A method, system and non-transitory computer readable instructions for application patching comprising, concatenating compressed data or uncompressed data or a mixture of compressed and uncompressed data into a continuous data set into a continuous data set and dividing the continuous data set into variable sized data chunks. Compressing each of the variable sized data chunks and dividing each of the variable sized data chunks into fixed size data blocks. Encrypting the fixed size data blocks to generate encrypted fixed size data blocks and storing the encrypted fixed sized data blocks or sending the encrypted fixed size data blocks over a network.