Thanks for the reply Kenneth. Let me ask you this then. If you look at the
sealed file it has AES section in the beginning. My assumption was that
trousers would generate AES, seal data using AES algorithm and then encrypt AES
key with RSA and place it with the data. This approach would totally make sense
to me. You say that RSA algorithm alone is used for sealing data, so what AES
section in the sealed data is for then?
-Dmitri
> > Date: Mon, 17 Oct 2011 20:50:05 -0400 (EDT)
> > From: Dmitri Toubelis <[email protected]>
> >
> > However, I notice a strange behavior when
> > unsealing data - it takes too long. Here is what I did - I created
> > a
> > 40MB file with random data and run tpm_sealdata/tpm_unsealdata as
> > follows:
> 1 - RSA encryption (seal) is always much faster than decryption
> (unseal). It's
> the nature of the RSA math.
> 2 - No, it's not AES, it's RSA. The TPM does not expose any symmetric
> key
> algorithm.
> 3 - It intent of seal/unseal is to use short data streams, 10's of
> bytes,
> not 40 mbytes. Your top level design needs a rework.
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demand for specialized networking skills is growing even more rapidly.
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