The invention is in the field of security and trustworthy computing. The invention relates to a method for managing identities in a device comprising a trusted platform module. In the method an identity related command is used for performing identity related action; a delegation agent, a storage key for secure storage, and a delegation for the identity related command are created. Further, said delegation is sealed using the created storage key to a trustworthy system state; and the sealed delegation is delivered to the delegation agent.