Methods, systems, and computer readable media for out-of-band transport layer security (TLS) version and parameter negotiation using a network function repository function (NRF)

A system comprising:

• a consumer network function including at least one first processor and a first memory;
• a network function repository function (NRF) including at least one second processor and a second memory, the NRF being configured for:
• registering a producer network function, including receiving a first transport layer security (TLS) version for the producer network function;
• and
• providing, by the NRF, the first TLS version of the producer network function to the consumer network function in a network function discovery response;
• and
• wherein the consumer network function is configured for establishing a service based interface (SBI) communication with the producer network function based on the first TLS version and a second TLS version for the consumer network function.

A non-transitory computer readable medium having stored thereon executable instructions that when executed by a processor of a computer control the computer to perform steps comprising:

• registering, at a network function repository function (NRF) of a telecommunications network, a producer network function, including receiving a first transport layer security (TLS) version for the producer network function;
• providing, by the NRF, the first TLS version of the producer network function to a consumer network function in a network function discovery response;
• and
• establishing, by the consumer network function, a service based interface (SBI) communication with the producer network function based on the first TLS version and a second TLS version for the consumer network function.