mirror of
https://github.com/patchzyy/wiicompiled
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patchzyy
25 lines
739 B
C++
25 lines
739 B
C++
#pragma once
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// The Wii's extension controller encryption: the game writes a random key to
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// the extension, which then XORs and offsets every byte it reports.
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#include <array>
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#include <cstddef>
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#include <cstdint>
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#include <optional>
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namespace Wiimote::ExtCrypto {
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struct Tables {
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std::array<uint8_t, 8> ft{};
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std::array<uint8_t, 8> sb{};
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void Encrypt(uint8_t* data, uint32_t address, size_t length) const;
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void Decrypt(uint8_t* data, uint32_t address, size_t length) const;
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};
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// Tables for the key the game wrote to registers 0x40..0x4F, or nullopt when it
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// does not come from the first-party key schedule.
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std::optional<Tables> FromKey(const std::array<uint8_t, 16>& keyData);
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} // namespace Wiimote::ExtCrypto
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