[gnutls-devel] GnuTLS | Port openconnect TPM2 code (!1460)

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Sun Sep 26 21:44:49 CEST 2021

James Bottomley commented on a discussion: https://gitlab.com/gnutls/gnutls/-/merge_requests/1460#note_687196747

Well, I don't know what to say.  The main reason for using an EC parent
for RSA keys is that TPM2_CreatePrimary for an RSA primary can take
minutes to run on a slow TPM ... you never want to have that happen
because the primary is generated on the fly for most key operations;
whereas an EC primary is an easy calculation and takes milliseconds
even on the slowest of TPMs.  I didn't think anyone would be stupid
enough to try to do an ephemeral RSA primary, so I never bothered even
mentioning it in the docs.


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