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Merge branch 'feature/tls1_3_support' into 'master'

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esp-tls: add initial support for TLS1.3 connections (client mode)

Closes IDF-7251 and IDF-7252

See merge request espressif/esp-idf!23442
This commit is contained in:
Mahavir Jain 2023-04-27 18:13:43 +08:00
commit cba923788e
4 changed files with 49 additions and 20 deletions
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16
components/esp-tls/esp_tls_mbedtls.c
View File

@ -72,6 +72,15 @@ esp_err_t esp_create_mbedtls_handle(const char *hostname, size_t hostlen, const
assert(tls != NULL);
int ret;
esp_err_t esp_ret = ESP_FAIL;
#ifdef CONFIG_MBEDTLS_SSL_PROTO_TLS1_3
psa_status_t status = psa_crypto_init();
if (status != PSA_SUCCESS) {
ESP_LOGE(TAG, "Failed to initialize PSA crypto, returned %d\n", (int) status);
return esp_ret;
}
#endif // CONFIG_MBEDTLS_SSL_PROTO_TLS1_3
tls->server_fd.fd = tls->sockfd;
mbedtls_ssl_init(&tls->ssl);
mbedtls_ctr_drbg_init(&tls->ctr_drbg);
@ -220,6 +229,13 @@ ssize_t esp_mbedtls_read(esp_tls_t *tls, char *data, size_t datalen)
{
ssize_t ret = mbedtls_ssl_read(&tls->ssl, (unsigned char *)data, datalen);
#if CONFIG_MBEDTLS_SSL_PROTO_TLS1_3 && CONFIG_MBEDTLS_CLIENT_SSL_SESSION_TICKETS
while (ret == MBEDTLS_ERR_SSL_RECEIVED_NEW_SESSION_TICKET) {
ESP_LOGD(TAG, "got session ticket in TLS 1.3 connection, retry read");
ret = mbedtls_ssl_read(&tls->ssl, (unsigned char *)data, datalen);
}
#endif // CONFIG_MBEDTLS_SSL_PROTO_TLS1_3 && CONFIG_MBEDTLS_CLIENT_SSL_SESSION_TICKETS
if (ret < 0) {
if (ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY) {
return 0;

3
components/esp-tls/private_include/esp_tls_private.h
View File

@ -26,6 +26,9 @@
#ifdef CONFIG_ESP_TLS_SERVER_SESSION_TICKETS
#include "mbedtls/ssl_ticket.h"
#endif
#ifdef CONFIG_MBEDTLS_SSL_PROTO_TLS1_3
#include "psa/crypto.h"
#endif
#elif CONFIG_ESP_TLS_USING_WOLFSSL
#include "wolfssl/wolfcrypt/settings.h"
#include "wolfssl/ssl.h"

2
components/mbedtls/port/include/mbedtls/esp_config.h
View File

@ -2996,7 +2996,7 @@
#endif
/* This flag makes sure that we are not using
* any functino that is deprecated by mbedtls */
* any function that is deprecated by mbedtls */
#define MBEDTLS_DEPRECATED_REMOVED
#endif /* ESP_CONFIG_H */

