CompileTimeEncryption

C++20's introduction of structures as template parameters has introduced an easy way of compile-time string encryption.

Features

• Different keys and ciphertext generated with each compilation
• Different keys and ciphertext per-source file and line number. Encrypting the same string twice will yield two different ciphertexts and keys
• Works in release and debug builds, no matter the optimization
• Uses SSE instructions to decrypt 16 bytes of plaintext at a time
• CMake option ENCRYPT_STRINGS, which can be used to selectively disable string encryption for some build types (if you do not use CMake, you must define CTE_ENCRYPTSTRINGS yourself)

Usage

• Simply include XorStr.h, and wrap plaintext strings in XorStr, which will return a const char*. An optional XorStr_ macro is also provided that will return the underlying std::array<char>, aligned and padded to 16 bytes