I have a NXP JCOP java card , that it is written in its Security Target that it is supporting DES cryptography algorithms as follow :
FCS_COP.1.1/ DESMAC
The TSF shall perform [assignment: 8 byte MAC generation and verification] in accordance with a specified cryptographic algorithm [assignment: Triple-DES in outer CBC MAC Mode without padding or with padding method 1 or method 2] and cryptographic key sizes [assignment: 112, 168 Bit] that meet the following: [assignment: : ISO9797-1 MAC Algorithm 1 without Padding; MAC Algorithm 1 with padding Method 1 or Method 2; MAC Algorithm 3 with padding Method 1 or Method 2 [24] ].
Take a deeper look at the last 2 lines, that says my card is support
ISO9797-1 MAC Algorithm 1 without Padding; MAC Algorithm 1 with padding Method 1 or Method 2; MAC Algorithm 3 with padding Method 1 or Method 2 [24] ].
I want to check if the card is really support this algorithms or not.So I tried to write a program that uses the methods of these algorithms.I take a look at Java Card 3.0.1 API specifications (My card is capable with this version), But I can't find any method that explicitly indicate that it is for Algorithm 1 or Algorithm 3 ! It is just mentioned that it is for DES MAC generation algorithm :
static byte ALG_DES_MAC4_ISO9797_1_M2_ALG3
static byte ALG_DES_MAC4_ISO9797_M1
static byte ALG_DES_MAC4_ISO9797_M2
static byte ALG_DES_MAC4_NOPAD
static byte ALG_DES_MAC4_PKCS5
static byte ALG_DES_MAC8_ISO9797_1_M2_ALG3
static byte ALG_DES_MAC8_ISO9797_M1
static byte ALG_DES_MAC8_ISO9797_M2
static byte ALG_DES_MAC8_NOPAD
static byte ALG_DES_MAC8_PKCS5 236
How can I recognize with algorithm (Algorithm 1 or Algorithm 3) does my card support? (The algorithms that it mentioned in its security target.)
Aucun commentaire:
Enregistrer un commentaire