A User Centric Security Model for Tamper-Resistant Devices

C.4 Secure and Trusted Channel Protocol Service Provider
C.4.2
Service Provider Implementation
In this section, we detail the SP's implementation of the STCP SP and the helper functions
utlised during the STCP SP are discussed in appendices C.11.1 and C.11.2.
1 package j a v a c a r d t e r m i n a l ;
2
3 import java . math . B i g I n t e g e r ;
4 import java . s e c u r i t y . ∗ ;
5 import java . s e c u r i t y . i n t e r f a c e s . RSAPublicKey ;
6 import java . s e c u r i t y . spec . RSAPublicKeySpec ;
7 import java . u t i l . Arrays ;
8 import javax . crypto . ∗ ;
9 import javax . crypto . spec . SecretKeySpec ;
10 public class ProtocolHandler {
11 private byte [ ] EncryptedDataTag = {
12 ( byte ) 0xFE , ( byte ) 0x01 } ;
13 private byte [ ] MACedDataTag = {
14 ( byte ) 0x5D , ( byte ) 0x01 } ;
15 private byte [ ] MessageHandlerTagOne = {
16 ( byte ) 0xAA, ( byte ) 0xAA} ;
17 private byte [ ] MessageHandlerTagTwo = {
18 ( byte ) 0xBB, ( byte ) 0xBB} ;
19 private byte [ ] PlatformHashPreset = {
20 ( byte ) 0xBF , ( byte ) 0xE5 , ( byte ) 0x45 , ( byte ) 0x86 , ( byte ) 0x2C , ( byte )
21 0xA1 , ( byte ) 0x02 , ( byte ) 0xAD, ( byte ) 0x1E , ( byte ) 0xED, ( byte ) 0xDB,
22 ( byte ) 0x5F , ( byte ) 0xBF , ( byte ) 0xA5 , ( byte ) 0xBF , ( byte ) 0x85 ,
23 ( byte ) 0x5A , ( byte ) 0xC4 , ( byte ) 0x99 , ( byte ) 0x5C , ( byte ) 0x56 ,
24 ( byte ) 0xA8 , ( byte ) 0xB4 , ( byte ) 0x08 , ( byte ) 0xCE, ( byte ) 0x3F ,
25 ( byte ) 0xE0 , ( byte ) 0x99 , ( byte ) 0xDC, ( byte ) 0xE9 , ( byte ) 0x3A ,
26 ( byte ) 0x9D } ;
27 private byte [ ] PlatformHashTag = {
28 ( byte ) 0x5E , ( byte ) 0xAF} ;
29 private byte [ ] PublicExponentTag = {
30 ( byte ) 0xEE , ( byte ) 0x01 } ;
31 private byte [ ] PublicModulusTag = {
32 ( byte ) 0xEE , ( byte ) 0x02 } ;
33 private byte [ ] SCCertificateTag = {
34 ( byte ) 0xF0 , ( byte ) 0x02 } ;
35 private byte [ ] SCDHChallengeTag = {
36 ( byte ) 0x5C , ( byte ) 0x02 } ;
37 private byte [ ] SCIP = {
38 ( byte ) 0xC5 , ( byte ) 0x7D , ( byte ) 0xB1 , ( byte ) 0x7C } ;
39 private byte [ ] SCIdentityTag = {
40 ( byte ) 0x5F , ( byte ) 0x02 } ;
41 private byte [ ] SCRandomNumberTag = {
42 ( byte ) 0x5A , ( byte ) 0x02 } ;
43 private byte [ ] SCUserCertificateTag = {
44 ( byte ) 0xF0 , ( byte ) 0x03
45 }
46 ;
304