From 7971bc3e0913983b84a6abca1158053d857d6658 Mon Sep 17 00:00:00 2001
From: Andrea Franz <andrea@gravityblast.com>
Date: Tue, 2 Oct 2018 15:52:12 +0200
Subject: [PATCH] fix mac full 3DES iv generation

---
 globalplatform/crypto/crypto.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/globalplatform/crypto/crypto.go b/globalplatform/crypto/crypto.go
index c214487..733fad9 100644
--- a/globalplatform/crypto/crypto.go
+++ b/globalplatform/crypto/crypto.go
@@ -65,7 +65,7 @@ func MacFull3DES(key, data, iv []byte) ([]byte, error) {
 		tmp := make([]byte, length)
 		mode := cipher.NewCBCEncrypter(desBlock, iv)
 		mode.CryptBlocks(tmp, data[:length])
-		des3IV = tmp
+		des3IV = tmp[length-8:]
 	}
 
 	ciphertext := make([]byte, 8)