A User Centric Security Model for Tamper-Resistant Devices

C.5 Secure and Trusted Channel Protocol Smart Card
87 private PublicKey SCUserVerificationKey = null ;
88 private PublicKey SCVerificationKey = null ;
89 public ProtocolHandlerSCIn ( ) {
90 myProtocolHelperObject . p r o t o c o l I n i t i a l i s e ( ) ;
91 RSAPublicKey tempKey = ( RSAPublicKey )
92 myProtocolHelperObject . getPublicKey ( ) ;
93 byte [ ] tempExponent = tempKey . getPublicExponent ( ) . toByteArray ( ) ;
94 this . PublicExponent . i n i t i a l i s a t i o n P T L V ( this . PublicExponentTag ,
95 tempExponent . l e n g t h ) ;
96 this . PublicExponent . setTlvValues ( tempExponent ) ;
97 byte [ ] tempModulus = tempKey . getModulus ( ) . toByteArray ( ) ;
98 this . PublicModulus . i n i t i a l i s a t i o n P T L V ( this . PublicModulusTag ,
99 ( tempModulus . l e n g t h − 1) ) ;
100 this . PublicModulus . setTlvValues ( tempModulus , 1 , ( tempModulus . l e n g t h −
101 1) ) ;
102 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 ) ;
103 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 ) ;
104 }
105 public void i n i t i a l i s e P r o t o c o l ( ) {
106 try {
107 this . SPDHChanllenger . setTlvValues
108 ( this . myProtocolHelperObject . GenerateDHPublicValue ( ) ) ;
109 this . MessageHandler . addPTLV( this . SPDHChanllenger ) ;
110 } catch ( Exception cE ) {
111 System . out . p r i n t l n (
112 " 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 ( ) ) ;
113 }
114 }
115 public byte [ ] outMessageProcessing ( int Counter ) {
116 i f ( Counter == 1) {
117 try {
118 this . SPRandomNumber . setTlvValues
119 ( this . myProtocolHelperObject . getRandomNumber ( ) ) ;
120 this . MessageHandler . addPTLV( this . SPRandomNumber) ;
121 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 ( )
122 . l e n g t h +
123 this . SPDHChanllenger . getValueLength ( ) +
124 this . SPRandomNumber . getValueLength ( ) ) ] ;
125 System . arraycopy ( this . SPDHChanllenger . getValueBytes ( ) , 0 , temp , 0 ,
126 this . SPDHChanllenger . getValueLength ( ) ) ;
127 System . arraycopy ( this . SPRandomNumber . getValueBytes ( ) , 0 , temp ,
128 this . SPDHChanllenger . getValueLength ( ) ,
129 this . SPRandomNumber . getValueLength ( ) ) ;
130 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 ,
131 temp . l e n g t h −
132 this . S C P r o t o c o l I n i t i a t o r . getValueBytes ( ) . length ,
133 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 ) ;
134 byte [ ] r e s u l t = new byte [ 1 6 ] ;
135 this . myProtocolHelperObject . GenerateMac ( temp , 0 , temp . length ,
327