Abstract: A method is provided for controlling exchange of privacy sensitive data between a first certified party server (A) associated with a first party and at least a second certified party server (B) associated with a second party using a certified intermediate server (Y) subject to authorizations (XAB) imposed by an authorizing party (X), using a public network. Therein the first certified party server (A) transmits (S2) to the certified intermediate server (Y) a primary request (ARQ(IxA,?xA)) that includes a digitally signed primary request indication (IXA,?XA) comprising a primary request indication (IXA) specifying a set of privacy sensitive data units (XA) for which a copy (CXA) is requested and a digital signature (?XA) of said first party, associated with said primary request indication (IXA).

Abstract: A method is provided for controlling exchange of privacy sensitive data between a first certified party server (A) associated with a first party and at least a second certified party server (B) associated with a second party using a certified intermediate server (Y) subject to authorizations (XAB) imposed by an authorizing party (X), using a public network. Therein the first certified party server (A) transmits (S2) to the certified intermediate server (Y) a primary request (ARQ(IxA,?xA)) that includes a digitally signed primary request indication (IXA,?XA) comprising a primary request indication (IXA) specifying a set of privacy sensitive data units (XA) for which a copy (CXA) is requested and a digital signature (?XA) of said first party, associated with said primary request indication (IXA).

Abstract: Method and systems for synchronizing files on a target storage medium with files on a source storage medium, where the target storage medium is divided into pages of a given size. If a file on the target storage medium has been modified compared to a corresponding file on the source storage medium, the page(s) involved are marked as free and all files that are stored in whole or in part on the page(s) receive a status of “to be copied to target storage medium”. For each page of the target storage medium that is marked as free, a selection is made from the files having such a status by repeatedly selecting the relatively largest file not yet selected that can be accommodated on the page, taking into account earlier files selected for the page, and for each page, copying the selection for that page to the target storage medium.