A User Centric Security Model for Tamper-Resistant Devices

C.4 Secure and Trusted Channel Protocol Service Provider
98 private PrimitiveTLV PublicExponent = PrimitiveTLV . getPrimitiveTLV
99 ( this . PublicExponentTag ) ;
100 private PrimitiveTLV PlatformHash = PrimitiveTLV . getPrimitiveTLV
101 ( this . PlatformHashTag ) ;
102 public ConstructedTLV MessageHandler =
103 ConstructedTLV . getConstructedTLV ( MessageHandlerTagOne ) ;
104 private PrimitiveTLV MACedData = PrimitiveTLV . getPrimitiveTLV
105 ( this . MACedDataTag) ;
106 private ConstructedTLV EncryptedData =
107 ConstructedTLV . getConstructedTLV ( this . EncryptedDataTag ) ;
108 private P r o t o c o l H e l p e r C l a s s myProtocolHelperObject = new
109 P r o t o c o l H e l p e r C l a s s ( ) ;
110 private byte [ ] mySessionEncryptionKey = new byte [ 1 6 ] ;
111 private byte [ ] mySessionMacKey = new byte [ 1 6 ] ;
112 public ProtocolHandler ( ) {
113 myProtocolHelperObject . p r o t o c o l I n i t i a l i s e ( ) ;
114 RSAPublicKey tempKey = ( RSAPublicKey )
115 myProtocolHelperObject . getPublicKey ( ) ;
116 byte [ ] tempExponent = tempKey . getPublicExponent ( ) . toByteArray ( ) ;
117 this . PublicExponent . i n i t i a l i s a t i o n P T L V ( this . PublicExponentTag ,
118 tempExponent . l e n g t h ) ;
119 this . PublicExponent . setTlvValues ( tempExponent ) ;
120 byte [ ] tempModulus = tempKey . getModulus ( ) . toByteArray ( ) ;
121 this . PublicModulus . i n i t i a l i s a t i o n P T L V ( this . PublicModulusTag ,
122 ( tempModulus . l e n g t h − 1) ) ;
123 this . PublicModulus . setTlvValues ( tempModulus , 1 ,
124 ( tempModulus . l e n g t h − 1) ) ;
125 S P S i g n a t u r e C e r t i f i c a t e . addPTLV( this . PublicExponent ) ;
126 S P S i g n a t u r e C e r t i f i c a t e . addPTLV( this . PublicModulus ) ;
127 }
128 public void i n i t i a l i s e P r o t o c o l ( ) {
129 try {
130 this . SPDHChanllenger . setTlvValues
131 ( this . myProtocolHelperObject . GenerateDHPublicValue ( ) ) ;
132 this . MessageHandler . addPTLV( this . SPDHChanllenger ) ;
133 } catch ( Exception cE ) {
134 System . out . p r i n t l n (
135 " Error ProtocolHandler . i n i t i a l i s e P r o t o c o l Option
= 1 , : " + cE . g e t C l a s s ( ) . getName ( ) ) ;
136 }
137 }
138 public byte [ ] outMessageProcessing ( int Counter ) {
139 i f ( Counter == 1) {
140 try {
141 this . SPRandomNumber . setTlvValues
142 ( this . myProtocolHelperObject . getRandomNumber ( ) ) ;
143 this . MessageHandler . addPTLV( this . SPRandomNumber) ;
144 byte [ ] temp = new byte [ ( this . SCIP . l e n g t h +
145 this . SPDHChanllenger . getValueLength ( )
146 + this . SPRandomNumber . getValueLength ( )
147 ) ] ;
306