A User Centric Security Model for Tamper-Resistant Devices

C.9 Platform Binding Protocol
272 r e c e i v i n g B u f f e r = JCSystem . makeTransientByteArray ( ( short ) 568 ,
273 JCSystem .MEMORY_TYPE_TRANSIENT_DESELECT) ;
274 generateResponse ( ( short ) 1) ;
275 } else i f ( this . r e c e i v i n g B u f f e r [ 3 ] ==
276 this . MessageHandlerTagTwo [ 3 ] ) {
277 processSecondMsg ( r e c e i v i n g B u f f e r ) ;
278 r e c e i v i n g B u f f e r = JCSystem . makeTransientByteArray ( ( short ) 568 ,
279 JCSystem .MEMORY_TYPE_TRANSIENT_DESELECT) ;
280 generateResponse ( ( short ) 2) ;
281 } else {
282 ISOException . throwIt ( ProtocolHandler .SW_ERROR_INS) ;
283 }
284 JCSystem . r e q u e s t O b j e c t D e l e t i o n ( ) ;
285 apdu . setOutgoing ( ) ;
286 apdu . setOutgoingLength ( ( short ) copyPointer ) ;
287 apdu . sendBytesLong ( r e c e i v i n g B u f f e r , ( short ) 0 , ( short ) copyPointer ) ;
288 JCSystem . r e q u e s t O b j e c t D e l e t i o n ( ) ;
289 }
290 private void generateResponse ( short msgNumber) {
291 short c h i l d P o i n t e r M e s s a g e = 6 ;
292 short e n c r y p t i o n O f f s e t = 0 ;
293 copyPointer = 0 ;
294 i f (msgNumber == 1) {
295 randomDataGen . generateData ( this . SCARandomNumberArray ,
296 this . PTLVDataOffset , ( short ) 16) ;
297 this . dhKeyConGen( this . SCBDHChanllengerArray ,
298 this . PTLVDataOffset , ProtocolHandler .GEN_DHKEY)
299 ;
300 copyPointer = U t i l . arrayCopyNonAtomic ( this . MessageHandlerTagOne ,
301 ( short ) 0 , this . r e c e i v i n g B u f f e r , copyPointer , ( short )
302 this . MessageHandlerTagOne . l e n g t h ) ;
303 copyPointer = U t i l . arrayCopyNonAtomic ( this . SCADHData, ( short ) 0 ,
304 this . r e c e i v i n g B u f f e r , copyPointer , ( short )
305 this . SCADHData . l e n g t h ) ;
306 this . r e c e i v i n g B u f f e r [ c h i l d P o i n t e r M e s s a g e ]++;
307 copyPointer = U t i l . arrayCopyNonAtomic ( this . SCARandomNumberArray ,
308 ( short ) 0 , this . r e c e i v i n g B u f f e r , copyPointer , ( short )
309 this . SCARandomNumberArray . l e n g t h ) ;
310 this . r e c e i v i n g B u f f e r [ c h i l d P o i n t e r M e s s a g e ]++;
311 keygenerator ( ) ;
312 copyPointer = U t i l . arrayCopyNonAtomic ( this . EncryptedDataTag ,
313 ( short ) 0 , this . r e c e i v i n g B u f f e r , copyPointer , ( short )
314 this . EncryptedDataTag . l e n g t h ) ;
315 this . r e c e i v i n g B u f f e r [ c h i l d P o i n t e r M e s s a g e ]++;
316 short childEnMessage = ( short ) ( copyPointer + ( short ) 2) ;
317 copyPointer += ( short ) 3 ;
318 e n c r y p t i o n O f f s e t = copyPointer ;
319 copyPointer = U t i l . arrayCopyNonAtomic ( this . SCAIdentityTag ,
320 ( short ) 0 , this . r e c e i v i n g B u f f e r , copyPointer , ( short )
321 this . SCAIdentityTag . l e n g t h ) ;
322 this . r e c e i v i n g B u f f e r [ childEnMessage ]++;
410