A User Centric Security Model for Tamper-Resistant Devices

C.3 Attestation Protocol
312 inLength = 3 ;
313 CMVerificationKey . setExponent ( inArray , i n O f f s e t , inLength ) ;
314 i n O f f s e t += ( short ) ( inLength + this . PTLVDataOffset ) ;
315 inLength = ( short ) 6 4 ;
316 CMVerificationKey . setModulus ( inArray , i n O f f s e t , inLength ) ;
317 i n O f f s e t = ( short ) ( this . CTLVDataOffset + this . CTLVDataOffset ) ;
318 inLength = ( short ) 8 4 ;
319 i f ( this . signGenerate ( inArray , i n O f f s e t , inLength ,
320 CMVerificationKey , S i g n a t u r e .MODE_VERIFY) ) {
321 return true ;
322 } else {
323 ISOException . throwIt ( ( short ) 0 x6666 ) ;
324 }
325 } catch ( Exception ce ) {
326 ISOException . throwIt ( ( short ) 0xAB23) ;
327 }
328 return true ;
329 } else {
330 ISOException . throwIt ( ( short ) 0xFA18) ;
331 }
332 return f a l s e ;
333 }
334 void parseMessage ( byte [ ] i n B u f f e r ) {
335 byte c h i l d L e f t = i n B u f f e r [ ( short ) ( this . CTLVDataOffset − ( short ) 1) ] ;
336 short p o i n t e r = ( short ) this . CTLVDataOffset ;
337 try {
338 while ( c h i l d L e f t > 0) {
339 i f ( U t i l . arrayCompare ( CMDHChallengeTag , ( short ) 0 , i n B u f f e r ,
340 pointer , ( short ) 4) == 0) {
341 U t i l . arrayCopy ( i n B u f f e r , pointer , this . CMDHChanllengerArray ,
342 ( short ) 0 ,
( short ) this . CMDHChanllengerArray . l e n g t h )
343 ;
344 p o i n t e r += ( short ) this . CMDHChanllengerArray . l e n g t h ;
345 } else i f ( U t i l . arrayCompare ( this . CMRandomNumberTag, ( short ) 0 ,
346 i n B u f f e r , pointer , ( short ) 4) == 0) {
347 U t i l . arrayCopyNonAtomic ( i n B u f f e r , pointer ,
348 this . CMRandomNumberArray , ( short ) 0 ,
349 ( short ) ( this . CMRandomNumberArray . l e n g t h ) )
350 ;
351 p o i n t e r += ( short ) ( this . CMRandomNumberArray . l e n g t h ) ;
352 } else i f ( U t i l . arrayCompare ( this . CMCookieTag , ( short ) 0 , i n B u f f e r ,
353 pointer , ( short ) 4) == 0) {
354 U t i l . arrayCopyNonAtomic ( i n B u f f e r , pointer , this . CMCookieArray ,
355 ( short ) 0 , ( short )
356 ( this . CMCookieArray . l e n g t h ) ) ;
357 p o i n t e r += ( short ) ( this . CMCookieArray . l e n g t h ) ;
358 }
359 c h i l d L e f t −= ( short ) 1 ;
360 }
361 } catch ( Exception cE ) {
279