<?xml version="1.0" encoding="UTF-8"?>
<!ELEMENT repository (name*, contact*, description*, key*, metadata)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT contact (#PCDATA)>
<!ELEMENT description (#PCDATA)>
<!ELEMENT key (#PCDATA)>
<!ATTLIST key type CDATA #REQUIRED>
<!ELEMENT metadata (data+)>
<!ELEMENT data (#PCDATA)>
<!ATTLIST data type CDATA #REQUIRED
               timestamp CDATA #REQUIRED
               href CDATA #REQUIRED
               xml:base CDATA #IMPLIED>