The Proposed Visual Authentication Scheme through Internet (Model and Description for Dynamic Password Visual Authentication)
Internet
WWW
Server
login ID
a random image
correct password
send a random image each time when user login
a key image stored in disk
RESPONSE
CHALLENGE
+
=
1 2 3 4 5
DYNAMIC PASSWORD :
the password is different each time
1st 1 2 3 4 5
2nd 2 4 4 7 5
3rd 5 8 0 5 8
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