Method MixKey

libi2pd/Crypto.cpp:844–849

	}

	void NoiseSymmetricState::MixKey (const uint8_t * sharedSecret)
	{
		HKDF (m_CK, sharedSecret, 32, "", m_CK);
		// new ck is m_CK[0:31], key is m_CK[32:63]
		m_N = 0;
	}

	bool NoiseSymmetricState::Encrypt (const uint8_t * in, uint8_t * out, size_t len)
	{