Austin Blackstone / Mbed 2 deprecated client-lwip-lightswitch-demo-expanded

mbed client lightswitch demo

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by Austin Blackstone

mbedtls/mbedtls/ctr_drbg.h@11:cada08fc8a70, 2016-06-09 (annotated)

Committer:
mbedAustin
Date:
Thu Jun 09 17:08:36 2016 +0000
Revision:
11:cada08fc8a70
Commit for public Consumption

Who changed what in which revision?

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mbedAustin 11:cada08fc8a70 1 /**
mbedAustin 11:cada08fc8a70 2 * \file ctr_drbg.h
mbedAustin 11:cada08fc8a70 3 *
mbedAustin 11:cada08fc8a70 4 * \brief CTR_DRBG based on AES-256 (NIST SP 800-90)
mbedAustin 11:cada08fc8a70 5 *
mbedAustin 11:cada08fc8a70 6 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
mbedAustin 11:cada08fc8a70 7 * SPDX-License-Identifier: Apache-2.0
mbedAustin 11:cada08fc8a70 8 *
mbedAustin 11:cada08fc8a70 9 * Licensed under the Apache License, Version 2.0 (the "License"); you may
mbedAustin 11:cada08fc8a70 10 * not use this file except in compliance with the License.
mbedAustin 11:cada08fc8a70 11 * You may obtain a copy of the License at
mbedAustin 11:cada08fc8a70 12 *
mbedAustin 11:cada08fc8a70 13 * http://www.apache.org/licenses/LICENSE-2.0
mbedAustin 11:cada08fc8a70 14 *
mbedAustin 11:cada08fc8a70 15 * Unless required by applicable law or agreed to in writing, software
mbedAustin 11:cada08fc8a70 16 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
mbedAustin 11:cada08fc8a70 17 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbedAustin 11:cada08fc8a70 18 * See the License for the specific language governing permissions and
mbedAustin 11:cada08fc8a70 19 * limitations under the License.
mbedAustin 11:cada08fc8a70 20 *
mbedAustin 11:cada08fc8a70 21 * This file is part of mbed TLS (https://tls.mbed.org)
mbedAustin 11:cada08fc8a70 22 */
mbedAustin 11:cada08fc8a70 23 #ifndef MBEDTLS_CTR_DRBG_H
mbedAustin 11:cada08fc8a70 24 #define MBEDTLS_CTR_DRBG_H
mbedAustin 11:cada08fc8a70 25
mbedAustin 11:cada08fc8a70 26 #include "aes.h"
mbedAustin 11:cada08fc8a70 27
mbedAustin 11:cada08fc8a70 28 #if defined(MBEDTLS_THREADING_C)
mbedAustin 11:cada08fc8a70 29 #include "mbedtls/threading.h"
mbedAustin 11:cada08fc8a70 30 #endif
mbedAustin 11:cada08fc8a70 31
mbedAustin 11:cada08fc8a70 32 #define MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED -0x0034 /**< The entropy source failed. */
mbedAustin 11:cada08fc8a70 33 #define MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG -0x0036 /**< Too many random requested in single call. */
mbedAustin 11:cada08fc8a70 34 #define MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG -0x0038 /**< Input too large (Entropy + additional). */
mbedAustin 11:cada08fc8a70 35 #define MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR -0x003A /**< Read/write error in file. */
mbedAustin 11:cada08fc8a70 36
mbedAustin 11:cada08fc8a70 37 #define MBEDTLS_CTR_DRBG_BLOCKSIZE 16 /**< Block size used by the cipher */
mbedAustin 11:cada08fc8a70 38 #define MBEDTLS_CTR_DRBG_KEYSIZE 32 /**< Key size used by the cipher */
mbedAustin 11:cada08fc8a70 39 #define MBEDTLS_CTR_DRBG_KEYBITS ( MBEDTLS_CTR_DRBG_KEYSIZE * 8 )
mbedAustin 11:cada08fc8a70 40 #define MBEDTLS_CTR_DRBG_SEEDLEN ( MBEDTLS_CTR_DRBG_KEYSIZE + MBEDTLS_CTR_DRBG_BLOCKSIZE )
mbedAustin 11:cada08fc8a70 41 /**< The seed length (counter + AES key) */
mbedAustin 11:cada08fc8a70 42
mbedAustin 11:cada08fc8a70 43 /**
mbedAustin 11:cada08fc8a70 44 * \name SECTION: Module settings
mbedAustin 11:cada08fc8a70 45 *
mbedAustin 11:cada08fc8a70 46 * The configuration options you can set for this module are in this section.
mbedAustin 11:cada08fc8a70 47 * Either change them in config.h or define them on the compiler command line.
