| /** |
| * \file doc_rng.h |
| * |
| * \brief Random number generator (RNG) module documentation file. |
| */ |
| /* |
| * |
| * Copyright The Mbed TLS Contributors |
| * 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. |
| */ |
| |
| /** |
| * @addtogroup rng_module Random number generator (RNG) module |
| * |
| * The Random number generator (RNG) module provides random number |
| * generation, see \c mbedtls_ctr_drbg_random(). |
| * |
| * The block-cipher counter-mode based deterministic random |
| * bit generator (CTR_DBRG) as specified in NIST SP800-90. It needs an external |
| * source of entropy. For these purposes \c mbedtls_entropy_func() can be used. |
| * This is an implementation based on a simple entropy accumulator design. |
| * |
| * The other number generator that is included is less strong and uses the |
| * HAVEGE (HArdware Volatile Entropy Gathering and Expansion) software heuristic |
| * which considered unsafe for primary usage, but provides additional random |
| * to the entropy pool if enables. |
| * |
| * Meaning that there seems to be no practical algorithm that can guess |
| * the next bit with a probability larger than 1/2 in an output sequence. |
| * |
| * This module can be used to generate random numbers. |
| */ |
