1 / 8

OAuth Design Team Call

OAuth Design Team Call. 11 th February 2013. Security Design Requirements. Focus on symmetric key cryptography Use MAC Token spec as a starting point Lifetime of session key = Lifetime of access token Unless the sequence number space wraps Replay protection: Timestamp + [sequence number]

yuval
Download Presentation

OAuth Design Team Call

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. OAuth Design Team Call 11th February 2013

  2. Security Design Requirements • Focus on symmetric key cryptography • Use MAC Token spec as a starting point • Lifetime of session key = Lifetime of access token • Unless the sequence number space wraps • Replay protection: Timestamp + [sequence number] • Support for TLS channel bindings • Integrity protection for data exchange between the client and the resource server, and vice versa. • “Flexibility” regarding keyed message digest computation • Crypto-Agility: Algorithm indication from Authorization Server to the Client.

  3. Remaining Decisions • Key distribution: • Three mechanisms presented. Which one should focus on? • Key naming: New key identifier (kid) parameter? • Allow Client to indicate to which RS is wants to talk to?

  4. DKIM Signature Recap • body-hash: is the output from hashing the body, using hash-alg. • data-hash: is the output from using the hash-alg algorithm, to hash the header including the DKIM-Signature header, and the body hash. • h-headers: is the list of headers to be signed, as specified in the "h" parameter. • h= Signed header fields • Example: h=Received : From : To : Subject : Date : Message-ID; • Alternative: IANA registration for example

  5. Key Distribution • Three techniques: • Key Transport • “Key Retrieval” • Key Agreement • Key point: What is MTI?

  6. How RS obtains the Session Key?Option#1: Key Transport

  7. How RS obtains the Session Key?Option#2: “Key Retrieval” Key Request

  8. How RS obtains the Session Key?Option#3: Key Agreement Key Request

More Related