STMicroelectronics · parmi93 · Mar 19, 2026 · Apr 2, 2026 · Apr 3, 2026 · Apr 3, 2026
diff --git a/README.md b/README.md
@@ -62,9 +62,9 @@ Reference implementation for most common STSE applicative use case can be found
 Following applicative project can be used as reference for STSELib integration and usage.
 
 - STSAFE-A
-    - [stsafe-a-sdk](https://github.com/STMicroelectronics/STSAFE-A120-sdk) 
-    - [wolfssl-examples](https://github.com/wolfSSL/wolfssl-examples/tree/master/stsafe) developed and maintained by [WolfSSL](https://www.wolfssl.com/) 
-    - [Zephyr_st-stsafe-a1xx](https://github.com/catie-aq/zephyr_st-stsafe-a1xx) developed and maintained by [CATIE](https://www.catie.fr/language/en/home/) 
+    - [stsafe-a-sdk](https://github.com/STMicroelectronics/STSAFE-A120-sdk)
+    - [wolfssl-examples](https://github.com/wolfSSL/wolfssl-examples/tree/master/stsafe) developed and maintained by [WolfSSL](https://www.wolfssl.com/)
+    - [Zephyr_st-stsafe-a1xx](https://github.com/catie-aq/zephyr_st-stsafe-a1xx) developed and maintained by [CATIE](https://www.catie.fr/language/en/home/)
 
 
 - STSAFE-L

diff --git a/api/stse_aes.c b/api/stse_aes.c
@@ -15,6 +15,9 @@
  *
  *****************************************************************************/
 
+/* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
+
 #include "api/stse_aes.h"
 
 stse_ReturnCode_t stse_aes_ecb_encrypt(

diff --git a/api/stse_asymmetric_keys_management.c b/api/stse_asymmetric_keys_management.c
@@ -16,6 +16,8 @@
  *****************************************************************************/
 
 /* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
+#include <string.h>
 
 #include "api/stse_asymmetric_keys_management.h"
 

diff --git a/api/stse_data_storage.c b/api/stse_data_storage.c
@@ -43,15 +43,15 @@ stse_ReturnCode_t stse_data_storage_get_partitioning_table(
     stse_Handler_t *pSTSE,
     PLAT_UI8 total_partition_count,
     stsafea_data_partition_record_t *pPartitioning_table,
-    PLAT_UI16 Partitioning_table_length) {
+    PLAT_UI16 partitioning_table_size) {
 
     stse_ReturnCode_t ret = STSE_API_INCOMPATIBLE_DEVICE_TYPE;
 
 #ifdef STSE_CONF_STSAFE_A_SUPPORT
 #ifdef STSE_CONF_STSAFE_L_SUPPORT
     if (pSTSE->device_type != STSAFE_L010) {
 #endif /* STSE_CONF_STSAFE_L_SUPPORT */
-        ret = stsafea_get_data_partitions_configuration(pSTSE, total_partition_count, pPartitioning_table, Partitioning_table_length);
+        ret = stsafea_get_data_partitions_configuration(pSTSE, total_partition_count, pPartitioning_table, partitioning_table_size);
 #ifdef STSE_CONF_STSAFE_L_SUPPORT
     }
 #endif /* STSE_CONF_STSAFE_L_SUPPORT */
@@ -111,7 +111,6 @@ stse_ReturnCode_t stse_data_storage_read_data_zone(
         case STSAFE_A100:
         case STSAFE_A110:
         case STSAFE_A120:
-        case STSAFE_A200:
             ret = stsafea_read_data_zone(
                 pSTSE,
                 zone,
@@ -181,7 +180,6 @@ stse_ReturnCode_t stse_data_storage_update_data_zone(
     case STSAFE_A100:
     case STSAFE_A110:
     case STSAFE_A120:
-    case STSAFE_A200:
         ret = stsafea_update_data_zone(
             pSTSE,
             zone,
@@ -242,7 +240,6 @@ stse_ReturnCode_t stse_data_storage_decrement_counter_zone(
     case STSAFE_A100:
     case STSAFE_A110:
     case STSAFE_A120:
-    case STSAFE_A200:
         ret = stsafea_decrement_counter_zone(
             pSTSE,
             zone,
@@ -315,7 +312,6 @@ stse_ReturnCode_t stse_data_storage_read_counter_zone(
         case STSAFE_A100:
         case STSAFE_A110:
         case STSAFE_A120:
-        case STSAFE_A200:
             ret = stsafea_read_counter_zone(
                 pSTSE,
                 zone,

