| /** |
| * \file ssl_cookie.h |
| * |
| * \brief DTLS cookie callbacks implementation |
| * |
| * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| * not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| * This file is part of mbed TLS (https://tls.mbed.org) |
| */ |
| #ifndef MBEDTLS_SSL_COOKIE_H |
| #define MBEDTLS_SSL_COOKIE_H |
| |
| #include "ssl.h" |
| |
| #if defined(MBEDTLS_THREADING_C) |
| #include "threading.h" |
| #endif |
| |
| /** |
| * \name SECTION: Module settings |
| * |
| * The configuration options you can set for this module are in this section. |
| * Either change them in config.h or define them on the compiler command line. |
| * \{ |
| */ |
| #ifndef MBEDTLS_SSL_COOKIE_TIMEOUT |
| #define MBEDTLS_SSL_COOKIE_TIMEOUT 60 /**< Default expiration delay of DTLS cookies, in seconds if HAVE_TIME, or in number of cookies issued */ |
| #endif |
| |
| /* \} name SECTION: Module settings */ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** |
| * \brief Context for the default cookie functions. |
| */ |
| typedef struct |
| { |
| mbedtls_md_context_t hmac_ctx; /*!< context for the HMAC portion */ |
| #if !defined(MBEDTLS_HAVE_TIME) |
| unsigned long serial; /*!< serial number for expiration */ |
| #endif |
| unsigned long timeout; /*!< timeout delay, in seconds if HAVE_TIME, |
| or in number of tickets issued */ |
| |
| #if defined(MBEDTLS_THREADING_C) |
| mbedtls_threading_mutex_t mutex; |
| #endif |
| } mbedtls_ssl_cookie_ctx; |
| |
| /** |
| * \brief Initialize cookie context |
| */ |
| void mbedtls_ssl_cookie_init( mbedtls_ssl_cookie_ctx *ctx ); |
| |
| /** |
| * \brief Setup cookie context (generate keys) |
| */ |
| int mbedtls_ssl_cookie_setup( mbedtls_ssl_cookie_ctx *ctx, |
| int (*f_rng)(void *, unsigned char *, size_t), |
| void *p_rng ); |
| |
| /** |
| * \brief Set expiration delay for cookies |
| * (Default MBEDTLS_SSL_COOKIE_TIMEOUT) |
| * |
| * \param ctx Cookie contex |
| * \param delay Delay, in seconds if HAVE_TIME, or in number of cookies |
| * issued in the meantime. |
| * 0 to disable expiration (NOT recommended) |
| */ |
| void mbedtls_ssl_cookie_set_timeout( mbedtls_ssl_cookie_ctx *ctx, unsigned long delay ); |
| |
| /** |
| * \brief Free cookie context |
| */ |
| void mbedtls_ssl_cookie_free( mbedtls_ssl_cookie_ctx *ctx ); |
| |
| /** |
| * \brief Generate cookie, see \c mbedtls_ssl_cookie_write_t |
| */ |
| mbedtls_ssl_cookie_write_t mbedtls_ssl_cookie_write; |
| |
| /** |
| * \brief Verify cookie, see \c mbedtls_ssl_cookie_write_t |
| */ |
| mbedtls_ssl_cookie_check_t mbedtls_ssl_cookie_check; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* ssl_cookie.h */ |