OpenID is easy, quick and (in some cases) secure way to represent yourself in the Internet. The user can enter many websites with only one identifier. Also the user can see the data, required by the website and may decide whether to submit them or no.

This way the user knows, at any given moment, who is using his/her data and for what purpose, because the user has allowed that. From another point of view, when the user associates the OpenID, anyone will know that he/she is that particular user without confusion of names, nicknames and user identities in different applications.

The lecture will show and demonstrate, the OpenID protocol, how it works with examples, the ways to exchange public keys and how to use digital signature withecliptic curves to increase security and for actual identification through that protocol, using the SIM-card of your mobile telephone.