The above code is more like an encryption and decryption technique used to secure the data as no other human can read it as it stands.
The first block uses an Encryption key, and encrypts the data using that key, once done it then saves the data in a File. The data to encrypt comes from a stream - see the first
using
block, and the data is saved in another file
outputfilePath
.
The second block does the opposite, it reads the encrypted data, decrypts using the same key (you can see the first string being used in the method) and then writes it to another one. I am pretty sure the names of both the functions would have explained the entire function of code.
Anyways, you can read more on
Aes
and other classes on MSDN's Cryptography documentation
here[
^]. The document contains all of the classes and objects used here, and has sample code for using them too.