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https://github.com/KusakabeShi/EtherGuard-VPN.git
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50 lines
1019 B
Go
50 lines
1019 B
Go
/* SPDX-License-Identifier: GPL-2.0
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*
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* Copyright (C) 2017-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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*/
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package main
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import (
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"crypto/cipher"
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"sync"
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"time"
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)
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/* Due to limitations in Go and /x/crypto there is currently
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* no way to ensure that key material is securely ereased in memory.
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*
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* Since this may harm the forward secrecy property,
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* we plan to resolve this issue; whenever Go allows us to do so.
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*/
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type KeyPair struct {
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sendNonce uint64
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send cipher.AEAD
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receive cipher.AEAD
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replayFilter ReplayFilter
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isInitiator bool
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created time.Time
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localIndex uint32
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remoteIndex uint32
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}
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type KeyPairs struct {
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mutex sync.RWMutex
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current *KeyPair
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previous *KeyPair
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next *KeyPair // not yet "confirmed by transport"
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}
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func (kp *KeyPairs) Current() *KeyPair {
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kp.mutex.RLock()
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defer kp.mutex.RUnlock()
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return kp.current
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}
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func (device *Device) DeleteKeyPair(key *KeyPair) {
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if key != nil {
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device.indices.Delete(key.localIndex)
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}
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}
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