Add Blobs method for AK

Author: hslatman

attest/attest.go

@@ -105,6 +105,7 @@ type ak interface {
 	quote(t tpmBase, nonce []byte, alg HashAlg) (*Quote, error)
 	attestationParameters() AttestationParameters
 	certify(tb tpmBase, handle interface{}, qualifyingData []byte) (*CertificationParameters, error)
+	blobs() ([]byte, []byte, error)
 }
 
 // AK represents a key which can be used for attestation.
@@ -155,6 +156,11 @@ func (k *AK) Certify(tpm *TPM, handle interface{}) (*CertificationParameters, er
 	return k.ak.certify(tpm.tpm, handle, nil)
 }
 
+// Blobs returns public and private blobs to be used by tpm2.Load().
+func (k *AK) Blobs() (pub, priv []byte, err error) {
+	return k.ak.blobs()
+}
+
 // AKConfig encapsulates parameters for minting keys. This type is defined
 // now (despite being empty) for future interface compatibility.
 type AKConfig struct {