feat: Add session apis in core

Co-authored-by: Vaibhav Sethia <vrockz747@gmail.com>
Co-authored-by: Parnika Gupta <parnika@cypherock.com>

Author: 3 people

apps/manager_app/device_authentication_api.c

@@ -70,9 +70,6 @@
 #include "atca_basic.h"
 #include "device_authentication_api.h"
 
-#define SIGNATURE_SIZE 64
-#define POSTFIX1_SIZE 7
-#define POSTFIX2_SIZE 23
 #define RANDOM_CHALLENGE_SIZE 32
 
 atecc_data_t atecc_data = {0};

apps/manager_app/device_authentication_api.h

@@ -26,6 +26,9 @@
  * MACROS AND DEFINES
  *****************************************************************************/
 #define DEFAULT_ATECC_RETRIES 5
+#define SIGNATURE_SIZE 64
+#define POSTFIX1_SIZE 7
+#define POSTFIX2_SIZE 23
 #define DEVICE_SERIAL_SIZE 32
 
 /*****************************************************************************

common/core/core_api.c

@@ -65,6 +65,7 @@
 #include <core.pb.h>
 
 #include "assert_conf.h"
+#include "core_session.h"
 #include "pb_encode.h"
 #include "status_api.h"
 #include "usb_api.h"
@@ -130,7 +131,6 @@ void send_response_to_host(const uint8_t *msg, const uint32_t size) {
   core_msg.cmd.applet_id = get_applet_id();
 
   send_core_msg(&core_msg, msg, size);
-  return;
 }
 
 void send_core_error_msg_to_host(uint32_t core_error_type) {
@@ -139,7 +139,6 @@ void send_core_error_msg_to_host(uint32_t core_error_type) {
   core_msg.error.type = (core_error_type_t)core_error_type;
 
   send_core_msg(&core_msg, NULL, 0);
-  return;
 }
 
 void send_app_version_list_to_host(
@@ -154,5 +153,54 @@ void send_app_version_list_to_host(
          sizeof(core_app_version_result_response_t));
 
   send_core_msg(&core_msg, NULL, 0);
-  return;
-}
+}
+
+void send_core_session_start_response_to_host(const uint8_t *payload) {
+  core_msg_t core_msg = CORE_MSG_INIT_ZERO;
+  core_msg.which_type = CORE_MSG_SESSION_START_TAG;
+  core_msg.session_start.which_cmd = CORE_SESSION_START_CMD_RESPONSE_TAG;
+  core_msg.session_start.response.which_response =
+      CORE_SESSION_START_RESPONSE_CONFIRMATION_INITIATE_TAG;
+  uint32_t offset = 0;
+  memcpy(core_msg.session_start.response.confirmation_initiate
+             .device_random_public,
+         payload + offset,
+         SESSION_PUB_KEY_SIZE);
+  offset += SESSION_PUB_KEY_SIZE;
+  memcpy(core_msg.session_start.response.confirmation_initiate.device_id,
+         payload + offset,
+         DEVICE_SERIAL_SIZE);
+  offset += DEVICE_SERIAL_SIZE;
+  memcpy(core_msg.session_start.response.confirmation_initiate.signature,
+         payload + offset,
+         SIGNATURE_SIZE);
+  offset += SIGNATURE_SIZE;
+  memcpy(core_msg.session_start.response.confirmation_initiate.postfix1,
+         payload + offset,
+         POSTFIX1_SIZE);
+  offset += POSTFIX1_SIZE;
+  memcpy(core_msg.session_start.response.confirmation_initiate.postfix2,
+         payload + offset,
+         POSTFIX2_SIZE);
+
+  send_core_msg(&core_msg, NULL, 0);
+}
+
+void send_core_session_start_ack_to_host() {
+  core_msg_t core_msg = CORE_MSG_INIT_ZERO;
+  core_msg.which_type = CORE_MSG_SESSION_START_TAG;
+  core_msg.session_start.which_cmd = CORE_SESSION_START_CMD_RESPONSE_TAG;
+  core_msg.session_start.response.which_response =
+      CORE_SESSION_START_RESPONSE_CONFIRMATION_START_TAG;
+  send_core_msg(&core_msg, NULL, 0);
+}
+
+void send_core_session_close_response_to_host() {
+  core_msg_t core_msg = CORE_MSG_INIT_ZERO;
+  core_msg.which_type = CORE_MSG_SESSION_CLOSE_TAG;
+  core_msg.session_close.which_cmd = CORE_SESSION_CLOSE_CMD_RESPONSE_TAG;
+  core_msg.session_close.response.which_response =
+      CORE_SESSION_CLOSE_RESPONSE_CLEAR_TAG;
+
+  send_core_msg(&core_msg, NULL, 0);
+}

common/core/core_api.h

@@ -49,7 +49,7 @@ void send_response_to_host(const uint8_t *msg, const uint32_t size);
  *
  * @param which_error The enum type of the error which needs to be sent
  */
-void send_core_error_msg_to_host(uint32_t which_error);
+void send_core_error_msg_to_host(uint32_t core_error_type);
 
 /**
  * @brief Helper API for core to send a response containing a list of
@@ -60,4 +60,10 @@ void send_core_error_msg_to_host(uint32_t which_error);
  */
 void send_app_version_list_to_host(
     const core_app_version_result_response_t *version_resp);
-#endif /* CORE_API_H */
+
+void send_core_session_start_response_to_host(const uint8_t *payload);
+
+void send_core_session_start_ack_to_host();
+
+void send_core_session_close_response_to_host();
+#endif /* CORE_API_H */