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143 lines
4.0 KiB
C
143 lines
4.0 KiB
C
/*
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* SPDX-FileCopyrightText: 2018-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <esp_err.h>
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#include "esp_event.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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ESP_EVENT_DECLARE_BASE(PROTOCOMM_SECURITY_SESSION_EVENT);
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/**
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* @brief Events generated by the protocomm security layer
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*
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* These events are generated while establishing secured session.
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*/
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typedef enum {
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PROTOCOMM_SECURITY_SESSION_SETUP_OK, /**< Secured session established successfully */
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PROTOCOMM_SECURITY_SESSION_INVALID_SECURITY_PARAMS, /**< Received invalid (NULL) security parameters (username / client public-key) */
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PROTOCOMM_SECURITY_SESSION_CREDENTIALS_MISMATCH, /**< Received incorrect credentials (username / PoP) */
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} protocomm_security_session_event_t;
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/**
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* @brief Protocomm Security 1 parameters: Proof Of Possession
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*/
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typedef struct protocomm_security1_params {
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/**
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* Pointer to buffer containing the proof of possession data
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*/
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const uint8_t *data;
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/**
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* Length (in bytes) of the proof of possession data
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*/
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uint16_t len;
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} protocomm_security1_params_t;
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typedef protocomm_security1_params_t protocomm_security_pop_t __attribute__((deprecated("Use protocomm_security1_params_t instead")));
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/**
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* @brief Protocomm Security 2 parameters: Salt and Verifier
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*
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*/
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typedef struct protocomm_security2_params {
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/**
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* Pointer to the buffer containing the salt
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*/
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const char *salt;
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/**
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* Length (in bytes) of the salt
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*/
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uint16_t salt_len;
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/**
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* Pointer to the buffer containing the verifier
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*/
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const char *verifier;
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/**
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* Length (in bytes) of the verifier
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*/
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uint16_t verifier_len;
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} protocomm_security2_params_t;
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typedef void * protocomm_security_handle_t;
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/**
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* @brief Protocomm security object structure.
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*
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* The member functions are used for implementing secure
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* protocomm sessions.
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*
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* @note This structure should not have any dynamic
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* members to allow re-entrancy
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*/
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typedef struct protocomm_security {
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/**
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* Unique version number of security implementation
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*/
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int ver;
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/**
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* Function for initializing/allocating security
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* infrastructure
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*/
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esp_err_t (*init)(protocomm_security_handle_t *handle);
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/**
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* Function for deallocating security infrastructure
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*/
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esp_err_t (*cleanup)(protocomm_security_handle_t handle);
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/**
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* Starts new secure transport session with specified ID
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*/
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esp_err_t (*new_transport_session)(protocomm_security_handle_t handle,
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uint32_t session_id);
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/**
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* Closes a secure transport session with specified ID
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*/
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esp_err_t (*close_transport_session)(protocomm_security_handle_t handle,
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uint32_t session_id);
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/**
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* Handler function for authenticating connection
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* request and establishing secure session
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*/
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esp_err_t (*security_req_handler)(protocomm_security_handle_t handle,
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const void *sec_params,
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uint32_t session_id,
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const uint8_t *inbuf, ssize_t inlen,
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uint8_t **outbuf, ssize_t *outlen,
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void *priv_data);
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/**
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* Function which implements the encryption algorithm
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*/
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esp_err_t (*encrypt)(protocomm_security_handle_t handle,
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uint32_t session_id,
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const uint8_t *inbuf, ssize_t inlen,
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uint8_t **outbuf, ssize_t *outlen);
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/**
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* Function which implements the decryption algorithm
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*/
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esp_err_t (*decrypt)(protocomm_security_handle_t handle,
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uint32_t session_id,
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const uint8_t *inbuf, ssize_t inlen,
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uint8_t **outbuf, ssize_t *outlen);
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} protocomm_security_t;
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#ifdef __cplusplus
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}
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#endif
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