Do readers do any cryptography operation?

[ordane]

Does the smart card reader do the cryptography operation? AFAIK, smart card use a Mutual-Authentication method to authenticates the off-card entity. But where is the cryptography operation done, in the reader or not?
In a word, I just want to know whether the reader does any cryptography operation.

[UNKNwYSHSA]

The cryptography operations offcard was implemented by the client application on PC.