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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device
import (
"crypto/cipher"
"sync"
"sync/atomic"
"time"
"golang.zx2c4.com/wireguard/replay"
)
/* Due to limitations in Go and /x/crypto there is currently
* no way to ensure that key material is securely ereased in memory.
*
* Since this may harm the forward secrecy property,
* we plan to resolve this issue; whenever Go allows us to do so.
*/
type Keypair struct {
sendNonce atomic.Uint64
send cipher.AEAD
receive cipher.AEAD
replayFilter replay.Filter
isInitiator bool
created time.Time
localIndex uint32
remoteIndex uint32
}
type Keypairs struct {
sync.RWMutex
current *Keypair
previous *Keypair
next atomic.Pointer[Keypair]
}
func (kp *Keypairs) Current() *Keypair {
kp.RLock()
defer kp.RUnlock()
return kp.current
}
func (device *Device) DeleteKeypair(key *Keypair) {
if key != nil {
device.indexTable.Delete(key.localIndex)
}
}
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