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test/sm: implement f4

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This commit is contained in:
Matthias Ringwald 2016-05-05 22:23:08 +02:00
parent 95b381582c
commit 3f94ad52b8
1 changed files with 41 additions and 7 deletions
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48
test/security_manager/aes_cmac_test.c
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@ -4,6 +4,7 @@
#include <string.h>
typedef uint8_t sm_key_t[16];
typedef uint8_t sm_key256_t[32];
static const char * key_string = "2b7e1516 28aed2a6 abf71588 09cf4f3c";
static const char * k0_string = "7df76b0c 1ab899b3 3e42f047 b91b546f";
@ -12,16 +13,19 @@ static const char * k2_string = "f7ddac30 6ae266cc f90bc11e e46d513b";
static const char * m0_string = "";
static const char * cmac_m0_string = "bb1d6929 e9593728 7fa37d12 9b756746";
static const char * m16_string = "6bc1bee2 2e409f96 e93d7e11 7393172a";
static const char * cmac_m16_string = "070a16b4 6b4d4144 f79bdd9d d04a287c";
static const char * m40_string = "6bc1bee2 2e409f96 e93d7e11 7393172a ae2d8a57 1e03ac9c 9eb76fac 45af8e51 30c81c46 a35ce411";
static const char * cmac_m40_string = "dfa66747 de9ae630 30ca3261 1497c827";
static const char * m64_string = "6bc1bee2 2e409f96 e93d7e11 7393172a ae2d8a57 1e03ac9c 9eb76fac 45af8e51 30c81c46 a35ce411 e5fbc119 1a0a52ef f69f2445 df4f9b17 ad2b417b e66c3710";
static const char * cmac_m64_string = "51f0bebf 7e3b9d92 fc497417 79363cfe";
// f4
static const char * f4_u_string = "20b003d2 f297be2c 5e2c83a7 e9f9a5b9 eff49111 acf4fddb cc030148 0e359de6";
static const char * f4_v_string = "55188b3d 32f6bb9a 900afcfb eed4e72a 59cb9ac2 f19d7cfb 6b4fdd49 f47fc5fd";
static const char * f4_x_string = "d5cb8454 d177733e ffffb2ec 712baeab";
static const char * f4_z_string = "00";
static const char * f4_cmac_string = "f2c916f1 07a9bd1c f1eda1be a974872d";
static int nibble_for_char(char c){
if (c >= '0' && c <= '9') return c - '0';
@ -88,10 +92,9 @@ static void calc_subkeys(sm_key_t k0, sm_key_t k1, sm_key_t k2){
#define VALIDATE_KEY(NAME) { LOG_KEY(NAME); sm_key_t test; parse_hex(test, NAME##_string); if (memcmp(NAME, test, 16)){ printf("Error calculating key\n"); } }
#define VALIDATE_MESSAGE(NAME) validate_message(#NAME, NAME##_string, cmac_##NAME##_string)
static void aes_cmac(sm_key_t aes_cmac, uint8_t * data, int sm_cmac_message_len){
sm_key_t key, k0, k1, k2, zero;
static void aes_cmac(sm_key_t aes_cmac, sm_key_t key, uint8_t * data, int sm_cmac_message_len){
sm_key_t k0, k1, k2, zero;
memset(zero, 0, 16);
parse_hex(key, key_string);
aes128_calc_cyphertext(key, zero, k0);
calc_subkeys(k0, k1, k2);
@ -149,6 +152,15 @@ static void aes_cmac(sm_key_t aes_cmac, uint8_t * data, int sm_cmac_message_len)
aes128_calc_cyphertext(key, sm_cmac_y, aes_cmac);
}
static void f4(sm_key_t res, sm_key256_t u, sm_key256_t v, sm_key_t x, uint8_t z){
uint8_t buffer[65];
memcpy(buffer, u, 32);
memcpy(buffer+32, v, 32);
buffer[64] = z;
hexdump2(buffer, sizeof(buffer));
aes_cmac(res, x, buffer, sizeof(buffer));
}
static void validate_message(const char * name, const char * message_string, const char * cmac_string){
uint8_t m[128];
@ -159,8 +171,11 @@ static void validate_message(const char * name, const char * message_string, con
printf("-- verify message %s, len %u:\nm: %s\ncmac: %s\n", name, len, message_string, cmac_string);
sm_key_t key;
parse_hex(key, key_string);
sm_key_t cmac_test;
aes_cmac(cmac_test, m, len);
aes_cmac(cmac_test, key, m, len);
LOG_KEY(cmac_test);
@ -176,14 +191,33 @@ int main(void){
memset(zero, 0, 16);
PARSE_KEY(key);
// validate subkey k0,k1,k2 generation
aes128_calc_cyphertext(key, zero, k0);
VALIDATE_KEY(k0);
calc_subkeys(k0, k1, k2);
VALIDATE_KEY(k1);
VALIDATE_KEY(k2);
// validate AES_CMAC for some messages
VALIDATE_MESSAGE(m0);
VALIDATE_MESSAGE(m16);
VALIDATE_MESSAGE(m40);
VALIDATE_MESSAGE(m64);
// validate f4
printf("-- verify f4\n");
sm_key_t f4_x, f4_cmac, f4_cmac_test;
sm_key256_t f4_u, f4_v;
uint8_t f4_z;
parse_hex(f4_cmac, f4_cmac_string);
parse_hex(f4_u, f4_u_string);
parse_hex(f4_v, f4_v_string);
parse_hex(f4_x, f4_x_string);
parse_hex(&f4_z, f4_z_string);
f4(f4_cmac_test, f4_u, f4_v, f4_x, f4_z);
if (memcmp(f4_cmac_test, f4_cmac, 16)){
printf("CMAC incorrect!\n");
} else {
printf("CMAC correct!\n");
}
}