It should rarely be necessary to use this function, and if it is, it should be carefully planned. Planning the migration of a secret key involves choice of transport media and secure deletion of the key data on the old machine, as well as the transport medium, among other things.
Esta función só a hai que utilizar raras veces e cando se faga haino que planear con coidado. Planear a migración dunha chave secreta implica que hai que escoller o medio de transporte e eliminar de maneira segura os datos da chave da máquina antiga, entre outras cousas.