A User Centric Security Model for Tamper-Resistant Devices

C.5 Secure and Trusted Channel Protocol Smart Card
233 temp . length , this . SignedData . getValueBytes ( ) , 0 ,
234 SCVerificationKey ,
P r o t o c o l H e l p e r C l a s s .SIGN_MODE_VERIFICATION) )
235 {}
236 else {
237 System . out . p r i n t l n (
238 " 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 " ) ;
239 }
240 }
241 } catch ( Exception cE ) {
242 System . out . p r i n t l n ( " Error i n ProtocolHandler . inMessageProcessing : "
243 + cE . g e t C l a s s ( ) . getName ( ) ) ;
244 }
245 return true ;
246 }
247 public s t a t i c S t r i n g byteToString ( byte [ ] inArray ) {
248 byte [ ] HEX_CHAR_TABLE = {
249 ( byte ) ' 0 ' , ( byte ) ' 1 ' , ( byte ) ' 2 ' , ( byte ) ' 3 ' , ( byte ) ' 4 ' , ( byte ) ' 5 ' ,
250 ( byte ) ' 6 ' , ( byte ) ' 7 ' , ( byte ) ' 8 ' , ( byte ) ' 9 ' , ( byte ) ' a ' , ( byte ) ' b ' ,
251 ( byte ) ' c ' , ( byte ) ' d ' , ( byte ) ' e ' , ( byte ) ' f '
252 } ;
253 byte [ ] hex = new byte [ 2 ∗ inArray . l e n g t h ] ;
254 int index = 0 ;
255 for ( byte b : inArray ) {
256 int v = b & 0xFF ;
257 hex [ index++] = HEX_CHAR_TABLE[ v >>> 4 ] ;
258 hex [ index++] = HEX_CHAR_TABLE[ v & 0xF ] ;
259 }
260 try {
261 return new S t r i n g ( hex , "ASCII" ) ;
262 } catch ( Exception cE ) {
263 System . out . p r i n t l n ( " Exception in bytesToString : " +
cE . getMessage ( ) )
264 ;
265 }
266 return " Error " ;
267 }
268 void childExtractionFromCTLV ( ConstructedTLV inCTLV) {
269 try {
270 int c h i l d s = inCTLV . getChildNumbers ( ) ;
271 PrimitiveTLV pTemp = null ;
272 ConstructedTLV cTemp = null ;
273 while ( c h i l d s > 0) {
274 switch (inCTLV . nextType ( ) ) {
275 case 1 :
276 pTemp = ( PrimitiveTLV )inCTLV . getNext ( ) ;
277 i f ( Arrays . e q u a l s (pTemp . getTagName ( ) ,
278 this . SCDHChallenge . getTagName ( ) ) ) {
279 this . SCDHChallenge = pTemp ;
280 } else i f ( Arrays . e q u a l s (pTemp . getTagName ( ) ,
330