A simple way to encrypt/decrypt a CString?

[d00ape]

I’m going to Serialize a class with CString and int-members to a file and then transfer it over the network. One of the members is a password-like one and I would like it to be encrypted before the serialization.

Any tip fore easy implementation.

 

[Cagliostro]

the easyest way is XOR encription, but it is not the best.
For each sumbol you apply a XOR per bit
for example you have password key qwerty. And you have string, "hello my baby, I want to see you"
you encript like this:

hello my baby, I want to see you
^=
qwertyqwertyqwertyqwertyqwertyqw|erty
like this:
str[0] ^= q;
str[1] ^= w;
str[3] ^= e;
....
and you obtain some encripted string:
dfsdfsdfasddadfasdfwtkoeyjlkruju

after you send the string you can uncrypt it by aplaying XOR again:
dfsdfsdfasddadfasdfwtkoeyjlkruju
^= qwertyqwertyqwertyqwertyqwertyqw|erty
The operation will be the same:
obtained_str[0] ^= q;
obtained_str[1] ^= w;
obtained_str[3] ^= e;
.....
and you will obtain the originally created string:
hello my baby, I want to see you


Ion Filipski