mbedAustin 11:cada08fc8a70 48 * \{
mbedAustin 11:cada08fc8a70 49 */
mbedAustin 11:cada08fc8a70 50
mbedAustin 11:cada08fc8a70 51 #if !defined(MBEDTLS_CTR_DRBG_ENTROPY_LEN)
mbedAustin 11:cada08fc8a70 52 #if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256)
mbedAustin 11:cada08fc8a70 53 #define MBEDTLS_CTR_DRBG_ENTROPY_LEN 48 /**< Amount of entropy used per seed by default (48 with SHA-512, 32 with SHA-256) */
mbedAustin 11:cada08fc8a70 54 #else
mbedAustin 11:cada08fc8a70 55 #define MBEDTLS_CTR_DRBG_ENTROPY_LEN 32 /**< Amount of entropy used per seed by default (48 with SHA-512, 32 with SHA-256) */
mbedAustin 11:cada08fc8a70 56 #endif
mbedAustin 11:cada08fc8a70 57 #endif
mbedAustin 11:cada08fc8a70 58
mbedAustin 11:cada08fc8a70 59 #if !defined(MBEDTLS_CTR_DRBG_RESEED_INTERVAL)
mbedAustin 11:cada08fc8a70 60 #define MBEDTLS_CTR_DRBG_RESEED_INTERVAL 10000 /**< Interval before reseed is performed by default */
mbedAustin 11:cada08fc8a70 61 #endif
mbedAustin 11:cada08fc8a70 62
mbedAustin 11:cada08fc8a70 63 #if !defined(MBEDTLS_CTR_DRBG_MAX_INPUT)
mbedAustin 11:cada08fc8a70 64 #define MBEDTLS_CTR_DRBG_MAX_INPUT 256 /**< Maximum number of additional input bytes */
mbedAustin 11:cada08fc8a70 65 #endif
mbedAustin 11:cada08fc8a70 66
mbedAustin 11:cada08fc8a70 67 #if !defined(MBEDTLS_CTR_DRBG_MAX_REQUEST)
mbedAustin 11:cada08fc8a70 68 #define MBEDTLS_CTR_DRBG_MAX_REQUEST 1024 /**< Maximum number of requested bytes per call */
mbedAustin 11:cada08fc8a70 69 #endif
mbedAustin 11:cada08fc8a70 70
mbedAustin 11:cada08fc8a70 71 #if !defined(MBEDTLS_CTR_DRBG_MAX_SEED_INPUT)
mbedAustin 11:cada08fc8a70 72 #define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT 384 /**< Maximum size of (re)seed buffer */
mbedAustin 11:cada08fc8a70 73 #endif
mbedAustin 11:cada08fc8a70 74
mbedAustin 11:cada08fc8a70 75 /* \} name SECTION: Module settings */
mbedAustin 11:cada08fc8a70 76
mbedAustin 11:cada08fc8a70 77 #define MBEDTLS_CTR_DRBG_PR_OFF 0 /**< No prediction resistance */
mbedAustin 11:cada08fc8a70 78 #define MBEDTLS_CTR_DRBG_PR_ON 1 /**< Prediction resistance enabled */
mbedAustin 11:cada08fc8a70 79
mbedAustin 11:cada08fc8a70 80 #ifdef __cplusplus
mbedAustin 11:cada08fc8a70 81 extern "C" {
mbedAustin 11:cada08fc8a70 82 #endif
mbedAustin 11:cada08fc8a70 83
mbedAustin 11:cada08fc8a70 84 /**
mbedAustin 11:cada08fc8a70 85 * \brief CTR_DRBG context structure
mbedAustin 11:cada08fc8a70 86 */
mbedAustin 11:cada08fc8a70 87 typedef struct
mbedAustin 11:cada08fc8a70 88 {
mbedAustin 11:cada08fc8a70 89 unsigned char counter[16]; /*!< counter (V) */
mbedAustin 11:cada08fc8a70 90 int reseed_counter; /*!< reseed counter */
mbedAustin 11:cada08fc8a70 91 int prediction_resistance; /*!< enable prediction resistance (Automatic
mbedAustin 11:cada08fc8a70 92 reseed before every random generation) */
mbedAustin 11:cada08fc8a70 93 size_t entropy_len; /*!< amount of entropy grabbed on each
mbedAustin 11:cada08fc8a70 94 (re)seed */
mbedAustin 11:cada08fc8a70 95 int reseed_interval; /*!< reseed interval */
mbedAustin 11:cada08fc8a70 96
mbedAustin 11:cada08fc8a70 97 mbedtls_aes_context aes_ctx; /*!< AES context */
mbedAustin 11:cada08fc8a70 98
mbedAustin 11:cada08fc8a70 99 /*
mbedAustin 11:cada08fc8a70 100 * Callbacks (Entropy)
mbedAustin 11:cada08fc8a70 101 */
mbedAustin 11:cada08fc8a70 102 int (*f_entropy)(void *, unsigned char *, size_t);
mbedAustin 11:cada08fc8a70 103
mbedAustin 11:cada08fc8a70 104 void *p_entropy; /*!< context for the entropy function */
mbedAustin 11:cada08fc8a70 105
mbedAustin 11:cada08fc8a70 106 #if defined(MBEDTLS_THREADING_C)
mbedAustin 11:cada08fc8a70 107 mbedtls_threading_mutex_t mutex;
mbedAustin 11:cada08fc8a70 108 #endif
mbedAustin 11:cada08fc8a70 109 }
mbedAustin 11:cada08fc8a70 110 mbedtls_ctr_drbg_context;
mbedAustin 11:cada08fc8a70 111
mbedAustin 11:cada08fc8a70 112 /**
mbedAustin 11:cada08fc8a70 113 * \brief CTR_DRBG context initialization
mbedAustin 11:cada08fc8a70 114 * Makes the context ready for mbedtls_ctr_drbg_seed() or
mbedAustin 11:cada08fc8a70 115 * mbedtls_ctr_drbg_free().
