How to encrypt GOST 28147-89?

Question

Java

Can't figure out what to do?
I read that the text is divided into blocks of 64 bits - does this mean you need to use the binary representation of characters ?? If you need to use this view how to do it in Java? That is, each character should be translated into binary system? And what type of memory to use, byt, I can’t figure out how, although I googled a lot of sites. It is not necessary to rub about the algorithm, I do not understand the very essence of this method.

Answer 1

well, if for example you can read from a file, you can use a scanner, read about this function - https://docs.oracle.com/javase/7/docs/api/java/uti... you create an array where you shove 8 bytes into each cell and further work with them