@techreport{srivastava-stir-sip-request-context-00,
    number =    {draft-srivastava-stir-sip-request-context-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-srivastava-stir-sip-request-context/00/},
    author =    {Aviral Srivastava},
    title =     {{SIP Request Context Binding for STIR Connected Identity}},
    pagetotal = 11,
    year =      2026,
    month =     aug,
    day =       16,
    abstract =  {This document updates RFC 9970. RFC 9970 recommends STIR PASSporTs on re-INVITE and BYE requests after connected identity has been established in a SIP dialog, and states that this prevents spoofed mid-dialog or dialog-terminating events. The baseline PASSporT construction used by RFC 8224 does not bind the SIP request method, CSeq number, Call-ID, or dialog tags. Consequently, a valid PASSporT can remain valid when a fresh signed in-dialog request is transformed into a different SIP request whose authenticated identity fields are unchanged. This document defines the "sipctx" PASSporT type. It binds the SIP request method and dialog/sequence context to the PASSporT. Implementations relying on PASSporT validation for mid-dialog request authenticity use this context binding as specified in this document.},
}