Device and method for updating code

Method for a software-acquiring entity (20) of arriving from an existent first signed piece of code (11) at a second signed piece of code (12, 13), both pieces of code (11, 12, 13) having been generated at a software provider (25) by use of a first software archive generator (2) under use of generation instructions (8), comprising the steps of

• sending acode amendment request (16) to said software provider (25) for the delivery of a difference code (4, 5) which comprises the steps necessary to arrive from said first signed piece of code (11) at said second signed piece of code (12, 13),
• receiving said difference code (4, 5),
• combining said difference code (4, 5) with said first signed piece of code (11) by use of a second software archive generator (7), thereby generating said second signed piece of code (12, 13), whereby said second software archive generator (7) is fed with those generation instructions (8) that were used by said first software archive generator (2) for the generation of both pieces of code (11, 12, 13).

Code amendment enabler enabling a software-acquiring entity (20) to arrive from an existent first signed piece of code (11) at a second signed piece of code (12, 13), both pieces of code (11, 12, 13) having been generated by use of a first software archive generator (2) under use of generation instructions (8), comprising

• a difference code generator (10) for generating a difference code (4, 5) that comprises the steps necessary to arrive from said first signed piece of code (11) at said second signed piece of code (12, 13), which difference code (4, 5) is usable at said software-acquiring entity (20) to be combined with said first signed piece of code (11) by a second software archive generator (7) to generate said second signed piece of code (12, 13), whereby said second software archive generator (7) is fed with the generation instructions (8),
• an output unit (3) for providing to said software-acquiring entity (20) said difference code (4, 5).

Code amendment device for arriving from an existent first signed piece of code (11) at a second signed piece of code (12, 13), both pieces of code (11, 12, 13) having been generated at a software provider (25) by use of a first software archive generator (2) under use of generation instructions (8), comprising

• a second software archive generator (7) for combining a received difference code (4, 5) with said first signed piece of code (11), thereby generating said second signed piece of code (12, 13), whereby said second software archive generator (7) is to be fed with those generation instructions (8) that were used by said first software archive generator (2) for the generation of both pieces of code (11, 12, 13)