From c32465cf145932e7e8806063a1bb0ac56e1422a0 Mon Sep 17 00:00:00 2001
From: Bogdan Pilyugin <bogd@live.ru>
Date: Fri, 1 Sep 2023 12:43:39 +0200
Subject: [PATCH] sha256 hmac moved to helpers

---
 include/Helpers.h |  5 +++++
 src/Helpers.c     | 17 +++++++++++++++++
 src/SysComm.c     | 16 ----------------
 3 files changed, 22 insertions(+), 16 deletions(-)

diff --git a/include/Helpers.h b/include/Helpers.h
index 23196f9..1836d5e 100644
--- a/include/Helpers.h
+++ b/include/Helpers.h
@@ -35,6 +35,11 @@ void bin_to_hex_str(const uint8_t *buf, int len, char *hex);
 void UnencodeURL(char* URL);
 esp_err_t SHA256Hash(unsigned char *data, int datalen,
                                  unsigned char *res);
+esp_err_t SHA256hmacHash(unsigned char *data,
+                                int datalen,
+                                unsigned char *key,
+                                int keylen,
+                                unsigned char *res);
 #if (CONFIG_FREERTOS_USE_TRACE_FACILITY == 1)
 void vTaskGetRunTimeStatsCustom( char *pcWriteBuffer );
 #endif
diff --git a/src/Helpers.c b/src/Helpers.c
index e2ccaa4..46b1878 100644
--- a/src/Helpers.c
+++ b/src/Helpers.c
@@ -191,6 +191,23 @@ esp_err_t SHA256Hash(unsigned char *data, int datalen,
     return ESP_OK;
 }
 
+esp_err_t SHA256hmacHash(unsigned char *data,
+                                int datalen,
+                                unsigned char *key,
+                                int keylen,
+                                unsigned char *res)
+{
+    mbedtls_md_context_t ctx;
+    mbedtls_md_type_t md_type = MBEDTLS_MD_SHA256;
+    mbedtls_md_init(&ctx);
+    mbedtls_md_setup(&ctx, mbedtls_md_info_from_type(md_type), 1);
+    mbedtls_md_hmac_starts(&ctx, key, keylen);
+    mbedtls_md_hmac_update(&ctx, (const unsigned char*) data, datalen);
+    mbedtls_md_hmac_finish(&ctx, res);
+    mbedtls_md_free(&ctx);
+    return ESP_OK;
+}
+
 # if(CONFIG_FREERTOS_USE_TRACE_FACILITY == 1)
 void vTaskGetRunTimeStatsCustom( char *pcWriteBuffer )
 {
diff --git a/src/SysComm.c b/src/SysComm.c
index db6586c..fb977b7 100644
--- a/src/SysComm.c
+++ b/src/SysComm.c
@@ -54,22 +54,6 @@ void regCustomPayloadTypeHandler(sys_error_code (*payload_handler)(data_message_
     CustomPayloadTypeHandler = payload_handler;
 }
 
-static esp_err_t SHA256hmacHash(unsigned char *data,
-                                int datalen,
-                                unsigned char *key,
-                                int keylen,
-                                unsigned char *res)
-{
-    mbedtls_md_context_t ctx;
-    mbedtls_md_type_t md_type = MBEDTLS_MD_SHA256;
-    mbedtls_md_init(&ctx);
-    mbedtls_md_setup(&ctx, mbedtls_md_info_from_type(md_type), 1);
-    mbedtls_md_hmac_starts(&ctx, key, keylen);
-    mbedtls_md_hmac_update(&ctx, (const unsigned char*) data, datalen);
-    mbedtls_md_hmac_finish(&ctx, res);
-    mbedtls_md_free(&ctx);
-    return ESP_OK;
-}
 
 
 static sys_error_code PayloadType_1_Handler(data_message_t *MSG)