Hi, in XrdCrypto there is a typo and a missing library dependency in Makefile.am I have it working with this: libXrdCryptoLite_la_SOURCES = \ XrdCryptoLite.hh \ XrdCryptoLite.cc \ XrdCryptoLite_bf32.cc libXrdCryptoLite_la_CXXFLAGS = $(SSLCXXFLAGS) libXrdCryptoLite_la_LIBADD = $(OPENSSL_LIBDIR) -lcrypto ... otherwise SSS authentication cannot be loaded at runtime (it compiles even with the typo!). Cheers Andreas.