Auth Srv
App Srv
CorSSO Protocol
SN
0
1
Client generates key
pair (KU, kU),
identifies self
separately to each
authentication server
Acquires a partially
signed token
Combines partially
signed tokens into a
single token signed
by
1 says:
kU1 speaks
for U”
Policy P
0 says:
kU0 speaks
for U”
U
Principal