A User Centric Security Model for Tamper-Resistant Devices

C.5 Secure and Trusted Channel Protocol Smart Card
335 this . S C C e r t i f i c a t e . l e n g t h ) ;
336 this . r e c e i v i n g B u f f e r [ childPM2 ]++;
337 try {
338 this . messageEncryption ( this . r e c e i v i n g B u f f e r , ( short ) ( childPM2 +
339 ( short ) 1) , ( short ) ( copyPointer − ( short )
340 ( childPM2 + ( short ) 1) ) ) ;
341 } catch ( Exception ce ) {
342 ISOException . throwIt ( ( short ) ( copyPointer − ( short ) ( childPM2 +
343 ( short ) 1) ) ) ;
344 }
345 this . shortToBytes ( this . r e c e i v i n g B u f f e r , ( short ) ( childPM2 −
( short ) 2) ,
346 ( short ) ( copyPointer − childPM2 − ( short ) 1) ) ;
347 this . macGenerate ( this . r e c e i v i n g B u f f e r , ( short ) ( childPM2 + ( short ) 1) ,
348 ( short ) ( copyPointer − ( short ) ( childPM2 +
( short ) 1) ) ,
349 S i g n a t u r e .MODE_SIGN) ;
350 this . r e c e i v i n g B u f f e r [ childPM1 ]++;
351 copyPointer = U t i l . arrayCopyNonAtomic ( this . SPCookieArray , ( short ) 0 ,
352 this . r e c e i v i n g B u f f e r , ( short ) copyPointer , ( short )
353 this . SPCookieArray . l e n g t h ) ;
354 this . r e c e i v i n g B u f f e r [ childPM1 ]++;
355 this . shortToBytes ( this . r e c e i v i n g B u f f e r , ( short ) ( childPM1 −
( short ) 2) ,
356 ( short ) ( copyPointer − ( short ) 7) ) ;
357 }
358 }
359 boolean processSecondMsg ( byte [ ] inArray ) {
360 short i n O f f s e t = ( short ) ( this . CTLVDataOffset + this . CTLVDataOffset ) ;
361 short inLength = ( short ) ( ProtocolHandler . bytesToShort ( inArray , ( short )
362 ( i n O f f s e t − ( short ) 3) ) ) ;
363 i f ( this . macGenerate ( inArray , i n O f f s e t , inLength ,
364 S i g n a t u r e .MODE_VERIFY) ) {
365 try {
366 this . phDecryption ( inArray , i n O f f s e t , inLength ) ;
367 i n O f f s e t = ( short ) ( this . CTLVDataOffset + this . PTLVDataOffset +
368 ( short ) 168) ;
369 inLength = 3 ;
370 SPVerificationKey . setExponent ( inArray , i n O f f s e t , inLength ) ;
371 i n O f f s e t += ( short ) ( inLength + this . PTLVDataOffset ) ;
372 inLength = ( short ) 6 4 ;
373 SPVerificationKey . setModulus ( inArray , i n O f f s e t , inLength ) ;
374 i n O f f s e t = ( short ) ( this . CTLVDataOffset + this . CTLVDataOffset ) ;
375 inLength = ( short ) 8 4 ;
376 i f ( this . signGenerate ( inArray , i n O f f s e t , inLength ,
377 SPVerificationKey , S i g n a t u r e .MODE_VERIFY) ) {
378 return true ;
379 } else {
380 ISOException . throwIt ( ( short ) 0 x6666 ) ;
381 }
382 } catch ( Exception ce ) {
320