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Ceremony Analysis

Ceremony Analysis. Carl Ellison Microsoft 20 April 2005. Bob. Alice. Carol. Distributed System w/ Security. A. B. C. D. Alice. Bob. Carol. Design Process. A. B. C. D. Alice. Bob. Carol. The Real (Full) Protocol. A. B. C. D. No, THIS is the Protocol !!!!. A. B. C.

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Ceremony Analysis

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  1. Ceremony Analysis Carl Ellison Microsoft 20 April 2005

  2. Bob Alice Carol Distributed System w/ Security A B C D

  3. Alice Bob Carol Design Process A B C D

  4. Alice Bob Carol The Real (Full) Protocol A B C D

  5. No, THIS is the Protocol !!!! A B C D

  6. Alice Bob Carol OK, this is a Ceremony A B C D Ceremony  Protocol

  7. HTTPS / SSL / TLS Web Site User HTTP(S) PC a Establish Channel b c d e f

  8. HTTPS MITM Protocol Legitimate MITM User HTTP(S) HTTP(S) PC Channel Setup a b c d

  9. HTTPS MITM Ceremony Legitimate MITM User HTTP(S) HTTP(S) PC a Channel Setup b c d e f g

  10. HTTPS Example Phishing

  11. S/MIME Ceremony Sender Recipient PC PC a b c d e f

  12. S/MIME Message

  13. S/MIME Reply

  14. S/MIME Ceremony Concerns Sender Recipient PC PC a b c d e f

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