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-rw-r--r--interface-definitions/system-login.xml.in3
1 files changed, 3 insertions, 0 deletions
diff --git a/interface-definitions/system-login.xml.in b/interface-definitions/system-login.xml.in
index 4bfe82268..f4613b8a2 100644
--- a/interface-definitions/system-login.xml.in
+++ b/interface-definitions/system-login.xml.in
@@ -44,6 +44,9 @@
<tagNode name="public-keys">
<properties>
<help>Remote access public keys</help>
+ <constraint>
+ <regex>^[-_a-zA-Z0-9@]+$</regex>
+ </constraint>
<valueHelp>
<format>txt</format>
<description>Key identifier used by ssh-keygen (usually of form user@host)</description>