/**
* Test random
*
* TODO: check params/data read/written.
* TODO: check overflow tests.
*/
static void RandomTest(void)
{
uint8_t buf[32];
uint32_t size;
ResetMocks();
size = sizeof(buf);
TEST_EQ(TlclGetRandom(buf, sizeof(buf), &size), 0, "GetRandom");
TEST_EQ(calls[0].req_cmd, TPM_ORD_GetRandom, " cmd");
TEST_EQ(size, 0, " size 0");
}
/****************************************************************************
*
* Open an OSAP session
* Object Specific Authorization Protocol, returned handle must manipulate
* a single object given as a parameter (can introduce AuthData).
* *
****************************************************************************/
uint32_t TSS_OSAPopen(struct tss_osapsess *sess, const uint8_t *key, uint16_t etype,
uint32_t evalue)
{
struct s_tpm_osap_open_cmd cmd;
uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE];
uint32_t nonceSize;
uint32_t result;
debug("TPM: TSS_OSAPopen\n");
/* check input arguments */
if (key == NULL || sess == NULL) {
return TPM_E_NULL_ARG;
}
TlclGetRandom(sess->ononceOSAP, TPM_NONCE_SIZE, &nonceSize);
memcpy(&cmd, &tpm_osap_open_cmd, sizeof(cmd));
ToTpmUint16(cmd.buffer + tpm_osap_open_cmd.type, etype);
ToTpmUint32(cmd.buffer + tpm_osap_open_cmd.value, evalue);
memcpy(cmd.buffer + tpm_osap_open_cmd.nonce, sess->ononceOSAP, TPM_NONCE_SIZE);
result = TlclSendReceive(cmd.buffer, response, sizeof(response));
if (result == TPM_SUCCESS) {
FromTpmUint32(response + kTpmResponseHeaderLength, &(sess->handle));
memcpy(sess->enonce, response + kTpmResponseHeaderLength + sizeof(uint32_t), TPM_NONCE_SIZE);
memcpy(sess->enonceOSAP, response + kTpmResponseHeaderLength + sizeof(uint32_t) + TPM_NONCE_SIZE, TPM_NONCE_SIZE);
debug("TPM: TSS_OSAPopen success, calculating HMAC\n");
/*DATA_DEBUG("key", key, TPM_HASH_SIZE);
DATA_DEBUG("enonceOSAP", sess->enonceOSAP, TPM_NONCE_SIZE);
DATA_DEBUG("ononceOSAP", sess->ononceOSAP, TPM_NONCE_SIZE);*/
/* not implemented */
SHA1_CTX hmac;
hmac_starts(&hmac, key, TPM_HASH_SIZE);
hmac_update(&hmac, sess->enonceOSAP, TPM_NONCE_SIZE);
hmac_update(&hmac, sess->ononceOSAP, TPM_NONCE_SIZE);
hmac_finish(&hmac, key, TPM_HASH_SIZE, sess->ssecret);
}
return result;
}