mbedAustin 11:cada08fc8a70 116 *
mbedAustin 11:cada08fc8a70 117 * \param ctx CTR_DRBG context to be initialized
mbedAustin 11:cada08fc8a70 118 */
mbedAustin 11:cada08fc8a70 119 void mbedtls_ctr_drbg_init( mbedtls_ctr_drbg_context *ctx );
mbedAustin 11:cada08fc8a70 120
mbedAustin 11:cada08fc8a70 121 /**
mbedAustin 11:cada08fc8a70 122 * \brief CTR_DRBG initial seeding
mbedAustin 11:cada08fc8a70 123 * Seed and setup entropy source for future reseeds.
mbedAustin 11:cada08fc8a70 124 *
mbedAustin 11:cada08fc8a70 125 * Note: Personalization data can be provided in addition to the more generic
mbedAustin 11:cada08fc8a70 126 * entropy source to make this instantiation as unique as possible.
mbedAustin 11:cada08fc8a70 127 *
mbedAustin 11:cada08fc8a70 128 * \param ctx CTR_DRBG context to be seeded
mbedAustin 11:cada08fc8a70 129 * \param f_entropy Entropy callback (p_entropy, buffer to fill, buffer
mbedAustin 11:cada08fc8a70 130 * length)
mbedAustin 11:cada08fc8a70 131 * \param p_entropy Entropy context
mbedAustin 11:cada08fc8a70 132 * \param custom Personalization data (Device specific identifiers)
mbedAustin 11:cada08fc8a70 133 * (Can be NULL)
mbedAustin 11:cada08fc8a70 134 * \param len Length of personalization data
mbedAustin 11:cada08fc8a70 135 *
mbedAustin 11:cada08fc8a70 136 * \return 0 if successful, or
mbedAustin 11:cada08fc8a70 137 * MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED
mbedAustin 11:cada08fc8a70 138 */
mbedAustin 11:cada08fc8a70 139 int mbedtls_ctr_drbg_seed( mbedtls_ctr_drbg_context *ctx,
mbedAustin 11:cada08fc8a70 140 int (*f_entropy)(void *, unsigned char *, size_t),
mbedAustin 11:cada08fc8a70 141 void *p_entropy,
mbedAustin 11:cada08fc8a70 142 const unsigned char *custom,
mbedAustin 11:cada08fc8a70 143 size_t len );
mbedAustin 11:cada08fc8a70 144
mbedAustin 11:cada08fc8a70 145 /**
mbedAustin 11:cada08fc8a70 146 * \brief Clear CTR_CRBG context data
mbedAustin 11:cada08fc8a70 147 *
mbedAustin 11:cada08fc8a70 148 * \param ctx CTR_DRBG context to clear
mbedAustin 11:cada08fc8a70 149 */
mbedAustin 11:cada08fc8a70 150 void mbedtls_ctr_drbg_free( mbedtls_ctr_drbg_context *ctx );
mbedAustin 11:cada08fc8a70 151
mbedAustin 11:cada08fc8a70 152 /**
mbedAustin 11:cada08fc8a70 153 * \brief Enable / disable prediction resistance (Default: Off)
mbedAustin 11:cada08fc8a70 154 *
mbedAustin 11:cada08fc8a70 155 * Note: If enabled, entropy is used for ctx->entropy_len before each call!
mbedAustin 11:cada08fc8a70 156 * Only use this if you have ample supply of good entropy!
