symmetric_state.hpp

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#pragma once
 
 
#include <esphome/api/bytes.hpp>
#include <esphome/api/crypto/cipher_state.hpp>
#include <esphome/api/crypto/primitives.hpp>
 
#include <string>
#include <utility>
 
namespace esphome::api::noise {
 
class SymmetricState {
public:
    void initialize(const std::string& protocol_name);
 
    void mix_key(ByteView input);
 
    void mix_hash(ByteView data);
 
    void mix_key_and_hash(ByteView input);
 
    ByteBuffer encrypt_and_hash(ByteView plaintext);
 
    ByteBuffer decrypt_and_hash(ByteView ciphertext);
 
    void split(CipherState& first, CipherState& second) const;
 
    [[nodiscard]] const Hash& handshake_hash() const noexcept {
        return h_;
    }
 
private:
    Hash ck_{};
    Hash h_{};
    CipherState cipher_;
};
 
}  // namespace esphome::api::noise