On Tue, Mar 03, 2020 at 03:42:21PM -0500, James Bottomley wrote: > On Tue, 2020-03-03 at 22:06 +0200, Jarkko Sakkinen wrote: > > On Mon, Mar 02, 2020 at 07:27:57AM -0500, James Bottomley wrote: > > > Modify the TPM2 key format blob output to export and import in the > > > ASN.1 form for TPM2 sealed object keys. For compatibility with > > > prior > > > trusted keys, the importer will also accept two TPM2B quantities > > > representing the public and private parts of the key. However, the > > > export via keyctl pipe will only output the ASN.1 format. > > > > > > The benefit of the ASN.1 format is that it's a standard and thus > > > the > > > exported key can be used by userspace tools (openssl_tpm2_engine, > > > openconnect and tpm2-tss-engine). The format includes policy > > > specifications, thus it gets us out of having to construct policy > > > handles in userspace and the format includes the parent meaning you > > > don't have to keep passing it in each time. > > > > > > This patch only implements basic handling for the ASN.1 format, so > > > keys with passwords but no policy. > > > > > > Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.c > > > om> > > > > tpm_key (like you have tpm2_key prefix). > > OK, I should probably do tpm2_key as the prefix since TPM 1.2 cannot do > policy, that's a TPM 2 only thing. Agreed that would be even better. /Jarkko
