Methods, systems, and computer readable media for sharing key identification and public certificate data for access token verification

Abstract

A method for sharing key identification (key ID) and public certificate data for access token verification comprises, at a network function (NF) repository function (NRF) including at least one processor, receiving, from a producer NF, an NF registration message including key ID version information. In response to detecting the key ID version information, sending, to the producer NF, an NF registration response message including a current key ID version value, at least one digital certificate, and at least one corresponding public key to the producer NF. The method further includes receiving, from the producer NF, an NF update message that includes the current key ID version value and in response to determining that the current key ID version value in the NF update message does not match an updated key ID version value maintained at the NRF, sending an NF update response message that the updated key ID version value, at least one updated digital certificate, and at least one corresponding updated public key to the producer NF.