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Subject: ISSUE:[UC-12-01:Encryption] REVISED
Bob makes a very good point - UC-12-01 has nothing to do with privacy; it is concerned with confidentiality and integrity. I've revised the text at the end of this message. > -----Original Message----- > From: George_Robert_Blakley_III@tivoli.com > [mailto:George_Robert_Blakley_III@tivoli.com] > Sent: Tuesday, February 27, 2001 11:27 AM > To: Ahmed, Zahid > Cc: 'Irving Reid'; security-use@lists.oasis-open.org; > 'security-bindings@lists.oasis-open.org' > Subject: RE: ISSUE:[UC-12-01:Encryption] (was RE: Comments on > Straw Man 2: Protection of message contents) > ... > I think the note below uses "privacy" when it means "confidentiality". > > Confidentiality and integrity SHOULD be the job of the > binding; privacy > probably CANNOT be protected by > any mechanism we specify in the binding, ... > --bob ------------------------------------------------------ ISSUE:[UC-12-01:Encryption] UC-9-02:PrivacyStatement addresses the importance of sharing data only as needed between security zones (from asserting party to relying party). However, it is also important that data not be available to third parties, such as snoopers or untrusted intermediaries. One possible solution for implementors is to use secure channels between relying party and asserting party. Another is specifically encrypt the SAML data, either with a shared secret or with public keys. Possible Resolutions: 1) Include an allowance for explicit use of encryption, such as XML Encryption http://www.w3.org/Encryption/2001/), within SAML messages. SAML messages could then be transferred securely on any protocol. 2) Specify security properties in the Bindings documents. Each binding must include a description of how the confidentiality and integrity of SAML messages can be protected within that binding. Examples: S/MIME for MIME, HTTP/S for HTTP. -------------------------------------------------------------------------- - irving -
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