From 62f19de5dff4273c1a6b101440b6c9ef25f7a362 Mon Sep 17 00:00:00 2001
From: Markus Swarowsky <markus.swarowsky@nordicsemi.no>
Date: Mon, 11 Dec 2023 17:27:32 +0100
Subject: [PATCH] modules: mbedtls: Add a mbedtls_ms_time implementation

MbedTLS 3.5.0 requires a implementation of mbedtls_ms_time giving a
time in ms for TLS 1.3
Therefor adding an alternative implementation using zephyrs
k_uptime_get

Signed-off-by: Markus Swarowsky <markus.swarowsky@nordicsemi.no>
---
 modules/mbedtls/CMakeLists.txt               |  1 +
 modules/mbedtls/configs/config-tls-generic.h |  1 +
 modules/mbedtls/zephyr_time.c                | 13 +++++++++++++
 3 files changed, 15 insertions(+)
 create mode 100644 modules/mbedtls/zephyr_time.c

diff --git a/modules/mbedtls/CMakeLists.txt b/modules/mbedtls/CMakeLists.txt
index 2bab7fe1038d9b4..a3b81f1d5092f0d 100644
--- a/modules/mbedtls/CMakeLists.txt
+++ b/modules/mbedtls/CMakeLists.txt
@@ -180,6 +180,7 @@ zephyr_interface_library_named(mbedTLS)
       ${ZEPHYR_CURRENT_MODULE_DIR}/library/ssl_tls13_keys.c
       ${ZEPHYR_CURRENT_MODULE_DIR}/library/ssl_tls13_server.c
       ${ZEPHYR_CURRENT_MODULE_DIR}/library/ssl_tls.c
+      zephyr_time.c
     )
 
     zephyr_library_sources(${mbedtls_source})
diff --git a/modules/mbedtls/configs/config-tls-generic.h b/modules/mbedtls/configs/config-tls-generic.h
index 61278858ef2b544..59d98f650675e9d 100644
--- a/modules/mbedtls/configs/config-tls-generic.h
+++ b/modules/mbedtls/configs/config-tls-generic.h
@@ -37,6 +37,7 @@
 #if defined(CONFIG_MBEDTLS_HAVE_TIME_DATE)
 #define MBEDTLS_HAVE_TIME
 #define MBEDTLS_HAVE_TIME_DATE
+#define MBEDTLS_PLATFORM_MS_TIME_ALT
 #endif
 
 #if defined(CONFIG_MBEDTLS_TEST)
diff --git a/modules/mbedtls/zephyr_time.c b/modules/mbedtls/zephyr_time.c
new file mode 100644
index 000000000000000..152bd9d06dae0da
--- /dev/null
+++ b/modules/mbedtls/zephyr_time.c
@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2023 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <mbedtls/platform_time.h>
+#include <zephyr/kernel.h>
+
+mbedtls_ms_time_t mbedtls_ms_time(void)
+{
+	return (mbedtls_ms_time_t)k_uptime_get();
+}