METHOD OF MODIFYING SOFTWARE DISTRIBUTION PACKAGE WITHOUT RECALCULATING SIGNATURES FOR FILES WITHIN SOFTWARE DISTRIBUTION PACKAGE Russian patent published in 2015 - IPC G06F13/10 G06F9/00 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to modifying a software distribution package. A method of modifying a software distribution package comprises steps of creating a software distribution package which is an APK file using a assembling means, wherein the software distribution package contains compressed file data and digital signatures for all files; determining whether it is necessary to modify the created software distribution package using modification means; determining the size of the modification using the modification means; if the size of the modification is not greater than a given threshold, the modification means are used to modify the comments section in the software distribution package without recalculating digital signatures for files within the software distribution package; if the size of the modification is greater than the given threshold, the modification means are used to modify the shift region between the file structure of the software distribution package and the compressed data in the software distribution package without recalculating digital signatures for files within the software distribution package.

EFFECT: enabling modification of a software distribution package for the end user using a method of modifying a software distribution package without recalculating digital signatures for files within the software distribution package.

5 cl, 4 dwg