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Added padding

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Added plaintext padding and fixed default interface MTU
This commit is contained in:
Mathias Hall-Andersen
2017-07-15 16:27:59 +02:00
parent b21c82e32d
commit dd4da93749
4 changed files with 77 additions and 17 deletions
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src/send.go
+14 -9
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@@ -281,17 +281,22 @@ func (device *Device) RoutineEncryption() {
// populate header fields
func() {
header := work.buffer[:MessageTransportHeaderSize]
header := work.buffer[:MessageTransportHeaderSize]
fieldType := header[0:4]
fieldReceiver := header[4:8]
fieldNonce := header[8:16]
fieldType := header[0:4]
fieldReceiver := header[4:8]
fieldNonce := header[8:16]
binary.LittleEndian.PutUint32(fieldType, MessageTransportType)
binary.LittleEndian.PutUint32(fieldReceiver, work.keyPair.remoteIndex)
binary.LittleEndian.PutUint64(fieldNonce, work.nonce)
}()
binary.LittleEndian.PutUint32(fieldType, MessageTransportType)
binary.LittleEndian.PutUint32(fieldReceiver, work.keyPair.remoteIndex)
binary.LittleEndian.PutUint64(fieldNonce, work.nonce)
// pad content to MTU size
mtu := int(atomic.LoadInt32(&device.mtu))
for i := len(work.packet); i < mtu; i++ {
work.packet = append(work.packet, 0)
}
// encrypt content