There is a sample peoplecode delivered in App engine program used by Search engine indexing. It is PTSF_GENFEED -> Setup -> Step04 – PeopleCode
Local JavaObject &header = CreateJavaObject("java.lang.String", &esuser | ":" | Decrypt("", &espass));
Local JavaObject &oEncoder = CreateJavaObject("com.peoplesoft.tools.util.Base64");
&auth = &oEncoder.encode(&header.getBytes());
&auth = "Authorization: Basic " | &auth;
You can also find references of delivered peoplecode using base64 using below SQL
select * from pspcmtxt where upper(PCTEXT) like '%BASE64%';