diff --git a/api/stse_data_storage.h b/api/stse_data_storage.h
@@ -49,15 +49,15 @@ stse_ReturnCode_t stse_data_storage_get_total_partition_count(
  * \param[in]   pSTSE                   Pointer to target STSE handler
  * \param[in]   total_partition_count   Total partition count
  * \param[out]  pPartitioning_table     Pointer to the partition table buffer
- * \param[in]   Partitioning_table_length Length of the partition table to be received
+ * \param[in]   partitioning_table_size Size (in bytes) of the partition table (@p pPartitioning_table) to be received
  * \return \ref STSE_OK on success ; \ref stse_ReturnCode_t error code otherwise
  * \details \include{doc} stse_data_storage_get_partitioning_table.dox
  */
 stse_ReturnCode_t stse_data_storage_get_partitioning_table(
     stse_Handler_t *pSTSE,
     PLAT_UI8 total_partition_count,
     stsafea_data_partition_record_t *pPartitioning_table,
-    PLAT_UI16 Partitioning_table_length);
+    PLAT_UI16 partitioning_table_size);
 
 /*!
  * \brief       Read one memory zone of the STSE device

diff --git a/api/stse_derive_keys.c b/api/stse_derive_keys.c
@@ -15,6 +15,10 @@
  *
  *****************************************************************************/
 
+/* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
+#include <string.h>
+
 #include "api/stse_derive_keys.h"
 
 stse_ReturnCode_t stse_derive_key(

diff --git a/api/stse_device_authentication.c b/api/stse_device_authentication.c
@@ -16,6 +16,7 @@
  *****************************************************************************/
 
 /* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
 
 #include "api/stse_device_authentication.h"
 #include "api/stse_ecc.h"

diff --git a/api/stse_device_management.c b/api/stse_device_management.c
@@ -16,6 +16,8 @@
  *****************************************************************************/
 
 /* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
+
 #include "api/stse_device_management.h"
 
 /* Exported variables --------------------------------------------------------*/
@@ -122,7 +124,6 @@ stse_ReturnCode_t stse_device_enter_hibernate(stse_Handler_t *pSTSE,
 #ifdef STSE_CONF_STSAFE_A_SUPPORT
     case STSAFE_A100:
     case STSAFE_A110:
-    case STSAFE_A200:
         ret = stsafea_hibernate(pSTSE, wake_up_mode);
         break;
     case STSAFE_A120:
@@ -154,7 +155,6 @@ stse_ReturnCode_t stse_device_power_on(stse_Handler_t *pSTSE) {
     case STSAFE_A100:
     case STSAFE_A110:
     case STSAFE_A120:
-    case STSAFE_A200:
         stse_platform_Delay_ms(stsafea_boot_time[pSTSE->device_type]);
         break;
 #endif /* STSE_CONF_STSAFE_A_SUPPORT */
@@ -200,7 +200,6 @@ stse_ReturnCode_t stse_device_echo(stse_Handler_t *pSTSE, PLAT_UI8 *pIn, PLAT_UI
     case STSAFE_A100:
     case STSAFE_A110:
     case STSAFE_A120:
-    case STSAFE_A200:
         return stsafea_echo(pSTSE, pIn, pOut, size);
 #endif /* STSE_CONF_STSAFE_A_SUPPORT */
     default:
@@ -315,7 +314,6 @@ stse_ReturnCode_t stse_device_reset(stse_Handler_t *pSTSE) {
     case STSAFE_A100:
     case STSAFE_A110:
     case STSAFE_A120:
-    case STSAFE_A200:
         ret = stsafea_reset(pSTSE);
         break;
 #endif /* STSE_CONF_STSAFE_A_SUPPORT */

diff --git a/api/stse_ecc.c b/api/stse_ecc.c
@@ -15,14 +15,17 @@
  *
  *****************************************************************************/
 
