Flexibly loading a tamper resistant module

Apparatus for loading an application and its associated data onto a tamper resistant module (TRM), said apparatus comprising:

• an application provider comprising means for determining said TRM's input buffer size, means for dividing said application and its associated data into a plurality of segments, each segment adapted to be stored in said TRM's input buffer, wherein the size of each segment is a function of the determined input buffer size, and means for separately transmitting each said segment to said TRM;
• and
• a TRM comprising a memory containing at least one available space wherein each available space is defined by contiguous sequential memory addresses with no skipped addresses, means for receiving said transmitted segments, and means for storing each said transmitted segment in one of said available spaces of said TRM's memory depending on the size of each segment, wherein at least two segments are not stored in contiguous available spaces in said TRM, and said at least two segments that are not stored in contiguous spaces are contiguous with at least a portion of another application previously stored on said TRM.

A method for loading an application onto a tamper resistant module (TRM), the TRM comprising a memory containing at least two available different-sized spaces each defined by a contiguous memory space of sequential memory addresses with no skipped addresses, said different-sized spaces resulting from content deletions or additions to said memory and including at least one said space having a smallest-sized available area, said method comprising:

• dividing the application into a plurality of segments;
• and
• for at least one segment, determining which of the available spaces has the smallest-sized available area in the memory into which the at least one segment can be stored.

Application loading apparatus for loading an application onto a tamper resistant module (TRM), said apparatus comprising:

• an application provider for dividing the application into a plurality of segments;
• and
• a TRM comprising a memory containing at least two available spaces each defined by a contiguous memory space of sequential memory addresses with no skipped addresses, said different-sized spaces resulting from content deletions or additions to said memory and including at least one said space having a smallest-sized available area, the TRM determining, for at least one of the segments, which of the available spaces has the smallest available area in the memory into which the at least one segment can be stored.