C.I.E – Carta di Identità Elettronica Functional Specification Version 2.0
CIE - Functional Specification v 2.0
CIE - Functional Specification v 2.0
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11.4.5 SM Response in SM_ENCOriginal APDU response:Response Data Field (R bytes) Status Word (SW1-SW2)• Step 1: Response Data Field is padded and encryptedDataPad<strong>di</strong>ngResponse Data Field (R bytes) ISO 9797 mode 2 (P=1..8 bytes)ENC is the string of (R+P) bytes obtained enciphering the padded data.• Step 2: set up the Cipher Text Object (C_T_O)T L Value87h R+P+1 Pad<strong>di</strong>ng In<strong>di</strong>cator (01h)ENC (R+P bytes)• Step 3: APDU Response in SM_ENCEnciphered ResponseC_T_O (R+P+3 bytes)SWSW1||SW2Example:The terminal wants to read 5 bytes from the card, in SM_ENC. The answer is at least 3 bytes plusthe pad<strong>di</strong>ng plus the net length (Le) of the data, the command sent is: 0Ch B0h 00h 00h 0Bh11.4.6 SM Response in SM_SIGOriginal APDU response:Response Data Field (R bytes) Status Word (SW1-SW2)• Step 1: set up the HEADER BLOCKHeader Block is set up as described in step 1 of SM_SIG mode description.CIE - <strong>Functional</strong> <strong>Specification</strong> v <strong>2.0</strong> -Page 39/76
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