Re: [pkcs11] CKM_RSA_PKCS_TPM_1_1 update to TPM 1.2

[Michael StJohns <msj@nthpermutation.com>]

On 7/10/2013 11:46 AM, Alexander.Krasnov@infineon.com wrote:
> Current spec defines two TPM related mechanisms:
> CKM_RSA_PKCS_TPM_1_1
> CKM_RSA_OAEP_TPM_1_1
>
> While mechanisms definitions are fine, the naming/versioning mixes together TPM 1.1 and 1.2:
>
> "The TPM 1.1 PKCS #1 v1.5 RSA mechanism, denoted CKM_RSA_PKCS_TPM_1_1, is a multi‐use mechanism based
> on the RSA public‐key cryptosystem and the block formats initially defined in PKCS #1 v1.5, with additional
> formatting rules defined in TCG TPM Specification Version 1.2."
>
> Considering that a) TPM 1.2 spec is available since 2003 and b) there should not be too many TPMs 1.1 in the wild, it would be logical to name these mechanisms: 
> CKM_RSA_PKCS_TPM_1_2
> CKM_RSA_OAEP_TPM_1_2
>
> Opinions?

I think the mechanisms were originally defined before TPM1.2 was
released. I did a quick look and these mechanisms didn't appear to
change between TPM1.1 and TPM1.2.

It is strange that the text in the body references 1.2 rather than 1.1
(or doesn't reference both). An appropriate fix may be to note the mech
was originally specified in 1.1 and did not change for 1.2.

Mike



>
>
> Alex Krasnov.
>
>
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