A User Centric Security Model for Tamper-Resistant Devices

C.8 Application Binding Protocol - Distributed
241 JCSystem . r e q u e s t O b j e c t D e l e t i o n ( ) ;
242 apdu . setOutgoing ( ) ;
243 apdu . setOutgoingLength ( ( short ) copyPointer ) ;
244 apdu . sendBytesLong ( r e c e i v i n g B u f f e r , ( short ) 0 , ( short )
245 copyPointer ) ;
246 } else i f ( this . r e c e i v i n g B u f f e r [ 3 ] ==
247 this . MessageHandlerTagTwo [ 3 ] ) {
248 i f ( processSecondMsg ( r e c e i v i n g B u f f e r ) ) {
249 return ;
250 } else {
251 ISOException . throwIt ( ( short ) 0xFA17) ;
252 }
253 return ;
254 } else {
255 ISOException . throwIt ( ProtocolHandler .SW_ERROR_INS) ;
256 }
257 JCSystem . r e q u e s t O b j e c t D e l e t i o n ( ) ;
258 }
259 private void generateResponse ( short msgNumber) {
260 short childPM1 = 0 ;
261 short childPM2 = 0 ;
262 copyPointer = 0 ;
263 i f (msgNumber == 1) {
264 copyPointer = U t i l . arrayCopy ( this . ServerAppProtocolInitiatorTag ,
265 ( short ) 0 , this . r e c e i v i n g B u f f e r ,
266 copyPointer , ( short )
267 this . S e r v e r A p p P r o t o c o l I n i t i a t o r T a g . l e n g t h )
268 ;
269 randomDataGen . generateData ( this . ServerAppRandomNumberArray ,
270 this . PTLVDataOffset , ( short ) 16) ;
271 childPM1 = copyPointer ;
272 copyPointer += 2 ;
273 phMacGeneratorKey . setKey ( this . ServerAppRandomNumberArray ,
274 this . PTLVDataOffset ) ;
275 phMacGenerator . i n i t ( phMacGeneratorKey , S i g n a t u r e .MODE_SIGN,
276 I n i t i a l i s a t i o n V e c t o r , ( short ) 0 , ( short )
277 I n i t i a l i s a t i o n V e c t o r . l e n g t h ) ;
278 short l e n g t h = 0 ;
279 l e n g t h = phMacGenerator . s i g n ( ServerAppDHData , ( short )
280 this . PTLVDataOffset , ( short )
281 ( ServerAppDHData . l e n g t h −
282 this . PTLVDataOffset ) ,
283 this . r e c e i v i n g B u f f e r , copyPointer ) ;
284 copyPointer += l e n g t h ;
285 this . shortToBytes ( this . r e c e i v i n g B u f f e r , childPM1 , l e n g t h ) ;
286 return ;
287 } else i f (msgNumber == 2) {
288 this . dhKeyConGen( this . ClientAppDHChanllengerArray ,
this . PTLVDataOffset ,
289 ProtocolHandler .GEN_DHKEY) ;
290 keygenerator ( ) ;
397