+/* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
+
 #include "api/stse_ecc.h"
 
 stse_ReturnCode_t stse_ecc_verify_signature(
     stse_Handler_t *pSTSE,
     stse_ecc_key_type_t key_type,
-    PLAT_UI8 *pPublic_key,
-    PLAT_UI8 *pSignature,
-    PLAT_UI8 *pMessage,
+    const PLAT_UI8 *pPublic_key,
+    const PLAT_UI8 *pSignature,
+    const PLAT_UI8 *pMessage,
     PLAT_UI16 message_length,
     PLAT_UI8 eddsa_variant,
     PLAT_UI8 *pSignature_validity) {
@@ -81,7 +84,6 @@ stse_ReturnCode_t stse_ecc_generate_signature(
     case STSAFE_A100:
     case STSAFE_A110:
     case STSAFE_A120:
-    case STSAFE_A200:
         ret = stsafea_ecc_generate_signature(pSTSE, slot_number, key_type, pMessage, message_length, pSignature);
         break;
 #endif /* STSE_CONF_STSAFE_A_SUPPORT */

diff --git a/api/stse_ecc.h b/api/stse_ecc.h
@@ -60,9 +60,9 @@
 stse_ReturnCode_t stse_ecc_verify_signature(
     stse_Handler_t *pSTSE,
     stse_ecc_key_type_t key_type,
-    PLAT_UI8 *pPublic_key,
-    PLAT_UI8 *pSignature,
-    PLAT_UI8 *pMessage,
+    const PLAT_UI8 *pPublic_key,
+    const PLAT_UI8 *pSignature,
+    const PLAT_UI8 *pMessage,
     PLAT_UI16 message_length,
     PLAT_UI8 eddsa_variant,
     PLAT_UI8 *pSignature_validity);

diff --git a/api/stse_hash.c b/api/stse_hash.c
@@ -15,6 +15,9 @@
  *
  *****************************************************************************/
 
+/* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
+
 #include "api/stse_hash.h"
 #include "services/stsafea/stsafea_frame_transfer.h"
 #include "services/stsafea/stsafea_hash.h"

diff --git a/api/stse_mac.c b/api/stse_mac.c
@@ -15,6 +15,9 @@
  *
  *****************************************************************************/
 
+/* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
+
 #include "api/stse_mac.h"
 
 stse_ReturnCode_t stse_cmac_hmac_compute(

diff --git a/api/stse_random.c b/api/stse_random.c
@@ -15,6 +15,9 @@
  *
  *****************************************************************************/
 
+/* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
+
 #include "api/stse_random.h"
 
 stse_ReturnCode_t stse_generate_random(

diff --git a/api/stse_symmetric_keys_management.c b/api/stse_symmetric_keys_management.c
@@ -16,9 +16,11 @@
  *****************************************************************************/
 
 /* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
+#include <string.h>
 
-#include "api/stse_symmetric_keys_management.h"
 #include "api/stse_asymmetric_keys_management.h"
+#include "api/stse_symmetric_keys_management.h"
 #include "services/stsafea/stsafea_public_key_slots.h"
 
 #define STSAFEA_HOST_KEY_WRAPPING_AUTHENTICATION_TAG_LENGTH STSE_KEK_ENVELOPE_MAC_SIZE
@@ -103,7 +105,7 @@ static stse_ReturnCode_t stse_start_volatile_KEK_session(
         memset(stsafe_ecdhe_public_key, 0, pub_key_size);
         memset(host_ecdhe_public_key, 0, pub_key_size);
         memset(host_ecdhe_private_key, 0, priv_key_size);
-        stsafea_session_clear_context(pSession);
+        stse_session_erase_context(pSession);
         return ret;
     }
 
