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- /**
- * @file
- * Random number generator (RNG) module documentation file.
- *
- * 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)
- */
- /**
- * @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.
- */
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