A User Centric Security Model for Tamper-Resistant Devices

C.11 Implementation Helper Classes
144 " m i l l i s e c o n d s to c r e a t e an index f o r the f i l e s i n
the d i r e c t o r y " + f i l e D i r . getPath ( ) ) ;
145 }
146 public s t a t i c int searchIndex ( S t r i n g s e a r c h S t r i n g )throws
147 IOException , ParseException {
148 System . out . p r i n t l n ( " Searching f o r ' " + s e a r c h S t r i n g + " ' " ) ;
149 D i r e c t o r y d i r e c t o r y = FSDirectory . g e t D i r e c t o r y (INDEX_DIRECTORY) ;
150 IndexReader indexReader = IndexReader . open ( d i r e c t o r y ) ;
151 IndexSearcher indexSearcher = new IndexSearcher ( indexReader ) ;
152 Analyzer a n a l y z e r = new StandardAnalyzer ( ) ;
153 QueryParser queryParser = new QueryParser (FIELD_CONTENTS,
154 a n a l y z e r ) ;
155 Query query = queryParser . parse ( s e a r c h S t r i n g ) ;
156 Hits h i t s = indexSearcher . s e a r c h ( query ) ;
157 System . out . p r i n t l n ( "Number o f h i t s : " + h i t s . l e n g t h ( ) ) ;
158 return h i t s . l e n g t h ( ) ;
159 }
160 class CheckStream extends Thread {
161 BufferedReader bufferedReader ;
162 S t r i n g l i n e r e a d = "" ;
163 CheckStream ( InputStream inputStream ) {
164 bufferedReader = new BufferedReader (new InputStreamReader
165 ( inputStream ) ) ;
166 }
167 public void run ( ) {
168 try {
169 F i l e W r i t e r f i l e W r i t e r = new F i l e W r i t e r ( mnemonicOutputFileName )
170 ;
171 while ( ( l i n e r e a d = bufferedReader . readLine ( ) ) != null ) {
172 System . out . p r i n t l n ( l i n e r e a d ) ;
173 f i l e W r i t e r . w r i t e ( l i n e r e a d + "\n" ) ;
174 }
175 f i l e W r i t e r . c l o s e ( ) ;
176 } catch ( IOException i o e ) {
177 System . out . p r i n t l n ( " IOException : " + i o e . getMessage ( ) ) ;
178 }
179 }
180 }
181 }
C.11 Implementation Helper Classes
In this section, we detail the helper classes that we implemented to overcome the limited
capability of our test bed.
C.11.1
Protocol Cryptographic Support
The helper function this section implements the support of cryptographic algorihtms that
an SP, card manufacturer or administrative authority uses during the respective protocol
433