @@ import java.util.Collection;
 import java.util.Iterator;
 import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Locale;
 
 import eu.siacs.conversations.Config;
 import eu.siacs.conversations.R;
@@ -94,7 +95,7 @@ public final class CryptoHelper {
 		} else if (fingerprint.length() < 40) {
 			return fingerprint;
 		}
-		StringBuilder builder = new StringBuilder(fingerprint.replaceAll("\\s",""));
+		StringBuilder builder = new StringBuilder(fingerprint.toLowerCase(Locale.US).replaceAll("\\s", ""));
 		for(int i=8;i<builder.length();i+=9) {
 			builder.insert(i, ' ');
 		}