Protection of a portable object against denial of service type attacks.

摘要

A portable object comprises a memory where at least one credential is stored. The credential is associated with a service and used to verify that the entity requesting a service is an authorized entity for accessing the service. The method for protecting a portable object against denial of service type attacks comprises the steps of :- verifying that the entity requesting a service is an authorized entity for accessing the service, based on an algorithm involving the credential,- delivering the requested service only when the verification step succeeded,- blocking the credential associated with the service after a certain number of verification step failed.When the verification step failed, the method further comprises the steps of waiting during a duration before allowing a new verification step.