@@ -118,7 +120,7 @@ static stse_ReturnCode_t stse_start_volatile_KEK_session(
     if (ret != STSE_OK) {
         memset(stsafe_ecdhe_public_key, 0, pub_key_size);
         memset(host_ecdhe_public_key, 0, pub_key_size);
-        stsafea_session_clear_context(pSession);
+        stse_session_erase_context(pSession);
         return (STSE_UNEXPECTED_ERROR);
     }
 
@@ -144,7 +146,7 @@ static stse_ReturnCode_t stse_start_volatile_KEK_session(
     memset(host_ecdhe_public_key, 0, pub_key_size);
 
     if (ret != STSE_OK) {
-        stsafea_session_clear_context(pSession);
+        stse_session_erase_context(pSession);
         return (STSE_UNEXPECTED_ERROR);
     }
 
@@ -305,7 +307,7 @@ static stse_ReturnCode_t stse_start_volatile_KEK_session_authenticated(
         memset(host_ecdhe_public_key, 0, pub_key_size);
         memset(host_ecdhe_private_key, 0, ecdhe_priv_key_size);
         memset(pTBS, 0, tbs_length);
-        stsafea_session_clear_context(pSession);
+        stse_session_erase_context(pSession);
         return ret;
     }
 
@@ -322,7 +324,7 @@ static stse_ReturnCode_t stse_start_volatile_KEK_session_authenticated(
         memset(stsafe_ecdhe_public_key, 0, pub_key_size);
         memset(host_ecdhe_public_key, 0, pub_key_size);
         memset(host_ecdhe_private_key, 0, ecdhe_priv_key_size);
-        stsafea_session_clear_context(pSession);
+        stse_session_erase_context(pSession);
         return ret;
     }
 
@@ -336,7 +338,7 @@ static stse_ReturnCode_t stse_start_volatile_KEK_session_authenticated(
     if (ret != STSE_OK) {
         memset(stsafe_ecdhe_public_key, 0, pub_key_size);
         memset(host_ecdhe_public_key, 0, pub_key_size);
-        stsafea_session_clear_context(pSession);
+        stse_session_erase_context(pSession);
         return (STSE_UNEXPECTED_ERROR);
     }
 
@@ -363,7 +365,7 @@ static stse_ReturnCode_t stse_start_volatile_KEK_session_authenticated(
     memset(shared_secret, 0, stse_ecc_info_table[ecc_key_type].shared_secret_size);
 
     if (ret != STSE_OK) {
-        stsafea_session_clear_context(pSession);
+        stse_session_erase_context(pSession);
         return (STSE_UNEXPECTED_ERROR);
     }
 
@@ -387,7 +389,7 @@ static stse_ReturnCode_t stse_stop_volatile_KEK_session(stse_Handler_t *pSTSE, s
     }
 
     /* - Clear KEK session context on local host */
-    stsafea_session_clear_context(pSession);
+    stse_session_erase_context(pSession);
 
     /* - Clear KEK session context in target SE */
     ret = stsafea_stop_volatile_KEK_session(pSTSE);
@@ -547,7 +549,7 @@ stse_ReturnCode_t stse_host_key_provisioning_wrapped(
     PLAT_UI8 host_key_envelope[host_keys_envelope_length];
 
     stse_session_t volatile_KEK_session;
-    stsafea_session_clear_context(&volatile_KEK_session);
+    stse_session_erase_context(&volatile_KEK_session);
 
