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device: uniformly check ECDH output for zeros

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Reported-by: z <dzm@unexpl0.red>
Fixes: 8c34c4c ("First set of code review patches")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld
2023-02-16 15:51:30 +01:00
parent 1e2c3e5a3c
commit c7b76d3d9e
5 changed files with 45 additions and 38 deletions
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2
device/device.go
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@@ -265,7 +265,7 @@ func (device *Device) SetPrivateKey(sk NoisePrivateKey) error {
expiredPeers := make([]*Peer, 0, len(device.peers.keyMap))
for _, peer := range device.peers.keyMap {
handshake := &peer.handshake
handshake.precomputedStaticStatic = device.staticIdentity.privateKey.sharedSecret(handshake.remoteStatic)
handshake.precomputedStaticStatic, _ = device.staticIdentity.privateKey.sharedSecret(handshake.remoteStatic)
expiredPeers = append(expiredPeers, peer)
}