Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
lasso-devel
lasso-devel(x86-32)
pkgconfig(lasso)

Requires :

rpmlib(FileDigests) <= 4.6.0-1
rpmlib(CompressedFileNames) <= 3.0.4-1
pkgconfig(libxml-2.0)
pkgconfig(glib-2.0)
pkgconfig(xmlsec1)
/usr/bin/pkg-config
pkgconfig(libxslt)
rpmlib(PayloadIsXz) <= 5.2-1
pkgconfig(gobject-2.0)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
lasso(x86-32) = 2.5.1-8.el7_9
liblasso.so.3

Content of RPM :
/usr/include/lasso
/usr/include/lasso/backward_comp.h
/usr/include/lasso/ctypes.h
/usr/include/lasso/debug.h
/usr/include/lasso/errors.h
/usr/include/lasso/export.h
/usr/include/lasso/id-ff
/usr/include/lasso/id-ff/defederation.h
/usr/include/lasso/id-ff/federation.h
/usr/include/lasso/id-ff/identity.h
/usr/include/lasso/id-ff/lecp.h
/usr/include/lasso/id-ff/login.h
/usr/include/lasso/id-ff/logout.h
/usr/include/lasso/id-ff/name_identifier_mapping.h
/usr/include/lasso/id-ff/name_registration.h
/usr/include/lasso/id-ff/profile.h
/usr/include/lasso/id-ff/provider.h
/usr/include/lasso/id-ff/server.h
/usr/include/lasso/id-ff/session.h
/usr/include/lasso/key.h
/usr/include/lasso/keyprivate.h
/usr/include/lasso/lasso.h
/usr/include/lasso/lasso_config.h
/usr/include/lasso/logging.h
/usr/include/lasso/registry-private.h
/usr/include/lasso/registry.h
/usr/include/lasso/saml-2.0
/usr/include/lasso/saml-2.0/assertion_query.h
/usr/include/lasso/saml-2.0/ecp.h
/usr/include/lasso/saml-2.0/name_id_management.h
There is 132 files more in these RPM.