A command-line tool to juggle files, and de-juggle juggled ones.
While taking the Operating Systems course, I have used many system calls and played with file systems, file descriptors, and other things. At the very end, while studying FAT file systems, the idea of using a linked-list-like structure to store files seemed like something that I would love to try. After a while I started to work on this, which lead to the creation of File Juggler.
File Juggler has two executable files, one for juggling files, and the other one is for dejuggling previously juggled ones. It is not meant to be used as a tool to encrypt data, but it provides scrambled non-sensical files enough to keep untrained eyes away.
To juggle a file, you need to select the block size. Each block has an unsigned integer to store the next data block position. Therefore, a juggled file will have 0.4% to %0.01 overhead for each file depending on the block size. Juggling also inverts the data bits, so any plain-text file cannot be read by simply opening the file.
- Build the app using
make. - To juggle files, use
./build/juggler block-size original-file target-file - To de-juggle, use
./build/dejuggler starting-block juggled-file target-file
Block size can be either 1, 2, 4, 8, 16 or 32 KB's.
For example, to juggle a file named Pomplamoose-BustYourKneeCaps.flac using 32 KB blocks, you should type ./build/juggler 32 Pomplamoose-BustYourKneeCaps.flac JuggledPomplamoose.jgg. This will give an output with the initial block number, which you must keep to de-juggle the file properly. Let's say the initial block is 47. Then, to de-juggle you should type ./build/dejuggler 47 JuggledPomplamoose.jgg BustYourKneeCaps.flac
I love hearing feedback! Please let me know by sending an e-mail. Pull requests are always welcome.