diff --git a/share/pgpkeys/clsung.key b/share/pgpkeys/clsung.key
new file mode 100644
index 0000000000..ab666f640a
--- /dev/null
+++ b/share/pgpkeys/clsung.key
@@ -0,0 +1,74 @@
+<!-- $FreeBSD$ -->
+<!--
+sh ./addkey.sh clsung 956E8BC1;
+-->
+<programlisting role="pgpfingerprint"><![CDATA[
+pub  1024D/956E8BC1 2003-09-12 Cheng-Lung Sung <clsung@FreeBSD.org>
+     Key fingerprint = E0BC 57F9 F44B 46C6 DB53  8462 F807 89F3 956E 8BC1
+uid                            Cheng-Lung Sung (Software Engineer) <clsung@dragon2.net>
+uid                            Cheng-Lung Sung (Alumnus of CSIE, NCTU, Taiwan) <clsung@sungsung.csie.nctu.edu.tw>
+uid                            Cheng-Lung Sung (AlanSung) <clsung@tiger2.net>
+uid                            Cheng-Lung Sung (FreeBSD@Taiwan) <clsung@freebsd.csie.nctu.edu.tw>
+uid                            Cheng-Lung Sung (Ph.D. Student of NTU.EECS) <d92921016@ntu.edu.tw>
+uid                            Cheng-Lung Sung (FreeBSD Freshman) <clsung@tw.freebsd.org>
+uid                            Cheng-Lung Sung (ports committer) <clsung@FreeBSD.org>
+sub  1024g/1FB800C2 2003-09-12
+]]></programlisting>
+<programlisting role="pgpkey"><![CDATA[
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+mQGiBD9iAJ0RBACJHmAyofYftDx6hFkYRkCrM999YrKxfYGybHI+MoN2fFPXMvSh
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++AeJ85Vui8E94gCdEqq8xPwuUc/LJQyc1ziacZJ/FmQAnA41/zThbZg2nf994Wre
+OT332jJ8
+=EtCd
+-----END PGP PUBLIC KEY BLOCK-----
+]]></programlisting>
diff --git a/share/pgpkeys/pgpkeys.ent b/share/pgpkeys/pgpkeys.ent
index 1df23ee67f..4f8473990b 100644
--- a/share/pgpkeys/pgpkeys.ent
+++ b/share/pgpkeys/pgpkeys.ent
@@ -25,6 +25,7 @@
 <!ENTITY pgpkey.cjh SYSTEM "cjh.key">
 <!ENTITY pgpkey.clement SYSTEM "clement.key">
 <!ENTITY pgpkey.clive SYSTEM "clive.key">
+<!ENTITY pgpkey.clsung SYSTEM "clsung.key">
 <!ENTITY pgpkey.core-secretary SYSTEM "core-secretary.key">
 <!ENTITY pgpkey.cshumway SYSTEM "cshumway.key">
 <!ENTITY pgpkey.daichi SYSTEM "daichi.key">