Scylla is a file splitting algorithm. It splits a file into several other files, but they are useless unless all of them are present. Even if only one is missing, the output file will just be unreadable gibberish.
To encode, enter the Scylla type (the number of key files that will be generated) and a file you wish to encode.
To decode, enter the Scylla type (the number of key files used) and all the key files necessary to decode.