     /* - Start volatile KEK  */
     ret = stse_start_volatile_KEK_session(
@@ -634,7 +636,7 @@ stse_ReturnCode_t stse_host_key_provisioning_wrapped_authenticated(
     PLAT_UI8 host_key_envelope[host_keys_envelope_length];
 
     stse_session_t volatile_KEK_session;
-    stsafea_session_clear_context(&volatile_KEK_session);
+    stse_session_erase_context(&volatile_KEK_session);
 
     /* - Start volatile KEK Authenticated */
     ret = stse_start_volatile_KEK_session_authenticated(
@@ -1208,7 +1210,7 @@ stse_ReturnCode_t stse_write_symmetric_key_wrapped(
     }
 
     stse_session_t volatile_KEK_session;
-    stsafea_session_clear_context(&volatile_KEK_session);
+    stse_session_erase_context(&volatile_KEK_session);
 
     /* - Start Volatile KEK session */
     ret = stse_start_volatile_KEK_session(pSTSE, &volatile_KEK_session, kek_session_ecc_type);
@@ -1291,7 +1293,7 @@ stse_ReturnCode_t stse_write_symmetric_key_wrapped_authenticated(
     }
 
     stse_session_t volatile_KEK_session;
-    stsafea_session_clear_context(&volatile_KEK_session);
+    stse_session_erase_context(&volatile_KEK_session);
 
     /* - Start volatile KEK Authenticated */
     ret = stse_start_volatile_KEK_session_authenticated(

diff --git a/certificate/stse_certificate_crypto.c b/certificate/stse_certificate_crypto.c
@@ -15,9 +15,13 @@
   ******************************************************************************
   */
 
-#include "certificate/stse_certificate_crypto.h"
+/* Includes ------------------------------------------------------------------*/
+#include <stddef.h>
+#include <string.h>
+
 #include "api/stse_ecc.h"
 #include "api/stse_hash.h"
+#include "certificate/stse_certificate_crypto.h"
 
 stse_ReturnCode_t stse_certificate_verify_cert_signature(const stse_certificate_t *parent, const stse_certificate_t *child) {
     stse_ReturnCode_t ret;

diff --git a/core/stse_device.c b/core/stse_device.c
@@ -1,7 +1,7 @@
 /*!
  * ******************************************************************************
  * \file	stse_device.c
- * \brief   STSAFE Frame layer (sources)
+ * \brief   STSELib api for device (sources)
  * \author  STMicroelectronics - CS application team
  *
  ******************************************************************************
@@ -29,14 +29,17 @@ stse_ReturnCode_t stse_set_default_handler_value(stse_Handler_t *pStseHandler) {
     memset(&pStseHandler->perso_info, 0, sizeof(pStseHandler->perso_info));
     pStseHandler->pActive_host_session = NULL;
     pStseHandler->pActive_other_session = NULL;
+#if defined(STSE_CONF_STSAFE_A_SUPPORT) || \
+    (defined(STSE_CONF_STSAFE_L_SUPPORT) && defined(STSE_CONF_USE_I2C))
     pStseHandler->io.BusRecvStart = stse_platform_i2c_receive_start;
     pStseHandler->io.BusRecvContinue = stse_platform_i2c_receive_continue;
     pStseHandler->io.BusRecvStop = stse_platform_i2c_receive_stop;
     pStseHandler->io.BusSendStart = stse_platform_i2c_send_start;
     pStseHandler->io.BusSendContinue = stse_platform_i2c_send_continue;
     pStseHandler->io.BusSendStop = stse_platform_i2c_send_stop;
-    pStseHandler->io.IOLineGet = NULL;
     pStseHandler->io.BusWake = stse_platform_i2c_wake;
+#endif /* STSE_CONF_STSAFE_A_SUPPORT || (STSE_CONF_STSAFE_L_SUPPORT && defined(STSE_CONF_USE_I2C) */
+    pStseHandler->io.IOLineGet = NULL;
     pStseHandler->io.BusRecovery = NULL;
     pStseHandler->io.PowerLineOff = stse_platform_power_off;
     pStseHandler->io.PowerLineOn = stse_platform_power_on;