From 1f5f2a9eeb2e48fe90c5dc1eb694f2825587deb9 Mon Sep 17 00:00:00 2001
From: Andrea Franz <andrea@gravityblast.com>
Date: Wed, 27 Mar 2019 15:16:02 +0100
Subject: [PATCH] add change PUK and Pairing Secret commands

---
 command_set.go | 15 +++++++++++++++
 commands.go    | 20 ++++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/command_set.go b/command_set.go
index cf322f4..70ab302 100644
--- a/command_set.go
+++ b/command_set.go
@@ -195,6 +195,21 @@ func (cs *CommandSet) ChangePIN(pin string) error {
 	return cs.checkOK(resp, err)
 }
 
+func (cs *CommandSet) ChangePUK(puk string) error {
+	cmd := NewCommandChangePUK(puk)
+	resp, err := cs.sc.Send(cmd)
+
+	return cs.checkOK(resp, err)
+}
+
+func (cs *CommandSet) ChangePairingSecret(password string) error {
+	secret := generatePairingToken(password)
+	cmd := NewCommandChangePairingSecret(secret)
+	resp, err := cs.sc.Send(cmd)
+
+	return cs.checkOK(resp, err)
+}
+
 func (cs *CommandSet) GenerateKey() ([]byte, error) {
 	cmd := NewCommandGenerateKey()
 	resp, err := cs.sc.Send(cmd)
diff --git a/commands.go b/commands.go
index b47435e..7118000 100644
--- a/commands.go
+++ b/commands.go
@@ -149,6 +149,26 @@ func NewCommandChangePIN(pin string) *apdu.Command {
 	)
 }
 
+func NewCommandChangePUK(puk string) *apdu.Command {
+	return apdu.NewCommand(
+		globalplatform.ClaGp,
+		InsChangePIN,
+		P1ChangePinPUK,
+		uint8(0),
+		[]byte(puk),
+	)
+}
+
+func NewCommandChangePairingSecret(secret []byte) *apdu.Command {
+	return apdu.NewCommand(
+		globalplatform.ClaGp,
+		InsChangePIN,
+		P1ChangePinPairingSecret,
+		uint8(0),
+		secret,
+	)
+}
+
 func NewCommandDeriveKey(pathStr string) (*apdu.Command, error) {
 	startingPoint, path, err := derivationpath.Decode(pathStr)
 	if err != nil {