A User Centric Security Model for Tamper-Resistant Devices

C.9 Platform Binding Protocol
119 phSCAKeyPair = new KeyPair ( KeyPair .ALG_RSA,
120 KeyBuilder .LENGTH_RSA_512) ;
121 phUserKeyPair = new KeyPair ( KeyPair .ALG_RSA,
122 KeyBuilder .LENGTH_RSA_512) ;
123 phCipherKey = (AESKey) KeyBuilder . buildKey
124 ( KeyBuilder .TYPE_AES_TRANSIENT_DESELECT,
125 KeyBuilder .LENGTH_AES_128, f a l s e ) ;
126 syCipher = Cipher . g e t I n s t a n c e ( Cipher .ALG_AES_BLOCK_128_CBC_NOPAD,
127 f a l s e ) ;
128 randomDataGen = RandomData . g e t I n s t a n c e
129 (RandomData .ALG_SECURE_RANDOM) ;
130 pkCipher = Cipher . g e t I n s t a n c e ( Cipher .ALG_RSA_NOPAD, f a l s e ) ;
131 d h I n i t i a l i s a t i o n ( ) ;
132 phSCAKeyPair . genKeyPair ( ) ;
133 phUserKeyPair . genKeyPair ( ) ;
134 }
135 public s t a t i c void i n s t a l l ( byte bArray [ ] , short bOffset , byte
136 bLength ) throws ISOException {
137 new ProtocolHandler ( ) . r e g i s t e r ( ) ;
138 }
139 public void i n i t i a l i s e P r o t o c o l ( ) {
140 short i n i t i a l P o i n t e r = 0 ;
141 SCADHData = JCSystem . makeTransientByteArray ( ( short ) ( ( short )
142 this . ClassDH . dhModulus . l e n g t h + PTLVDataOffset ) ,
143 JCSystem .MEMORY_TYPE_TRANSIENT_DESELECT) ;
144 U t i l . arrayCopyNonAtomic ( this . SCADHChalleneTag , ( short )
145 i n i t i a l P o i n t e r , this . SCADHData, ( short ) 0 ,
146 ( short ) this . SCADHChalleneTag . l e n g t h ) ;
147 this . shortToBytes (SCADHData, ( short ) 4 , ( short ) ( ( short )
148 SCADHData . l e n g t h − ( short ) PTLVDataOffset ) ) ;
149 this . dhKeyConGen( this . SCADHData, this . PTLVDataOffset ,
150 ProtocolHandler .GEN_KEYCONTRIBUTION) ;
151 SCBDHChanllengerArray = JCSystem . makeTransientByteArray ( ( short ) (
152 ( short ) this . ClassDH . dhModulus . l e n g t h + this . PTLVDataOffset ) ,
153 JCSystem .MEMORY_TYPE_TRANSIENT_DESELECT) ;
154 SCBRandomNumberArray = JCSystem . makeTransientByteArray ( ( short ) 22 ,
155 JCSystem .MEMORY_TYPE_TRANSIENT_DESELECT) ;
156 SCBCookieArray = JCSystem . makeTransientByteArray ( ( short ) 22 ,
157 JCSystem .MEMORY_TYPE_TRANSIENT_DESELECT) ;
158 SCARandomNumberArray = JCSystem . makeTransientByteArray ( ( short ) 22 ,
159 JCSystem .MEMORY_TYPE_TRANSIENT_DESELECT) ;
160 U t i l . arrayCopyNonAtomic ( this . SCARandomNumberTag , ( short )
161 i n i t i a l P o i n t e r , this . SCARandomNumberArray ,
162 ( short ) i n i t i a l P o i n t e r , ( short )
163 this . SCARandomNumberTag . l e n g t h ) ;
164 this . shortToBytes ( this . SCARandomNumberArray , ( short ) 4 , ( short ) (
165 ( short ) this . SCARandomNumberArray . l e n g t h −
166 ( short ) PTLVDataOffset ) ) ;
167 try {
168 this . SCAUserCertificate = JCSystem . makeTransientByteArray (
169 ( short ) 86 , JCSystem .MEMORY_TYPE_TRANSIENT_DESELECT) ;
407