sphinx: export GenerateSharedSecret

Author: joostjager

crypto.go

@@ -234,18 +234,18 @@ func chacha20polyDecrypt(key, cipherTxt []byte) ([]byte, error) {
 //
 // TODO(roasbef): rename?
 type sharedSecretGenerator interface {
-	// generateSharedSecret given a public key, generates a shared secret
+	// GenerateSharedSecret given a public key, generates a shared secret
 	// using private data of the underlying sharedSecretGenerator.
-	generateSharedSecret(dhKey *btcec.PublicKey) (Hash256, error)
+	GenerateSharedSecret(dhKey *btcec.PublicKey) (Hash256, error)
 }
 
-// generateSharedSecret generates the shared secret using the given ephemeral
+// GenerateSharedSecret generates the shared secret using the given ephemeral
 // pub key and the Router's private key. If a blindingPoint is provided then it
 // is used to tweak the Router's private key before creating the shared secret
 // with the ephemeral pub key. The blinding point is used to determine our
 // shared secret with the receiver. From that we can determine our shared
 // secret with the sender using the dhKey.
-func (r *Router) generateSharedSecret(dhKey,
+func (r *Router) GenerateSharedSecret(dhKey,
 	blindingPoint *btcec.PublicKey) (Hash256, error) {
 
 	// If no blinding point is provided, then the un-tweaked dhKey can

sphinx.go

@@ -546,7 +546,7 @@ func (r *Router) ProcessOnionPacket(onionPkt *OnionPacket, assocData []byte,
 	}
 
 	// Compute the shared secret for this onion packet.
-	sharedSecret, err := r.generateSharedSecret(
+	sharedSecret, err := r.GenerateSharedSecret(
 		onionPkt.EphemeralKey, cfg.blindingPoint,
 	)
 	if err != nil {
@@ -587,7 +587,7 @@ func (r *Router) ReconstructOnionPacket(onionPkt *OnionPacket, assocData []byte,
 	}
 
 	// Compute the shared secret for this onion packet.
-	sharedSecret, err := r.generateSharedSecret(
+	sharedSecret, err := r.GenerateSharedSecret(
 		onionPkt.EphemeralKey, cfg.blindingPoint,
 	)
 	if err != nil {
@@ -780,7 +780,7 @@ func (t *Tx) ProcessOnionPacket(seqNum uint16, onionPkt *OnionPacket,
 	}
 
 	// Compute the shared secret for this onion packet.
-	sharedSecret, err := t.router.generateSharedSecret(
+	sharedSecret, err := t.router.GenerateSharedSecret(
 		onionPkt.EphemeralKey, cfg.blindingPoint,
 	)
 	if err != nil {