ret_code_t nrf_crypto_rng_backend_reseed(void * const p_context,
void * p_temp_buffer,
uint8_t * p_input_data,
size_t size)
{
bool mutex_locked;
CRYSError_t err_code;
ret_code_t ret_val = NRF_SUCCESS;
CRYS_RND_WorkBuff_t * p_work_buffer = (CRYS_RND_WorkBuff_t *)p_temp_buffer;
CRYS_RND_State_t * p_crys_rnd_state =
&((nrf_crypto_backend_rng_context_t *)p_context)->crys_rnd_state;
VERIFY_TRUE(size <= CRYS_RND_ADDITINAL_INPUT_MAX_SIZE_WORDS, NRF_ERROR_CRYPTO_INPUT_LENGTH);
VERIFY_TRUE((size & 0x3) == 0, NRF_ERROR_CRYPTO_INTERNAL);
mutex_locked = cc310_backend_mutex_trylock();
VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
cc310_backend_enable();
if (size > 0)
{
err_code = CRYS_RND_AddAdditionalInput(p_crys_rnd_state, p_input_data, size);
ret_val = result_get(err_code);
if (ret_val != NRF_SUCCESS)
{
goto exit;
}
}
err_code = CRYS_RND_Reseeding(p_crys_rnd_state, p_work_buffer);
ret_val = result_get(err_code);
exit:
cc310_backend_disable();
cc310_backend_mutex_unlock();
return ret_val;
}
/*rnd_test - performs basic integration test for RND module*/
int rnd_tests(void)
{
uint32_t ret = 0/*,MaxVectorSize = 0*/;
int test_index = 0;
/*Set additional input for rng seed*/
ret = CRYS_RND_AddAdditionalInput(rndContext_ptr,
rndVectors[test_index].rndTest_AddInputData,
rndVectors[test_index].rndTest_AddInputSize);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n CRYS_RND_AddAdditionalInput failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_AddAdditionalInput passed\n");
/*Reseed rnd using added input (new seed will be generated using additional input)*/
ret = CRYS_RND_Reseeding (rndContext_ptr,
rndWorkBuff_ptr);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n CRYS_RND_Reseeding failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_Reseeding passed\n");
/*Generate random vector 1*/
ret = CRYS_RND_GenerateVector(&rndContext_ptr->rndState,
rndVectors[test_index].rndTest_RandomVectorSize,
rndVectors[test_index].rndTest_RandomVectorData1);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVector for vector 1 failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVector for first vector passed\n");
/*Generate rnadom vector 2*/
ret = CRYS_RND_GenerateVector(&rndContext_ptr->rndState,
rndVectors[test_index].rndTest_RandomVectorSize,
rndVectors[test_index].rndTest_RandomVectorData2);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVector for vector 2 failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVector for second vector passed\n");
/*Compare two generated vectors - should not be the same value*/
ret = SaSi_PalMemCmp(rndVectors[test_index].rndTest_RandomVectorData1,
rndVectors[test_index].rndTest_RandomVectorData2,
rndVectors[test_index].rndTest_RandomVectorSize);
if (ret == SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n Two random vectors should not are the same \n");
return ret;
}
INTEG_TEST_PRINT("\n Two generated vectors are different as expected\n");
/*Generate random vector in range when max value is NULL*/
ret = CRYS_RND_GenerateVectorInRange(rndContext_ptr,
rndVectors[test_index].rndTest_RandomVectorInRangeSize1,
NULL,
rndVectors[test_index].rndTest_RandomVectorInRangeData);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVectorInRange for vector with fixed size failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVectorInRange 1 passed\n");
/*Generate random vector in range with max vector */
ret = CRYS_RND_GenerateVectorInRange(rndContext_ptr,
rndVectors[test_index].rndTest_RandomVectorInRangeSize2,
rndVectors[test_index].rndTest_MaxVectorInRange2,
rndVectors[test_index].rndTest_RandomVectorInRangeData2);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVectorInRange failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVectorInRange 2 passed\n");
/*Perform UnInstantiation*/
ret = CRYS_RND_UnInstantiation(rndContext_ptr);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n CRYS_RND_UnInstantiation failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_UnInstantiation passed\n");
/*Try to create random vector without instantiation - should fail*/
ret = CRYS_RND_GenerateVector(&rndContext_ptr->rndState,
rndVectors[test_index].rndTest_RandomVectorSize,
rndVectors[test_index].rndTest_RandomVectorData2);
if (ret != CRYS_RND_STATE_VALIDATION_TAG_ERROR){
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVector returned wrong error 0x%x,\n CRYS_RND_STATE_VALIDATION_TAG_ERROR should be returned\n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVector failed as expected\n");
/*Set additional input for RND seed*/
ret = CRYS_RND_AddAdditionalInput(rndContext_ptr,
rndVectors[test_index].rndTest_AddInputData,
rndVectors[test_index].rndTest_AddInputSize);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n CRYS_RND_AddAdditionalInput failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_AddAdditionalInput passed\n");
/*Perform instantiation for new seed*/
ret = CRYS_RND_Instantiation(rndContext_ptr,
rndWorkBuff_ptr);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n CRYS_RND_Instantiation failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_Instantiation passed\n");
/*Try to create two vectors and check that the vectors are different*/
ret = CRYS_RND_GenerateVector(&rndContext_ptr->rndState,
rndVectors[test_index].rndTest_RandomVectorSize,
rndVectors[test_index].rndTest_RandomVectorData1);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVector for vector 1 failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVector 1 passed\n");
ret = CRYS_RND_GenerateVector(&rndContext_ptr->rndState,
rndVectors[test_index].rndTest_RandomVectorSize,
rndVectors[test_index].rndTest_RandomVectorData2);
if (ret != SA_SILIB_RET_OK){
INTEG_TEST_PRINT(" CRYS_RND_GenerateVector for vector 2 failed with 0x%x \n",ret);
return ret;
}
INTEG_TEST_PRINT("\n CRYS_RND_GenerateVector 2 passed\n");
ret = SaSi_PalMemCmp(rndVectors[test_index].rndTest_RandomVectorData1,
rndVectors[test_index].rndTest_RandomVectorData2,
rndVectors[test_index].rndTest_RandomVectorSize);
if (ret == SA_SILIB_RET_OK){
INTEG_TEST_PRINT(" Two random vectors should not are the same \n");
return ret;
}
INTEG_TEST_PRINT("\n Compare passed\n");
INTEG_TEST_PRINT("\n All RND tests passed\n");
INTEG_TEST_PRINT("\n==========================\n");
ret = SA_SILIB_RET_OK;
return ret;
}
