A User Centric Security Model for Tamper-Resistant Devices

C.6 Application Acquisition and Contractual Agreement Protocol
178 this . myProtocolHelperObject . GenerateMac
179 ( this . EncryptedData . getValueBytes ( ) , 0 ,
180 this . EncryptedData . getValueBytes ( ) . length , temp , 0 ,
181 this . myLongTermMacKey) ;
182 i f ( Arrays . e q u a l s ( this . MACedData . getValueBytes ( ) , temp ) ) {}
183 else {
184 System . out . p r i n t l n (
185 " I n t e g r i t y Check F a i l u r e : ERROR at
ProtocolHandler . inMessageProcessing \n" ) ;
186 System . e x i t ( 0 ) ;
187 }
188 this . myProtocolHelperObject . GenerateDecryption
189 ( this . EncryptedData . getValueBytes ( ) , 0 ,
190 this . EncryptedData . getValueBytes ( ) . length ,
191 this . EncryptedData . getBytesTlvRepresentation ( ) , 7 ,
192 this . myLongTermEncryptionKey ) ;
193 this . childExtractionFromCTLV ( EncryptedData ) ;
194 } catch ( Exception cE ) {
195 System . out . p r i n t l n (
196 " Error i n ProtocolHandler . inMessageProcessing :
" + cE . g e t C l a s s ( ) . getName ( ) ) ;
197 }
198 return true ;
199 }
200 public s t a t i c S t r i n g byteToString ( byte [ ] inArray ) {
201 byte [ ] HEX_CHAR_TABLE = {
202 ( byte ) ' 0 ' , ( byte ) ' 1 ' , ( byte ) ' 2 ' , ( byte ) ' 3 ' , ( byte ) ' 4 ' , ( byte )
203 ' 5 ' , ( byte ) ' 6 ' , ( byte ) ' 7 ' , ( byte ) ' 8 ' , ( byte ) ' 9 ' , ( byte ) ' a ' ,
204 ( byte ) ' b ' , ( byte ) ' c ' , ( byte ) ' d ' , ( byte ) ' e ' , ( byte ) ' f '
205 } ;
206 byte [ ] hex = new byte [ 2 ∗ inArray . l e n g t h ] ;
207 int index = 0 ;
208 for ( byte b : inArray ) {
209 int v = b & 0xFF ;
210 hex [ index++] = HEX_CHAR_TABLE[ v >>> 4 ] ;
211 hex [ index++] = HEX_CHAR_TABLE[ v & 0xF ] ;
212 }
213 try {
214 return new S t r i n g ( hex , "ASCII" ) ;
215 } catch ( Exception cE ) {
216 System . out . p r i n t l n ( " Exception in bytesToString : " +
217 cE . getMessage ( ) + "\n" + cE . getStackTrace ( )
218 . t o S t r i n g ( ) ) ;
219 }
220 return " Error " ;
221 }
222 void childExtractionFromCTLV ( ConstructedTLV inCTLV) {
223 try {
224 int c h i l d s = inCTLV . getChildNumbers ( ) ;
225 PrimitiveTLV pTemp = null ;
226 ConstructedTLV cTemp = null ;
363