Try the new CSRC.nist.gov and let us know what you think!
(Note: Beta site content may not be complete.)
Fulltext search of NIST's computer security publications:
NIST has also written a significant number of computer security-related journal articles, conference papers, books, book chapters, white papers, and other documents. They are available by year of publication on the following pages:
More papers from earlier years will be added in the future.