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-rw-r--r--whisper/message.go5
1 files changed, 5 insertions, 0 deletions
diff --git a/whisper/message.go b/whisper/message.go
index 0513627b4..07c673567 100644
--- a/whisper/message.go
+++ b/whisper/message.go
@@ -94,6 +94,11 @@ func (self *Message) sign(key *ecdsa.PrivateKey) (err error) {
func (self *Message) Recover() *ecdsa.PublicKey {
defer func() { recover() }() // in case of invalid signature
+ // Short circuit if no signature is present
+ if self.Signature == nil {
+ return nil
+ }
+ // Otherwise try and recover the signature
pub, err := crypto.SigToPub(self.hash(), self.Signature)
if err != nil {
glog.V(logger.Error).Infof("Could not get public key from signature: %v", err)