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test/sm: implement h6

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This commit is contained in:
Matthias Ringwald 2016-05-06 15:13:59 +02:00
parent bb2544e8fc
commit 29f1685614
1 changed files with 33 additions and 2 deletions
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35
test/security_manager/aes_cmac_test.c
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@ -67,6 +67,13 @@ static uint32_t big_endian_read_32( const uint8_t * buffer, int pos) {
return ((uint32_t) buffer[(pos)+3]) | (((uint32_t)buffer[(pos)+2]) << 8) | (((uint32_t)buffer[(pos)+1]) << 16) | (((uint32_t) buffer[pos]) << 24);
}
static void big_endian_store_32(uint8_t *buffer, uint16_t pos, uint32_t value){
buffer[pos++] = value >> 24;
buffer[pos++] = value >> 16;
buffer[pos++] = value >> 8;
buffer[pos++] = value;
}
static int nibble_for_char(char c){
if (c >= '0' && c <= '9') return c - '0';
if (c >= 'a' && c <= 'f') return c - 'a' + 10;
@ -286,6 +293,15 @@ static uint32_t g2(const sm_key256_t u, const sm_key256_t v, const sm_key_t x, c
return big_endian_read_32(buffer, 12);
}
// h6(W, keyID) = AES-CMACW(keyID)
// - W is 128 bits
// - keyID is 32 bits
static void h6(sm_key_t res, const sm_key_t w, const uint32_t key_id){
uint8_t key_id_buffer[4];
big_endian_store_32(key_id_buffer, 0, key_id);
aes_cmac(res, w, key_id_buffer, 4);
}
int main(void){
sm_key_t key, k0, k1, k2, zero;
memset(zero, 0, 16);
@ -366,8 +382,8 @@ int main(void){
printf("CMAC correct!\n");
}
// validate h2
printf("-- verify h2\n");
// validate g2
printf("-- verify g2\n");
sm_key_t g2_cmac, g2_x, g2_y;
sm_key256_t g2_u, g2_v;
parse_hex(g2_x, g2_x_string);
@ -385,4 +401,19 @@ int main(void){
printf("G2 correct!\n");
}
// validate h6
printf("-- verify h6\n");
sm_key_t h6_key, h6_res, h6_cmac;
uint8_t h6_key_id_buffer[4];
parse_hex(h6_key, h6_key_string);
parse_hex(h6_key_id_buffer, h6_key_id_string);
parse_hex(h6_cmac, h6_cmac_string);
uint32_t h6_key_id = big_endian_read_32(h6_key_id_buffer, 0);
h6(h6_res, h6_key, h6_key_id);
hexdump2(h6_res, 16);
if (memcmp(h6_res, h6_cmac, 16)){
printf("CMAC incorrect!\n");
} else {
printf("CMAC correct!\n");
}
}