Method for generating an update file and corresponding server device, updating method and corresponding client device, updating method and corresponding system

A method, comprising:

• updating a binary file of a first version of software to a binary file of a second version of the software based on an update file, the updating including:
• identifying, based on the update file, one or more sections of a plurality of sections of the binary file of the first version of the software;
• logically combining, bit-by-bit, bits of the identified sections of the binary file of the first version of the software with bits of the update file corresponding to the identified sections, the logically combining including:
• applying an exclusive or operation;
• or
• applying an exclusive nor operation;
• and
• replacing bits of the identified sections of the binary file of the first version of the software with results of the logical combining.

A system, comprising:

• an interface;
• and
• processing circuitry coupled to the interface, wherein the processing circuitry, in operation, builds an update file associated with a binary file of a first version of software, the building the update file including:
• compiling source code associated with a second version of the software, the compiling generating a binary file of the second version of the software;
• mapping memory locations to sections of the binary file of the second version of the software based on mappings of sections of the binary file of the first version of the software to memory locations, wherein a section of the binary file of the second version of the software having a corresponding section in the binary file of the first version of the software is mapped to a same memory location as the corresponding section of the binary file of the first version of the software;
• for one or more sections of a plurality of sections of the binary file of the first version of the software, logically combining, bit-by-bit, bits of the binary file of the first version of the software with bits of the corresponding section of the binary file of the second version of the software, the logically combining including:
• applying an exclusive or operation;
• or
• applying an exclusive nor operation;
• and
• building the update file based on the mapping of the memory locations to sections of the binary file of the second version of the software and based on results of the logical combining of the one or more sections of the plurality of sections of the binary file of the first version of the software with the corresponding sections of the binary file of the second version of the software.

A device, comprising:

• a memory;
• and
• processing circuitry coupled to the memory, wherein the processing circuitry, in operation, updates a binary file of a first version of software to a binary file of a second version of the software based on an update file, the updating including:
• identifying, based on the update file, one or more sections of a plurality of sections of the binary file of the first version of the software;
• logically combining, bit-by-bit, bits of the identified sections of the binary file of the first version of the software with bits of the update file corresponding to the identified sections, the logically combining including:
• applying an exclusive or operation;
• or
• applying an exclusive nor operation;
• and
• replacing bits of the identified sections of the binary file of the first version of the software with results of the logical combining.

A non-transitory computer-readable medium having contents which cause a server to build an update file associated with a first version of software, the building the update file including:

• compiling source code associated with a second version of the software, the compiling generating a binary file of the second version of the software;
• mapping memory locations to sections of the binary file of the second version of the software based on mappings of sections of a binary file of the first version of the software to memory locations, wherein a section of the binary file of the second version of the software having a corresponding section in the binary file of the first version of the software is mapped to a same memory location as the corresponding section of the binary file of the first version of the software;
• for one or more sections of a plurality of sections of the binary file of the first version of the software, logically combining, bit-by-bit, bits of the binary file of the first version of the software with bits of the corresponding section of the binary file of the second version of the software, the logically combining including:
• applying an exclusive or operation;
• or
• applying an exclusive nor operation;
• and
• building the update file based on the mapping of the memory locations to sections of the binary file of the second version of the software and on results of the logical combining of the one or more sections of the plurality of sections of the binary file of the first version of the software with the corresponding sections of the binary file of the second version of the software.

A non-transitory computer-readable medium having contents which cause a device to update a binary file of a first version of software to a binary file of a second version of the software, the updating including:

• identifying one or more sections of a plurality of sections of the binary file of the first version of the software;
• logically combining, bit-by-bit, bits of the identified sections of the binary file of the first version of the software with bits corresponding to the identified sections, the logically combining including:
• applying an exclusive or operation;
• or
• applying an exclusive nor operation;
• and
• replacing bits of the identified sections of the binary file of the first version of the software with results of the logical combining.