Hi All, I am new to xmlsec library. I have installed library successfully. But when I tried to run sample example sign1.c I gor the following error. ./sign1 sign1-tmpl.xml rsakey.pem func=xmlSecCryptoAppInit:file=app.c:line=1055:obj=unknown:subj=cryptoAppInit:error=9:feature is not implemented: Error: crypto initialization failed. Thanks. Regards, Umesh