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Merge branch 'feature/hwcrypto_perf_ut' into 'master'

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mbedtls: enable HW SHA by default, add SHA performance test

See merge request espressif/esp-idf!6320
This commit is contained in:
Angus Gratton 2019-11-06 12:16:23 +08:00
commit 796dd96757
4 changed files with 62 additions and 2 deletions
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2
components/idf_test/include/idf_performance.h
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@ -30,4 +30,6 @@
// floating point instructions per divide and per sqrt (configured for worst-case with PSRAM workaround) // floating point instructions per divide and per sqrt (configured for worst-case with PSRAM workaround)
#define IDF_PERFORMANCE_MAX_ESP32_CYCLES_PER_DIV 70 #define IDF_PERFORMANCE_MAX_ESP32_CYCLES_PER_DIV 70
#define IDF_PERFORMANCE_MAX_ESP32_CYCLES_PER_SQRT 140 #define IDF_PERFORMANCE_MAX_ESP32_CYCLES_PER_SQRT 140
// SHA256 hardware throughput at 240MHz, threshold set lower than worst case
#define IDF_PERFORMANCE_MIN_SHA256_THROUGHPUT_MBSEC 9.0

2
components/mbedtls/Kconfig
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@ -163,7 +163,7 @@ menu "mbedTLS"
config MBEDTLS_HARDWARE_SHA config MBEDTLS_HARDWARE_SHA
bool "Enable hardware SHA acceleration" bool "Enable hardware SHA acceleration"
default n default y
help help
Enable hardware accelerated SHA1, SHA256, SHA384 & SHA512 in mbedTLS. Enable hardware accelerated SHA1, SHA256, SHA384 & SHA512 in mbedTLS.

2
components/mbedtls/test/CMakeLists.txt
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@ -1,6 +1,6 @@
idf_component_register(SRC_DIRS "." idf_component_register(SRC_DIRS "."
INCLUDE_DIRS "." INCLUDE_DIRS "."
REQUIRES unity test_utils mbedtls) REQUIRES unity test_utils mbedtls libsodium)
idf_component_get_property(mbedtls mbedtls COMPONENT_LIB) idf_component_get_property(mbedtls mbedtls COMPONENT_LIB)
target_compile_definitions(${mbedtls} INTERFACE "-DMBEDTLS_DEPRECATED_WARNING") target_compile_definitions(${mbedtls} INTERFACE "-DMBEDTLS_DEPRECATED_WARNING")

58
components/mbedtls/test/test_sha_perf.c Normal file
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@ -0,0 +1,58 @@
/* mbedTLS SHA performance test
*/
#include <string.h>
#include <stdio.h>
#include <stdbool.h>
#include "mbedtls/sha256.h"
#include "unity.h"
#include "sdkconfig.h"
#include "esp_timer.h"
#include "esp_heap_caps.h"
#include "test_utils.h"
#include "sodium/utils.h"
TEST_CASE_ESP32("mbedtls SHA performance", "[aes]")
{
const unsigned CALLS = 256;
const unsigned CALL_SZ = 16*1024;
mbedtls_sha256_context sha256_ctx;
int64_t start, end;
unsigned char sha256[32];
// allocate internal memory
uint8_t *buf = heap_caps_malloc(CALL_SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL);
TEST_ASSERT_NOT_NULL(buf);
memset(buf, 0x55, CALL_SZ);
mbedtls_sha256_init(&sha256_ctx);
start = esp_timer_get_time();
TEST_ASSERT_EQUAL(0, mbedtls_sha256_starts_ret(&sha256_ctx, false));
for (int c = 0; c < CALLS; c++) {
TEST_ASSERT_EQUAL(0, mbedtls_sha256_update_ret(&sha256_ctx, buf, CALL_SZ));
}
TEST_ASSERT_EQUAL(0, mbedtls_sha256_finish_ret(&sha256_ctx, sha256));
end = esp_timer_get_time();
free(buf);
mbedtls_sha256_free(&sha256_ctx);
/* Check the result. Reference value can be calculated using:
* dd if=/dev/zero bs=$((16*1024)) count=256 | tr '\000' '\125' | sha256sum
*/
const char* expected_hash = "c88df2638fb9699abaad05780fa5e0fdb6058f477069040eac8bed3231286275";
char hash_str[sizeof(sha256) * 2 + 1];
sodium_bin2hex(hash_str, sizeof(hash_str), sha256, sizeof(sha256));
TEST_ASSERT_EQUAL_STRING(expected_hash, hash_str);
float usecs = end - start;
// bytes/usec = MB/sec
float mb_sec = (CALL_SZ * CALLS) / usecs;
printf("SHA256 rate %.3fMB/sec\n", mb_sec);
#ifdef CONFIG_MBEDTLS_HARDWARE
// Don't put a hard limit on software SHA performance
TEST_PERFORMANCE_GREATER_THAN(SHA256_THROUGHPUT_MBSEC, "%.3fMB/sec", mb_sec);
#endif
}