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Re: Key Sizes in S/MIME v3.2

2008-02-19 15:37:40


From the mail discussion we had in December, it's pretty clear to me that
key sizes from 1024-2048 ought to be the MUST and other key sizes are MAY.
I'm suggesting the following text:

Key sizes from 1024 bits to 2048 buts MUST be supported. Keys sizes larger
than 2048 MAY be supported.


Should we put a MUST NOT or SHOULD NOT in for key sizes smaller than 1024?

I think we ought to be forgiving on receive.  Thus, I suggest:
Message originators SHOULD NOT use key sizes smaller than 1024 bits for private key operations.


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