The present invention is directed to a method for indicating the integrity of a collection of digital objects, such as a software package, an email with attachments, etc.) The method comprising the steps of:Sealing the collection of digital objects by gathering the hash values of the digital objects into a binding file and digitally signing the binding file (the binding file may further comprise information about the relations between the objects); andIndicating the integrity of a sealed collection of digital objects by validating the integrity of its binding file via its digital signature; and validating the integrity of each object by the correspondence of its hash value with the corresponding hash value stored within the validated binding file.