+ int keyLength; // length of key, in bytes
+ int encVersion; // encryption algorithm
+
+ Guint getStartXref();
+ GBool readXRef(Guint *pos);
+ GBool readXRefTable(Parser *parser, Guint *pos);
+ GBool readXRefStreamSection(Stream *xrefStr, int *w, int first, int n);
+ GBool readXRefStream(Stream *xrefStr, Guint *pos);