A User Centric Security Model for Tamper-Resistant Devices

C.4 Secure and Trusted Channel Protocol Service Provider
422 this . macGenerate ( r e c e i v i n g B u f f e r , ( short ) ( encryptedChildPointer
423 + ( short ) 1) , ( short ) ( copyPointer −
424 ( encryptedChildPointer + ( short ) 1) ) ,
425 S i g n a t u r e .MODE_SIGN) ;
426 this . r e c e i v i n g B u f f e r [ mainChildPointer ]++;
427 copyPointer = U t i l . arrayCopyNonAtomic ( this . SPCookieArray ,
428 ( short ) 0 , this . r e c e i v i n g B u f f e r , copyPointer , ( short )
429 this . SPCookieArray . l e n g t h ) ;
430 this . r e c e i v i n g B u f f e r [ mainChildPointer ]++;
431 this . shortToBytes ( this . r e c e i v i n g B u f f e r , mainLengthPointer ,
432 ( short ) ( copyPointer − ( short ) 7) ) ;
433 }
434 }
435 void platformHashGeneration (byte [ ] inArray , short i n O f f s e t ) {}
436 void processSecondMsg ( byte [ ] inArray ) {
437 short i n O f f s e t = ( short ) ( this . CTLVDataOffset +
438 this . CTLVDataOffset ) ;
439 short inLength = ( short ) ( ProtocolHandler . bytesToShort ( inArray ,
440 ( short ) ( i n O f f s e t − ( short ) 3) ) ) ;
441 i f ( this . macGenerate ( inArray , i n O f f s e t , inLength ,
442 S i g n a t u r e .MODE_VERIFY) ) {
443 this . phDecryption ( inArray , i n O f f s e t , inLength ) ;
444 U t i l . arrayCopyNonAtomic ( inArray , i n O f f s e t , this . SPIdentity ,
445 ( short ) 0 , ( short ) this . SPIdentity . l e n g t h )
446 ;
447 i n O f f s e t += ( short ) 1 5 1 ;
448 inLength = ( short ) 3 ;
449 SPVerificationKey . setExponent ( inArray , i n O f f s e t , inLength ) ;
450 i n O f f s e t += ( short ) ( inLength + this . PTLVDataOffset ) ;
451 inLength = ( short ) 6 4 ;
452 SPVerificationKey . setModulus ( inArray , i n O f f s e t , inLength ) ;
453 i n O f f s e t = ( short ) ( this . CTLVDataOffset + this . CTLVDataOffset ) ;
454 inLength = ( short ) 6 8 ;
455 i f ( this . signGenerate ( inArray , i n O f f s e t , inLength ,
456 SPVerificationKey , S i g n a t u r e .MODE_VERIFY) ) {
457 return ;
458 } else {
459 ISOException . throwIt ( ( short ) 0 x6666 ) ;
460 }
461 } else {
462 ISOException . throwIt ( ( short ) 0xFA18) ;
463 }
464 }
465 void parseMessage ( byte [ ] i n B u f f e r ) {
466 byte c h i l d L e f t = i n B u f f e r [ ( short ) ( this . CTLVDataOffset − ( short ) 1)
467 ] ;
468 short p o i n t e r = ( short ) this . CTLVDataOffset ;
469 try {
470 while ( c h i l d L e f t > 0) {
471 i f ( U t i l . arrayCompare ( SPDHChallengeTag , ( short ) 0 , i n B u f f e r ,
472 pointer , ( short ) 4) == 0) {
299