add MacFull3DES function

globalplatform/crypto/crypto.go

@@ -44,6 +44,37 @@ func VerifyCryptogram(encKey, hostChallenge, cardChallenge, cardCryptogram []byt
 	return bytes.Equal(calculated, cardCryptogram), nil
 }
 
+func MacFull3DES(key, data, iv []byte) ([]byte, error) {
+	data = appendDESPadding(data)
+
+	desBlock, err := des.NewCipher(resizeKey8(key))
+	if err != nil {
+		return nil, err
+	}
+
+	des3Block, err := des.NewTripleDESCipher(resizeKey24(key))
+	if err != nil {
+		return nil, err
+	}
+
+	des3IV := iv
+
+	if len(data) > 8 {
+		length := len(data) - 8
+		tmp := make([]byte, length)
+		mode := cipher.NewCBCEncrypter(desBlock, iv)
+		mode.CryptBlocks(tmp, data[:length])
+		des3IV = tmp
+	}
+
+	ciphertext := make([]byte, 8)
+
+	mode := cipher.NewCBCEncrypter(des3Block, des3IV)
+	mode.CryptBlocks(ciphertext, data[len(data)-8:])
+
+	return ciphertext, nil
+}
+
 func mac3des(key, data, iv []byte) ([]byte, error) {
 	key24 := resizeKey24(key)
 
@@ -68,6 +99,10 @@ func resizeKey24(key []byte) []byte {
 	return data
 }
 
+func resizeKey8(key []byte) []byte {
+	return key[:8]
+}
+
 func appendDESPadding(data []byte) []byte {
 	length := len(data) + 1
 	for ; length%8 != 0; length++ {

globalplatform/crypto/crypto_test.go

@@ -52,3 +52,12 @@ func TestMac3des(t *testing.T) {
 	expected := "05C4BB8A86014E22"
 	assert.Equal(t, expected, hexutils.BytesToHex(result))
 }
+
+func TestMacFull3DES(t *testing.T) {
+	key := hexutils.HexToBytes("5b02e75ad63190aece0622936f11abab")
+	data := hexutils.HexToBytes("8482010010810b098a8fbb88da")
+	result, err := MacFull3DES(key, data, nullBytes8)
+	assert.NoError(t, err)
+	expected := "5271D7174A5A166A"
+	assert.Equal(t, expected, hexutils.BytesToHex(result))
+}