US Patent 10528624 Optimal hash calculation of archive files and their file entries

The present disclosure involves systems, software, and computer implemented methods for calculating hashes of archive files and their file entries. In one example, a method may include receiving an archive file which includes at least one compressed file, storing the archive file by sending a first copy of the archive file stream to a first processing thread which stores the archive file in a local file system, and applying a hash function to the archive file and the at least one compressed file to create hash values corresponding to the archive file and the at least one compressed file by sending a second copy of the archive file stream to a second processing thread, which applies the hash function to the archive file and the at least one compressed file to create the hash values and is executed in parallel to the first processing thread.