Apparatuses and methods for generating domain-specific codes

A wired communication network including plurality of communicatively-interconnected communications domains, each of the communications domains including circuits configured and arranged to communicate with one another by one or more channels conveying data in a wired communication network specific to the communications domains, and a communications apparatus comprising:

• an electronic switch, integrated as part of a first domain of the plurality of communicatively-interconnected communications domains, wherein the electronic switch is configured and arranged to effect secure communications of data over the one or more channels specific to communications between the first domain and a second domain of the plurality of communicatively-interconnected communications domains, by
• using a first circuit configured and arranged to obtain and process sampled channel properties associated with the one or more channels specific to the first domain and the wired communication network,
• communicating, with another electronic switch integrated as part of the second domain of the plurality of communicatively-interconnected communications domains, other sampled channel properties associated with the one or more channels specific to the second domain and the wired communication network,
• using a second circuit configured and arranged to generate, in response to the first circuit and the communication, an inter-domain code that is generated pseudo-randomly using the processed sampled channel properties and the communicated sampled channel properties, the inter-domain code being used for coding data conveyed over one or more channels specific to communications between the first domain and the second domain, and
• using the second circuit to generate a domain-specific code using the processed sampled channel properties specific to the first domain and a master code provided to the plurality of communicatively-interconnected communications domains, and using the domain-specific code to communicate between circuits within the first domain, the domain-specific code being different than the inter-domain code.