A User Centric Security Model for Tamper-Resistant Devices

C.4 Secure and Trusted Channel Protocol Service Provider
295 temp . length , this . SignedData . getValueBytes ( ) , 0 ,
296 SCVerificationKey ,
297 P r o t o c o l H e l p e r C l a s s .SIGN_MODE_VERIFICATION) ) {}
298 else {
299 System . out . p r i n t l n (
300 " S i g n a t u r e V e r i f i c a t i o n F a i l e d . . . . . . Check
code " ) ;
301 }
302 }
303 } catch ( Exception cE ) {
304 System . out . p r i n t l n (
305 " Error i n ProtocolHandler . inMessageProcessing :
" + cE . g e t C l a s s ( ) . getName ( ) ) ;
306 }
307 return true ;
308 }
309 public s t a t i c S t r i n g byteToString ( byte [ ] inArray ) {
310 byte [ ] HEX_CHAR_TABLE = {
311 ( byte ) ' 0 ' , ( byte ) ' 1 ' , ( byte ) ' 2 ' , ( byte ) ' 3 ' , ( byte ) ' 4 ' , ( byte )
312 ' 5 ' , ( byte ) ' 6 ' , ( byte ) ' 7 ' , ( byte ) ' 8 ' , ( byte ) ' 9 ' , ( byte ) ' a ' ,
313 ( byte ) ' b ' , ( byte ) ' c ' , ( byte ) ' d ' , ( byte ) ' e ' , ( byte ) ' f '
314 } ;
315 byte [ ] hex = new byte [ 2 ∗ inArray . l e n g t h ] ;
316 int index = 0 ;
317 for ( byte b : inArray ) {
318 int v = b & 0xFF ;
319 hex [ index++] = HEX_CHAR_TABLE[ v >>> 4 ] ;
320 hex [ index++] = HEX_CHAR_TABLE[ v & 0xF ] ;
321 }
322 try {
323 return new S t r i n g ( hex , "ASCII" ) ;
324 } catch ( Exception cE ) {
325 System . out . p r i n t l n ( " Exception in bytesToString : " +
326 cE . getMessage ( ) ) ;
327 }
328 return " Error " ;
329 }
330 void childExtractionFromCTLV ( ConstructedTLV inCTLV) {
331 try {
332 int c h i l d s = inCTLV . getChildNumbers ( ) ;
333 PrimitiveTLV pTemp = null ;
334 ConstructedTLV cTemp = null ;
335 while ( c h i l d s > 0) {
336 switch (inCTLV . nextType ( ) ) {
337 case 1 :
338 pTemp = ( PrimitiveTLV )inCTLV . getNext ( ) ;
339 i f ( Arrays . e q u a l s (pTemp . getTagName ( ) ,
340 this . SCDHChallenge . getTagName ( ) ) ) {
341 this . SCDHChallenge = pTemp ;
342 } else i f ( Arrays . e q u a l s (pTemp . getTagName ( ) ,
343 this . SCRandomNumber . getTagName ( ) ) ) {
310