| /* |
| * Copyright (c) 2016, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** |
| * @file |
| * This file includes definitions for using mbedTLS. |
| */ |
| |
| #ifndef OT_MBEDTLS_HPP_ |
| #define OT_MBEDTLS_HPP_ |
| |
| #include "openthread-core-config.h" |
| |
| #include <mbedtls/version.h> |
| |
| #include <openthread/instance.h> |
| |
| #include "common/error.hpp" |
| #include "common/non_copyable.hpp" |
| |
| /** |
| * Keep forward-compatibility with Mbed TLS 3.0. |
| * |
| * Direct access to fields of structures declared in public headers is no longer |
| * supported. In Mbed TLS 3, the layout of structures is not considered part of |
| * the stable API, and minor versions (3.1, 3.2, etc.) may add, remove, rename, |
| * reorder or change the type of structure fields. |
| */ |
| #if (MBEDTLS_VERSION_NUMBER < 0x03000000) |
| #ifndef MBEDTLS_PRIVATE |
| #define MBEDTLS_PRIVATE(member) member |
| #endif |
| #endif |
| |
| namespace ot { |
| namespace Crypto { |
| |
| /** |
| * @addtogroup core-security |
| * |
| * @{ |
| * |
| */ |
| |
| /** |
| * This class implements mbedTLS memory. |
| * |
| */ |
| class MbedTls : private NonCopyable |
| { |
| public: |
| /** |
| * This constructor initializes the object. |
| * |
| */ |
| MbedTls(void); |
| |
| /** |
| * This method converts an mbed TLS error to OpenThread error. |
| * |
| * @param[in] aMbedTlsError The mbed TLS error. |
| * |
| * @returns The mapped Error. |
| * |
| */ |
| static Error MapError(int aMbedTlsError); |
| |
| #if !OPENTHREAD_RADIO |
| /** |
| * This function fills a given buffer with cryptographically secure random bytes. |
| * |
| * @param[in] aContext A pointer to arbitrary context. |
| * @param[out] aBuffer A pointer to a buffer to fill with the random bytes. |
| * @param[in] aSize Size of buffer (number of bytes to fill). |
| * |
| * @retval kErrorNone Successfully filled buffer with random values. |
| * |
| */ |
| static int CryptoSecurePrng(void *aContext, unsigned char *aBuffer, size_t aSize); |
| #endif |
| }; |
| |
| /** |
| * @} |
| * |
| */ |
| |
| } // namespace Crypto |
| } // namespace ot |
| |
| #endif // OT_MBEDTLS_HPP_ |