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draft-ietf-sip-dtls-srtp-framework-00

draft-ietf-sip-dtls-srtp-framework-00. IETF 70 Vancouver. Changes since draft-fischl-sipping-media-dtls-03.txt. Added section on best effort encryption Added mmusic-sdp-capability-negotiation to example Added appendix with requirements analysis. Issue 1: Identity.

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draft-ietf-sip-dtls-srtp-framework-00

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  1. draft-ietf-sip-dtls-srtp-framework-00 IETF 70 Vancouver

  2. Changes since draft-fischl-sipping-media-dtls-03.txt • Added section on best effort encryption • Added mmusic-sdp-capability-negotiation to example • Added appendix with requirements analysis

  3. Issue 1: Identity • Issue: Use of RFC 4474 for phone numbers • Calls from sip:alice@example.com aren’t a problem • Calls from sip:+14155551212@example.com present issues • No single authoritative entity that can assert who is allowed to use a particular E.164 number • Who does the target trust to sign numbers? • This is an intrinsic problem with telephone numbers

  4. Issue 2: SRTP / TCP • Issue: DTLS-SRTP over TCP vs RTP over TLS • Resolution: Agreement in Chicago. Need to update the document

  5. Issue 3: Anonymity • Issue: Anonymity • Resolution: Just need to update the text to say that DTLS isn't going to break existing anonymity

  6. Issue 4: middle box issues • Issue: SBC issues with blocking key exchange before a 200 OK • Not specific to DTLS-SRTP • discussed in draft-sipping-stucker-media-path-middleboxes-00

  7. Next… • Apply edits • Ready for WGLC to meet the milestone?

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