Why does the application use open-source algorithms?
The application uses open-source (or, public) algorithms because the security of public algorithms does not in any way depend on keeping the way they work secret. Secrets, of course, cannot be kept. Any application containing a secret algorithm can be decompiled, the byte code can be analyzed, and the way it works can eventually be reverse engineered. Another advantage of public algorithms is that they are the ones that have been most seriously challenged. Experts from many countries examine them over the course of many years. No amount of private research on a new or secret algorithm can beat the kind of long standing academic and public scrutiny to which public algorithms are exposed.