48
examples/protocols/https_mbedtls/main/https_mbedtls_example_main.c
View File

@ -37,6 +37,9 @@
#include "mbedtls/entropy.h"
#include "mbedtls/ctr_drbg.h"
#include "mbedtls/error.h"
#ifdef CONFIG_MBEDTLS_SSL_PROTO_TLS1_3
#include "psa/crypto.h"
#endif
#include "esp_crt_bundle.h"
@ -65,6 +68,14 @@ static void https_get_task(void *pvParameters)
mbedtls_ssl_config conf;
mbedtls_net_context server_fd;
#ifdef CONFIG_MBEDTLS_SSL_PROTO_TLS1_3
psa_status_t status = psa_crypto_init();
if (status != PSA_SUCCESS) {
ESP_LOGE(TAG, "Failed to initialize PSA crypto, returned %d\n", (int) status);
return;
}
#endif
mbedtls_ssl_init(&ssl);
mbedtls_x509_crt_init(&cacert);
mbedtls_ctr_drbg_init(&ctr_drbg);
@ -110,12 +121,7 @@ static void https_get_task(void *pvParameters)
goto exit;
}
/* MBEDTLS_SSL_VERIFY_OPTIONAL is bad for security, in this example it will print
a warning if CA verification fails but it will continue to connect.
You should consider using MBEDTLS_SSL_VERIFY_REQUIRED in your own code.
*/
mbedtls_ssl_conf_authmode(&conf, MBEDTLS_SSL_VERIFY_OPTIONAL);
mbedtls_ssl_conf_authmode(&conf, MBEDTLS_SSL_VERIFY_REQUIRED);
mbedtls_ssl_conf_ca_chain(&conf, &cacert, NULL);
mbedtls_ssl_conf_rng(&conf, mbedtls_ctr_drbg_random, &ctr_drbg);
#ifdef CONFIG_MBEDTLS_DEBUG
@ -123,10 +129,9 @@ static void https_get_task(void *pvParameters)
#endif
#ifdef CONFIG_MBEDTLS_SSL_PROTO_TLS1_3
mbedtls_ssl_conf_min_version(&conf, MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_4);
mbedtls_ssl_conf_max_version(&conf, MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_4);
mbedtls_ssl_conf_min_tls_version(&conf, MBEDTLS_SSL_VERSION_TLS1_3);
mbedtls_ssl_conf_max_tls_version(&conf, MBEDTLS_SSL_VERSION_TLS1_3);
#endif
if ((ret = mbedtls_ssl_setup(&ssl, &conf)) != 0)
{
ESP_LOGE(TAG, "mbedtls_ssl_setup returned -0x%x\n\n", -ret);
@ -200,22 +205,28 @@ static void https_get_task(void *pvParameters)
bzero(buf, sizeof(buf));
ret = mbedtls_ssl_read(&ssl, (unsigned char *)buf, len);
if(ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE)
#if CONFIG_MBEDTLS_SSL_PROTO_TLS1_3 && CONFIG_MBEDTLS_CLIENT_SSL_SESSION_TICKETS
if (ret == MBEDTLS_ERR_SSL_RECEIVED_NEW_SESSION_TICKET) {
ESP_LOGD(TAG, "got session ticket in TLS 1.3 connection, retry read");
continue;
}
#endif // CONFIG_MBEDTLS_SSL_PROTO_TLS1_3 && CONFIG_MBEDTLS_CLIENT_SSL_SESSION_TICKETS
if(ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY) {
if (ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE) {
continue;
}
if (ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY) {
ret = 0;
break;
}
if(ret < 0)
{
if (ret < 0) {
ESP_LOGE(TAG, "mbedtls_ssl_read returned -0x%x", -ret);
break;
}
if(ret == 0)
{
if (ret == 0) {
ESP_LOGI(TAG, "connection closed");
break;
}
@ -223,7 +234,7 @@ static void https_get_task(void *pvParameters)
len = ret;
ESP_LOGD(TAG, "%d bytes read", len);
/* Print response directly to stdout as it is read */
for(int i = 0; i < len; i++) {
for (int i = 0; i < len; i++) {
putchar(buf[i]);
}
} while(1);
@ -234,8 +245,7 @@ static void https_get_task(void *pvParameters)
mbedtls_ssl_session_reset(&ssl);
mbedtls_net_free(&server_fd);
if(ret != 0)
{
if (ret != 0) {
mbedtls_strerror(ret, buf, 100);
ESP_LOGE(TAG, "Last error was: -0x%x - %s", -ret, buf);
}
@ -246,7 +256,7 @@ static void https_get_task(void *pvParameters)
ESP_LOGI(TAG, "Completed %d requests", ++request_count);
printf("Minimum free heap size: %" PRIu32 " bytes\n", esp_get_minimum_free_heap_size());
for(int countdown = 10; countdown >= 0; countdown--) {
for (int countdown = 10; countdown >= 0; countdown--) {
ESP_LOGI(TAG, "%d...", countdown);
vTaskDelay(1000 / portTICK_PERIOD_MS);
}