A User Centric Security Model for Tamper-Resistant Devices

C.6 Application Acquisition and Contractual Agreement Protocol
378 this . U s e r I d e n t i t y = pTemp ;
379 }
380 break ;
381 case 0 :
382 cTemp = ( ConstructedTLV )inCTLV . getNext ( ) ;
383 i f ( Arrays . e q u a l s (cTemp . getTagName ( ) ,
384 this . EncryptedData . getTagName ( ) ) ) {
385 this . EncryptedData = cTemp ;
386 } else i f ( Arrays . e q u a l s (cTemp . getTagName ( ) ,
387 S C U s e r C e r t i f i c a t e . getTagName ( ) ) ) {
388 this . S C U s e r C e r t i f i c a t e = cTemp ;
389 } else i f ( Arrays . e q u a l s (cTemp . getTagName ( ) ,
390 S C C e r t i f i c a t e . getTagName ( ) ) ) {
391 this . S C C e r t i f i c a t e = cTemp ;
392 }
393 break ;
394 default :
395 System . out . p r i n t l n ( " Error In Parsing Input Message " ) ;
396 }
397 c h i l d s −−;
398 }
399 } catch ( Exception e ) {
400 System . out . p r i n t l n (
401 " Error i n ProtocolHanlder . ChildExtractionMethod
: " + e . g e t C l a s s ( ) . getName ( ) ) ;
402 }
403 }
404 void GenerateKeys ( byte [ ] i n b u f f ) {
405 byte [ ] DHSecretKey = null ;
406 try {
407 DHSecretKey =
408 this . myProtocolHelperObject . GenerateDHSessionKeyMaterial ( i n b u f f ,
0 ,
409 i n b u f f . l e n g t h ) ;
410 } catch ( Exception cE ) {
411 System . out . p r i n t l n (
412 " Exception At P r o t o c o l H e l p e r C l a s s . GenerateKeys :
" + cE . g e t C l a s s ( ) . getName ( ) ) ;
413 }
414 byte [ ] keyGenKey = new byte [ 1 6 ] ;
415 System . arraycopy ( DHSecretKey , 0 , keyGenKey , 0 , keyGenKey . l e n g t h ) ;
416 byte [ ] macInputValue = new byte [ 6 4 ] ;
417 System . arraycopy ( this . SPRandomNumber . getValueBytes ( ) , 0 ,
macInputValue ,
418 0 , 16) ;
419 System . arraycopy ( this . SCRandomNumber . getValueBytes ( ) , 0 ,
macInputValue ,
420 16 , 16) ;
421 System . arraycopy ( DHSecretKey , 16 , macInputValue , 32 , 16) ;
422 for ( int i = 4 8 ; i < 6 4 ; i ++) {
423 macInputValue [ i ] = ( byte ) 0x02 ;
358