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If you're savy enough to do that, then you are also competent enough to send the file in numerous other ways. Your not the target audience. Also, you wouldn't
by ceph_ 9y ago
If you're savy enough to do that, then you are also competent enough to send the file in numerous other ways. Your not the target audience.
Also, you wouldn't need add a file. Zipping it alone would be enough to change the hash.
- pbhjpbhj 9y agoI assumed zipping to be determinative and that a standard gzip would lead to a "known" hash, ergo the idea to create a unknown zip file by adding some bytes.
- ceph_ 9y agoIt would be determinative only if all the header fields[1] stayed identical. A change in something like file name or mod time, would change the hash of the zipped archive without affecting the hash of the actual file. I don't think you can expect the file mod time to be identical, as it isn't preserved through many forms of file distribution. [1]https://en.wikipedia.org/wiki/Zip_(file_format)#File_headers https://en.wikipedia.org/wiki/Zip_(file_format)#File_headers