The RADb was developed in the early 1990s as part of the National Science Foundation (NSF)-funded Routing Arbiter Project.
A write-permissions access model was subsequently added, in which individuals or roles representing each Autonomous System had authority to write records related to that AS, including which IP address blocks it would originate routing advertisements for, and which other Autonomous Systems were allowed to advertise transit routing paths to it.
The first generation of security allowed network operators to specify a MAIL-FROM attribute, requiring that updates be sent from a specific email address.
[5] Subsequent work by the Regional Internet Registries created additional IRRs which strictly tied permission to advertise IP blocks to RIR allocation data.
But since DNSSEC already existed and had been applied to the in-addr zone, no end-to-end cryptographic integrity mechanism was ever added to RPSL.