cipher_state.hpp

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#pragma once
 
 
#include <esphome/api/bytes.hpp>
#include <esphome/api/crypto/primitives.hpp>
 
#include <cstdint>
 
namespace esphome::api::noise {
 
class CipherState {
public:
    void initialize_key(const SymmetricKey& key);
 
    [[nodiscard]] bool has_key() const noexcept {
        return has_key_;
    }
    [[nodiscard]] std::uint64_t nonce() const noexcept {
        return nonce_;
    }
 
    ByteBuffer encrypt_with_ad(ByteView ad, ByteView plaintext);
 
    ByteBuffer decrypt_with_ad(ByteView ad, ByteView ciphertext);
 
private:
    SymmetricKey key_{};
    std::uint64_t nonce_ = 0;
    bool has_key_ = false;
};
 
}  // namespace esphome::api::noise