A User Centric Security Model for Tamper-Resistant Devices

C.5 Secure and Trusted Channel Protocol Smart Card
529 } catch ( Exception ce ) {
530 ISOException . throwIt ( ( short ) 0 x0987 ) ;
531 }
532 return true ;
533 } else i f (macMode == S i g n a t u r e .MODE_VERIFY) {
534 try {
535 phMacGenerator . i n i t ( phMacGeneratorKey , S i g n a t u r e .MODE_VERIFY,
536 I n i t i a l i s a t i o n V e c t o r , ( short ) 0 , ( short )
537 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 ) ;
538 return phMacGenerator . v e r i f y ( this . r e c e i v i n g B u f f e r , i n b u f f O f f s e t ,
539 inbuffLength , i n b u f f , ( short )
540 ( i n b u f f O f f s e t + inbuffLength +
541 this . PTLVDataOffset ) , ( short ) 16) ;
542 } catch ( Exception cE ) {
543 ISOException . throwIt ( ( short ) 0xC1C2) ;
544 }
545 }
546 return f a l s e ;
547 }
548 boolean signGenerate ( byte [ ] i n b u f f , short i n b u f f O f f s e t , short
549 i n b u f f l e n g t h , Key kpSign , short signMode ) {
550 i f ( signMode == S i g n a t u r e .MODE_SIGN) {
551 copyPointer = U t i l . arrayCopyNonAtomic ( this . SignedDataTag , ( short ) 0 ,
552 this . r e c e i v i n g B u f f e r , copyPointer , ( short )
553 this . SignedDataTag . l e n g t h ) ;
554 copyPointer += ( short ) 2 ;
555 phSign . i n i t ( ( RSAPrivateKey ) kpSign , S i g n a t u r e .MODE_SIGN) ;
556 s i g n l e n g t h = phSign . s i g n ( i n b u f f , ( short ) i n b u f f O f f s e t , i n b u f f l e n g t h ,
557 i n b u f f , copyPointer ) ;
558 this . shortToBytes ( this . r e c e i v i n g B u f f e r , ( short ) ( copyPointer −
( short )
559 2) , s i g n l e n g t h ) ;
560 copyPointer += s i g n l e n g t h ;
561 return true ;
562 } else i f ( signMode == S i g n a t u r e .MODE_VERIFY) {
563 phSign . i n i t ( ( RSAPublicKey ) kpSign , S i g n a t u r e .MODE_VERIFY) ;
564 return phSign . v e r i f y ( i n b u f f , i n b u f f O f f s e t , i n b u f f l e n g t h , i n b u f f ,
565 ( short ) ( i n b u f f O f f s e t + i n b u f f l e n g t h +
566 this . PTLVDataOffset ) , ( short ) 64) ;
567 }
568 return f a l s e ;
569 }
570 public s t a t i c short bytesToShort ( byte [ ] ArrayBytes ) {
571 return ( short ) ( ( ( ArrayBytes [ 0 ]