Page 105 - slides.dvi
P. 105

•
              •
                                                                                                •
                     •
                                                                                  •
                                   •
                                                        •
                                                                    •
                                                                                                      E.g.
                            id
   Operating
                                          Really
                                                        salt
                                                               byte
              smart
                                                                                                simple
                            card
                                                                                  sensible
   Systems
                                                                    password
                                   enhanced
                                                                                                for
   —
                                                               string
                                          require
                     fingerprint,
                                                                    is
              cards
                                                                                                      passwords
                                                        followed
                                                                                  user
                                                                                         arachnid
                                                                           !r!chn#d
                                                                                                      in
                                                                                                user
                            inserted
                                                        by
   Protection
                                                                                                               Authentication
                                                                                                to
                                                 IML.DVMcz6Sh2
                                   password:
                            into
                                                                                  applies
                                                                                                               of
                                                        these
                                                                                                      UNIX:
                     voiceprint,
                                          unforgeable
                                                                                  an
                            slot
                                                        11
                     face
                                                                    DES-encrypted
                                                                                                               User
                                                                                                remember
                                                                    25
                                                        bytes
                                                                                                               to
                                          evidence
                                                                                  algorithm
                                                        are
                                          of
                                                                    times
                     recognition
                                                        then
                                   challenge-response.
                                                                                                               System
                                                                    using
                                          identity
                                                                    a
                                                        stored
                                                                                                               (2)
                                          that
                                                                    2-byte
                                          system
                                          can
                                                                    per-user
                                                                    ‘salt’
                                          check:
                                                                    to



                                                                    produce
                                                                    a


                                                                    11
   101
   100   101   102   103   104   105   106   107   108   109   110