I know how to compile C and C++ Source files using GCC and CC in the terminal, however i would like to know if its safe to include passwords in these files, once compiled.
For example.. i check user input for a certain password e.g 123, but it appears compiled C/C++ programs is possible to be decompiled.
Is there anyway to compile a C/C++ source file, while keeping the source completely hidden..
If not, could anyone provide a small example of encrypting the input, then checking against the password e.g: (SHA1, MD5)
It is not recommended to keep any sensitive static data inside code. You can use configuration files for that. There you can store whatever you like.
But if you really want to do that first remember that the code can be easily changed by investigating with a debugger and modifying it. Only programs that user doesn’t have access to can be considered safer (web sites for example).
The majority of login passwords (of different sites) are not stored in clear in the database but encrypted with algorithms MD5, SHA1, Blowfish etc.
I’d suggest you use one of these algorithms from OpenSSL library.
What I would do is using some public-key cryptographic algorithm. This will probably take a little longer to be cracked because in my opinion there is nothing 100% sure when talking about software protection.