A User Centric Security Model for Tamper-Resistant Devices

C.3 Attestation Protocol
107 this . PublicExponent . setTlvValues ( tempExponent ) ;
108 byte [ ] tempModulus = tempKey . getModulus ( ) . toByteArray ( ) ;
109 this . PublicModulus . i n i t i a l i s a t i o n P T L V ( this . PublicModulusTag ,
110 ( tempModulus . l e n g t h − 1) ) ;
111 this . PublicModulus . setTlvValues ( tempModulus , 1 , ( tempModulus . l e n g t h −
112 1) ) ;
113 CMSignatureCertificate . addPTLV( this . PublicExponent ) ;
114 CMSignatureCertificate . addPTLV( this . PublicModulus ) ;
115 }
116 public byte [ ] outMessageProcessing ( int Counter ) {
117 i f ( Counter == 1) {
118 try {
119 this . CMRandomNumber . setTlvValues
120 ( this . myProtocolHelperObject . getRandomNumber ( ) ) ;
121 this . MessageHandler . addPTLV( this . CMRandomNumber) ;
122 byte [ ] temp = new byte [ ( this . S C P r o t o c o l I n i t i a t o r . getValueBytes ( )
123 . l e n g t h +
124 this . CMRandomNumber . getValueLength ( ) ) ] ;
125 System . arraycopy ( this . CMRandomNumber . getValueBytes ( ) , 0 , temp ,
126 0 , this . CMRandomNumber . getValueLength ( ) ) ;
127 System . arraycopy ( this . S C P r o t o c o l I n i t i a t o r . getValueBytes ( ) , 0 ,
temp ,
128 temp . l e n g t h −
129 this . S C P r o t o c o l I n i t i a t o r . getValueBytes ( ) . length ,
130 this . S C P r o t o c o l I n i t i a t o r . getValueBytes ( ) . l e n g t h ) ;
131 byte [ ] r e s u l t = new byte [ 1 6 ] ;
132 this . myProtocolHelperObject . GenerateMac ( temp , 0 , temp . length ,
133 r e s u l t , 0 , this . myProtocolHelperObject . myLongTermMacKey) ;
134 this . CMCookie . setTlvValues ( r e s u l t ) ;
135 this . MessageHandler . addPTLV( this . CMCookie ) ;
136 } catch ( Exception cE ) {
137 System . out . p r i n t l n (
138 " Error ProtocolHandler . inMessageProcessing
Option = 1 , : " + cE . g e t C l a s s ( ) . getName ( ) ) ;
139 }
140 } else i f ( Counter == 2) {
141 try {
142 this . EncryptedData . i n i t i a l i s a t i o n C T L V ( this . EncryptedDataTag ) ;
143 this . EncryptedData . addPTLV( this . CMIdentityTLV ) ;
144 this . EncryptedData . addPTLV( this . SCIdentity ) ;
145 this . EncryptedData . addPTLV( this . CMRandomNumber) ;
146 this . EncryptedData . addPTLV( this . SCRandomNumber) ;
147 this . myProtocolHelperObject . SignatureMethod
148 ( this . EncryptedData . getValueBytes ( ) , 0 ,
149 this . EncryptedData . getValueBytes ( ) . length ,
150 this . SignedData . getBytesTlvRepresentation ( ) , 6 , null ,
151 P r o t o c o l H e l p e r C l a s s .SIGN_MODE_GENERATION) ;
152 this . EncryptedData . addPTLV( this . SignedData ) ;
153 this . EncryptedData . addCTLV( this . CMSignatureCertificate ) ;
154 this . myProtocolHelperObject . GenerateEncryption
155 ( this . EncryptedData . getValueBytes ( ) , 0 ,
285