Hardware-based encryption/decryption employing dual ported memory and fast table initialization

A bit table for tracking changes in data locations comprising:

• at least one bit corresponding to at least one respective addressed data location in a memory;
• a setting implementation for clearing the at least one bit to an initial configuration corresponding to a respective initial state of the respective at least one respective addressed data location;
• and
• a marking implementation for tracking changes in the memory, wherein the marking implementation changes the state of the at least one bit from the initial configuration, to correspond to a respective change in the respective addressed data location, wherein an initial configuration of the addressed data location is presumed unless a respective corresponding change in the bit table is indicated.

A method of tracking changes to data locations in a memory using a bit table having at least one bit corresponding to an initial configuration of at least one respective addressed data location in the memory, comprising:

• marking the at least one bit to track changes in the memory, wherein the step of marking includes changing the state of the at least one bit from the initial configuration, to correspond to a respective change in the respective addressed data location;
• presuming an initial configuration of the addressed data location in the event the state of the at least one bit is not changed;
• and
• reading the addressed data location in the event the state of the at least one bit is changed.

A system for tracking changes to data locations in a memory, comprising:

• a bit table means for associating at least one bit to a respective at least one addressed data location in the memory;
• means adapted for setting an initial configuration of the at least bit;
• means adapted for marking the at least one bit to track changes in the memory, wherein the means adapted for marking includes means for changing the state of the at least one bit from the initial configuration, to correspond to a respective change in the respective addressed data location;
• means adapted for presuming an initial configuration of the addressed data location in the event the state of the at least one bit is not changed;
• and
• means adapted for reading the addressed data location in the event the state of the at least one bit is changed.