A User Centric Security Model for Tamper-Resistant Devices

C.4 Secure and Trusted Channel Protocol Service Provider
220 ( short ) 0 , this . S C C e r t i f i c a t e ,
( short ) ( i n i t i a l P o i n t e r ) , ( short )
221 this . ModulusTag . l e n g t h ) ;
222 kLen = myPublic . getModulus ( this . S C C e r t i f i c a t e , ( short )
223 ( i n i t i a l P o i n t e r + ( short ) 2) ) ;
224 this . shortToBytes ( this . S C C e r t i f i c a t e , i n i t i a l P o i n t e r , kLen ) ;
225 this . S C C e r t i f i c a t e [6]++;
226 } catch ( Exception cE ) {
227 ISOException . throwIt ( ( short ) 0 x6666 ) ;
228 }
229 }
230 public void p r o c e s s (APDU apdu )throws ISOException {
231 byte [ ] apduBuffer = apdu . g e t B u f f e r ( ) ;
232 i f ( s e l e c t i n g A p p l e t ( ) ) {
233 return ;
234 }
235 i f ( apduBuffer [ ISO7816 .OFFSET_CLA] != CLA) {
236 ISOException . throwIt (SW_CLASSNOTSUPPORTED) ;
237 }
238 i f ( apduBuffer [ ISO7816 .OFFSET_INS] == I n i t i a t i o n P r o t o c o l ) {
239 this . i n i t i a l i s e P r o t o c o l ( ) ;
240 return ;
241 }
242 r e c e i v i n g B u f f e r = null ;
243 b y t e s L e f t = 0 ;
244 b y t e s L e f t = apdu . getIncomingLength ( ) ;
245 r e c e i v i n g B u f f e r = JCSystem . makeTransientByteArray ( bytesLeft ,
246 JCSystem .MEMORY_TYPE_TRANSIENT_DESELECT) ;
247 readCount = ( short ) ( ( short ) apdu . setIncomingAndReceive ( ) ) ;
248 rCount = 0 ;
249 i f ( b y t e s L e f t > 0) {
250 rCount = U t i l . arrayCopyNonAtomic ( apduBuffer ,
251 ISO7816 .OFFSET_EXT_CDATA, r e c e i v i n g B u f f e r , rCount , readCount ) ;
252 b y t e s L e f t −= readCount ;
253 }
254 while ( b y t e s L e f t > 0) {
255 try {
256 readCount = apdu . r e c e i v e B y t e s ( ( short ) 0) ;
257 rCount = U t i l . arrayCopyNonAtomic ( apduBuffer , ( short ) 0 ,
258 r e c e i v i n g B u f f e r , rCount , readCount ) ;
259 b y t e s L e f t −= readCount ;
260 } catch ( Exception aE) {
261 ISOException . throwIt ( ( short ) 0x7AAA) ;
262 }
263 }
264 try {
265 parseMessage ( r e c e i v i n g B u f f e r ) ;
266 } catch ( Exception cE ) {
267 ISOException . throwIt ( ( short ) 0xA112 ) ;
268 }
269 i f ( this . r e c e i v i n g B u f f e r [ 3 ] == this . MessageHandlerTagOne [ 3 ] ) {
295