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Subject: Re: [pkcs11] Groups - Slides: PKCS #11 AEAD Functions at 2014-02-28 F2F uploaded
I did a review pass on the spec document for this proposal, not the slides (couldn't find the email announcing the upload so I could reply to it) and the annotated version is attached. It's getting closer to my proposal and I noted some areas where it still needs improvement. I wouldn't go forward with this without adding the message based calls for Sign and Verify for example.On 2/28/2014 12:52 PM, Wan-Teh Chang wrote:
Submitter's message
I will be using these slides for my talk on PKCS #11 AEAD functions at the F2F meeting today.
-- Wan-Teh Chang
Document Name: Slides: PKCS #11 AEAD Functions at 2014-02-28 F2F
Description
Wan-Teh Chang's presentation slides on PKCS #11 AEAD functions at the F2F
meeting on 2014-02-28
Download Latest Revision
Public Download Link
Submitter: Wan-Teh Chang
Group: OASIS PKCS 11 TC
Folder: Documents
Date submitted: 2014-02-28 09:52:38
With respect to the API, I wouldn't attempt to reuse any current API calls to implement either AEAD or message based stuff. The hard decision is to open up the API to change - once you do that its simply a matter of crafting the set of calls that you need rather than trying to impedence match the new functions to the old API.
With respect to the proposal, I think a single pair of C_NewAssociation and C_CloseAssociation API calls will work to cover all of encrypt, decrypt, sign and verify rather than C_NewEncryptAssociation, C_NewSignAssociation etc.... If you think of the C_EncryptMessage and C_SignMessage as macros for a C_EncryptInit/C_Encrypt which use data from the association, I can't see any reason why you need a new association function per message type.
Mike
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