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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package optee
import (
"github.com/snapcore/snapd/osutil"
"github.com/snapcore/snapd/testutil"
)
var (
newClient = newFDETAClient
)
// FDETAClient represents an interface to our FDE trusted application.
type FDETAClient interface {
// Present returns true if the FDE TA is present.
Present() bool
// DecryptKey requests that the FDE TA decrypt the given key, using the
// handle as supplimentary information. The decrypted key is returned.
DecryptKey(input []byte, handle []byte) ([]byte, error)
// EncryptKey requests that the FDE TA encrypt the given key. A handle and
// the encrypted key are returned.
EncryptKey(input []byte) (handle []byte, sealed []byte, err error)
// Lock requests that the FDE TA be locked. This will prevent it from being
// used further.
Lock() error
// Version returns the version of the FDE TA.
Version() (int, error)
}
// NewFDETAClient returns a new [FDETAClient].
func NewFDETAClient() FDETAClient {
return newClient()
}
// MockNewFDETAClient mocks the function called by [NewFDETAClient]. Should only
// be used in tests.
func MockNewFDETAClient(c FDETAClient) (restore func()) {
osutil.MustBeTestBinary("can only mock optee client in tests")
return testutil.Mock(&newClient, func() FDETAClient {
return c
})
}
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