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Merge branch 'refactor/linux_true_random_numbers' into 'master'

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refactor(esp_hw_support): Linux esp_random impl now returns true random numbers

Closes IDF-8881

See merge request espressif/esp-idf!30063
This commit is contained in:
Jakob Hasse
2024-04-15 22:59:14 +08:00
parent 4a94f9b27c d297845126
commit ee6ec3db8d
2 changed files with 75 additions and 25 deletions
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components/esp_hw_support/test_apps/host_test_linux/main/test_hw_support_linux.c
+57 -5
View File
@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -8,13 +8,13 @@
#include "unity.h"
#include "esp_random.h"
/* Note: these are just sanity tests, the implementation of esp_random do not produce cryptographically secure numbers on Linux
/* Note: these are just sanity tests, the implementation of esp_random() relies on getentropy() on Linux.
*/
const size_t NUM_RANDOM = 128; /* in most cases this is massive overkill */
TEST_CASE("call esp_random()", "[random]")
{
const size_t NUM_RANDOM = 128; /* in most cases this is massive overkill */
uint32_t zeroes = UINT32_MAX;
uint32_t ones = 0;
for (int i = 0; i < NUM_RANDOM - 1; i++) {
@@ -69,10 +69,62 @@ TEST_CASE("call esp_fill_random()", "[random]")
}
}
TEST_CASE("esp_fill_random() fills exactly one byte", "[random]")
{
const size_t BUF_SZ = 2;
uint8_t buf[BUF_SZ];
uint8_t one_buf[BUF_SZ];
bzero(one_buf, BUF_SZ);
for (size_t i = 0; i < NUM_RANDOM - 1; i++) {
esp_fill_random(buf, BUF_SZ - 1);
for (size_t j = 0; j < BUF_SZ - 1; j++) {
one_buf[j] |= buf[j];
}
}
TEST_ASSERT_EQUAL(0, one_buf[BUF_SZ - 1]);
TEST_ASSERT_GREATER_THAN(0, one_buf[BUF_SZ - 2]);
}
// The underlying system call accepts max 256 bytes, test that esp_fill_random() can read more
TEST_CASE("esp_fill_random() fills exactly 256 bytes", "[random]")
{
const size_t BUF_SZ = 257;
uint8_t buf[BUF_SZ];
uint8_t one_buf[BUF_SZ];
bzero(one_buf, BUF_SZ);
for (size_t i = 0; i < NUM_RANDOM - 1; i++) {
esp_fill_random(buf, BUF_SZ - 1);
for (size_t j = 0; j < BUF_SZ - 1; j++) {
one_buf[j] |= buf[j];
}
}
TEST_ASSERT_EQUAL(0, one_buf[BUF_SZ - 1]);
TEST_ASSERT_GREATER_THAN(0, one_buf[BUF_SZ - 2]);
TEST_ASSERT_GREATER_THAN(0, one_buf[0]);
}
TEST_CASE("esp_fill_random() fills exactly 257 bytes", "[random]")
{
const size_t BUF_SZ = 258;
uint8_t buf[BUF_SZ];
uint8_t one_buf[BUF_SZ];
bzero(one_buf, BUF_SZ);
for (size_t i = 0; i < NUM_RANDOM - 1; i++) {
esp_fill_random(buf, BUF_SZ - 1);
for (size_t j = 0; j < BUF_SZ - 1; j++) {
one_buf[j] |= buf[j];
}
}
TEST_ASSERT_EQUAL(0, one_buf[BUF_SZ - 1]);
TEST_ASSERT_GREATER_THAN(0, one_buf[BUF_SZ - 2]);
TEST_ASSERT_GREATER_THAN(0, one_buf[0]);
}
void app_main(void)
{
printf("Running heap linux API host test app");
printf("Running hw support linux API host test app");
unity_run_menu();
}