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Re: correction on SPIs
I will admit, I am completely confused here about your "combined" or
"separate" number spaces. I think that some of the folks on the list
are talking past each other.
Here's what Karn did (and Simpson has a slight variant):
- Each SPI can be used by both AH and ESP.
- AH and ESP have different keys, even when using the same SPI.
- AH and ESP use different algorithms, even when using the same SPI.
- AH and ESP can both be negotiated at the same time (the same exchange).
So, I think of this as a "combined" number space, with orthogonal usage.
Is that what you mean?
I hope that this is clearer in the next Photuris draft.
Bill.Simpson@um.cc.umich.edu
Key fingerprint = 2E 07 23 03 C5 62 70 D3 59 B1 4F 5E 1D C2 C1 A2