AutoCrypt

header-only C++20 string obfuscator that hides literals from .rdata via compile-time DFA

Features

• no plaintext strings via static analysis
• compile-time dfa
• strict memory wiping
• emulator makes brrr
• not xor

how it works

• compile-time: custom fnv-1a + bitwise shifts encrypt your strings into a multi-layer dfa matrix. each AUTOSTR macro call uses __TIMESTAMP__ and __COUNTER__ for uniq key
• runtime: decrypts data in reverse order using a volatile state-machine loop
• security: strings live only on the stack as temporaries and get forcibly wiped with zeroes right after destruction

Usage

#include <iostream>
#include <string>
#include "autocrypt.hpp"

int main() {     // @ default usage:
    std::cout << AUTOSTR("enter key: ");
    std::string input;
    std::cin >> input;

    if (input == AUTOSTR("super_secret")) {
        std::wcout << AUTOSTR(L"done") << std::endl;         // output encrypted wide string
    } else {
        std::wcout << AUTOSTR(L"denied") << std::endl;
    }

    return 0;
}

IDA Pro Example