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package tpm
import (
"context"
"github.com/google/go-tpm/tpmutil"
"go.step.sm/crypto/tpm/tss2"
)
const (
// Defined in "Registry of reserved TPM 2.0 handles and localities",
// and checked on a glinux machine. This is the default parent handle
// used by go-tpm and go-attestation, and thus also the default handle
// set when marshaling to the TSS2 format.
commonSrkEquivalentHandle = tpmutil.Handle(0x81000001)
)
// ToTSS2 gets the public and private blobs and returns a [*tss2.TPMKey].
func (ak *AK) ToTSS2(ctx context.Context) (*tss2.TPMKey, error) {
blobs, err := ak.Blobs(ctx)
if err != nil {
return nil, err
}
return tss2.New(
blobs.public,
blobs.private,
tss2.WithParent(commonSrkEquivalentHandle), // default parent used by go-tpm/go-attestation
), nil
}
// ToTSS2 gets the public and private blobs and returns a [*tss2.TPMKey].
func (k *Key) ToTSS2(ctx context.Context) (*tss2.TPMKey, error) {
blobs, err := k.Blobs(ctx)
if err != nil {
return nil, err
}
return tss2.New(
blobs.public,
blobs.private,
tss2.WithParent(commonSrkEquivalentHandle), // default parent used by go-tpm/go-attestation
), nil
}
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