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noise: unify zero checking of ecdh

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This commit is contained in:
Jason A. Donenfeld 2020-03-17 23:06:56 -06:00
parent b33219c2cf
commit 4739708ca4
3 changed files with 49 additions and 63 deletions
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9
device/peer.go
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@ -108,7 +108,6 @@ func (device *Device) NewPeer(pk NoisePublicKey) (*Peer, error) {
handshake := &peer.handshake
handshake.mutex.Lock()
handshake.precomputedStaticStatic = device.staticIdentity.privateKey.sharedSecret(pk)
ssIsZero := isZero(handshake.precomputedStaticStatic[:])
handshake.remoteStatic = pk
handshake.mutex.Unlock()
@ -116,13 +115,9 @@ func (device *Device) NewPeer(pk NoisePublicKey) (*Peer, error) {
peer.endpoint = nil
// conditionally add
// add
if !ssIsZero {
device.peers.keyMap[pk] = peer
} else {
return nil, nil
}
device.peers.keyMap[pk] = peer
// start peer