A User Centric Security Model for Tamper-Resistant Devices

C.9 Platform Binding Protocol
221 i n i t i a l P o i n t e r = U t i l . arrayCopyNonAtomic ( this . ModulusTag ,
222 ( short ) 0 , this . SCACertificate , ( short ) ( i n i t i a l P o i n t e r ) ,
223 ( short ) this . ModulusTag . l e n g t h ) ;
224 kLen = myPublic . getModulus ( this . SCACertificate , ( short )
225 ( i n i t i a l P o i n t e r + ( short ) 2) ) ;
226 this . shortToBytes ( this . SCACertificate , i n i t i a l P o i n t e r , kLen ) ;
227 this . SCACertificate [6]++;
228 } catch ( Exception cE ) {
229 ISOException . throwIt ( ( short ) 0 x6666 ) ;
230 }
231 }
232 public void p r o c e s s (APDU apdu )throws ISOException {
233 byte [ ] apduBuffer = apdu . g e t B u f f e r ( ) ;
234 i f ( s e l e c t i n g A p p l e t ( ) ) {
235 return ;
236 }
237 i f ( apduBuffer [ ISO7816 .OFFSET_CLA] != CLA) {
238 ISOException . throwIt (SW_CLASSNOTSUPPORTED) ;
239 }
240 i f ( apduBuffer [ ISO7816 .OFFSET_INS] == I n i t i a t i o n P r o t o c o l ) {
241 this . i n i t i a l i s e P r o t o c o l ( ) ;
242 return ;
243 }
244 r e c e i v i n g B u f f e r = null ;
245 b y t e s L e f t = 0 ;
246 b y t e s L e f t = apdu . getIncomingLength ( ) ;
247 r e c e i v i n g B u f f e r = JCSystem . makeTransientByteArray ( bytesLeft ,
248 JCSystem .MEMORY_TYPE_TRANSIENT_DESELECT) ;
249 readCount = ( short ) ( ( short ) apdu . setIncomingAndReceive ( ) ) ;
250 rCount = 0 ;
251 i f ( b y t e s L e f t > 0) {
252 rCount = U t i l . arrayCopyNonAtomic ( apduBuffer ,
253 ISO7816 .OFFSET_EXT_CDATA, r e c e i v i n g B u f f e r , rCount , readCount ) ;
254 b y t e s L e f t −= readCount ;
255 }
256 while ( b y t e s L e f t > 0) {
257 try {
258 readCount = apdu . r e c e i v e B y t e s ( ( short ) 0) ;
259 rCount = U t i l . arrayCopyNonAtomic ( apduBuffer , ( short ) 0 ,
260 r e c e i v i n g B u f f e r , rCount , readCount ) ;
261 b y t e s L e f t −= readCount ;
262 } catch ( Exception aE) {
263 ISOException . throwIt ( ( short ) 0x7AAA) ;
264 }
265 }
266 try {
267 parseMessage ( r e c e i v i n g B u f f e r ) ;
268 } catch ( Exception cE ) {
269 ISOException . throwIt ( ( short ) 0xA112 ) ;
270 }
271 i f ( this . r e c e i v i n g B u f f e r [ 3 ] == this . MessageHandlerTagOne [ 3 ] ) {
409