To create a Qualified Electronic Signature the user must have a qualified signature certificate issued by a qualified Certification Authority. The signature certificate allows to sign legally any electronic document.
A legal entity, to create a qualified Electronic Seal must have a qualified seal certificate issued by a qualified Certification Authority. The qualified electronic seal is used to guarantee the origin and integrity of an electronic document.
The time-stamping is a service that allows to guarantee- using time stamps – legally valid date and time of existence of an electronic document.