CODEWITHSUNDEEP
c++encryptionstd
SundayMonday
SundayMonday

Reputation: 19727

String obfuscation using C++ standard ibrary

I want to obfuscate some string data stored locally on iOS/Android device. Something similar to a high score in a game. My goal is to thwart only the laziest people, so encrypting the data really isn't necessary. What does the C++ Standard Library provide that can help?

I looked briefly at cryptopp.com and libtomcrypt but I think they're overkill for what I want to achieve.

Upvotes: 2

Views: 1561

Answers (2)

superreeen
superreeen

Reputation: 149

For your requirement you can use the string encryption offered by antispy C/C++ Obfuscation Library for all platforms.

Upvotes: 1

Baum mit Augen
Baum mit Augen

Reputation: 50053

Assuming the string to be "encrypted" is not terribly long, you can use a XOR cipher.

Generate a random string with the same length as your input string and xor your input with it to encrypt and decrypt.

void xor_strings (string& message, const string& key) {
    for (size_t i = 0; i < message.size(); ++i)
        message[i] ^= key[i];
}

If you save both strings in your file, it will just contain two random strings.

Upvotes: 1

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