mbedAustin 11:cada08fc8a70 157 *
mbedAustin 11:cada08fc8a70 158 * \param ctx CTR_DRBG context
mbedAustin 11:cada08fc8a70 159 * \param resistance MBEDTLS_CTR_DRBG_PR_ON or MBEDTLS_CTR_DRBG_PR_OFF
mbedAustin 11:cada08fc8a70 160 */
mbedAustin 11:cada08fc8a70 161 void mbedtls_ctr_drbg_set_prediction_resistance( mbedtls_ctr_drbg_context *ctx,
mbedAustin 11:cada08fc8a70 162 int resistance );
mbedAustin 11:cada08fc8a70 163
mbedAustin 11:cada08fc8a70 164 /**
mbedAustin 11:cada08fc8a70 165 * \brief Set the amount of entropy grabbed on each (re)seed
mbedAustin 11:cada08fc8a70 166 * (Default: MBEDTLS_CTR_DRBG_ENTROPY_LEN)
mbedAustin 11:cada08fc8a70 167 *
mbedAustin 11:cada08fc8a70 168 * \param ctx CTR_DRBG context
mbedAustin 11:cada08fc8a70 169 * \param len Amount of entropy to grab
mbedAustin 11:cada08fc8a70 170 */
mbedAustin 11:cada08fc8a70 171 void mbedtls_ctr_drbg_set_entropy_len( mbedtls_ctr_drbg_context *ctx,
mbedAustin 11:cada08fc8a70 172 size_t len );
mbedAustin 11:cada08fc8a70 173
mbedAustin 11:cada08fc8a70 174 /**
mbedAustin 11:cada08fc8a70 175 * \brief Set the reseed interval
mbedAustin 11:cada08fc8a70 176 * (Default: MBEDTLS_CTR_DRBG_RESEED_INTERVAL)
mbedAustin 11:cada08fc8a70 177 *
mbedAustin 11:cada08fc8a70 178 * \param ctx CTR_DRBG context
mbedAustin 11:cada08fc8a70 179 * \param interval Reseed interval
mbedAustin 11:cada08fc8a70 180 */
mbedAustin 11:cada08fc8a70 181 void mbedtls_ctr_drbg_set_reseed_interval( mbedtls_ctr_drbg_context *ctx,
mbedAustin 11:cada08fc8a70 182 int interval );
mbedAustin 11:cada08fc8a70 183
mbedAustin 11:cada08fc8a70 184 /**
mbedAustin 11:cada08fc8a70 185 * \brief CTR_DRBG reseeding (extracts data from entropy source)
mbedAustin 11:cada08fc8a70 186 *
mbedAustin 11:cada08fc8a70 187 * \param ctx CTR_DRBG context
mbedAustin 11:cada08fc8a70 188 * \param additional Additional data to add to state (Can be NULL)
mbedAustin 11:cada08fc8a70 189 * \param len Length of additional data
mbedAustin 11:cada08fc8a70 190 *
mbedAustin 11:cada08fc8a70 191 * \return 0 if successful, or
mbedAustin 11:cada08fc8a70 192 * MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED
mbedAustin 11:cada08fc8a70 193 */
mbedAustin 11:cada08fc8a70 194 int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx,
mbedAustin 11:cada08fc8a70 195 const unsigned char *additional, size_t len );
mbedAustin 11:cada08fc8a70 196
mbedAustin 11:cada08fc8a70 197 /**
mbedAustin 11:cada08fc8a70 198 * \brief CTR_DRBG update state
mbedAustin 11:cada08fc8a70 199 *
mbedAustin 11:cada08fc8a70 200 * \param ctx CTR_DRBG context
mbedAustin 11:cada08fc8a70 201 * \param additional Additional data to update state with
mbedAustin 11:cada08fc8a70 202 * \param add_len Length of additional data
mbedAustin 11:cada08fc8a70 203 *
mbedAustin 11:cada08fc8a70 204 * \note If add_len is greater than MBEDTLS_CTR_DRBG_MAX_SEED_INPUT,
mbedAustin 11:cada08fc8a70 205 * only the first MBEDTLS_CTR_DRBG_MAX_SEED_INPUT bytes are used,
mbedAustin 11:cada08fc8a70 206 * the remaining ones are silently discarded.
mbedAustin 11:cada08fc8a70 207 */
mbedAustin 11:cada08fc8a70 208 void mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx,
mbedAustin 11:cada08fc8a70 209 const unsigned char *additional, size_t add_len );
mbedAustin 11:cada08fc8a70 210
mbedAustin 11:cada08fc8a70 211 /**
mbedAustin 11:cada08fc8a70 212 * \brief CTR_DRBG generate random with additional update input
mbedAustin 11:cada08fc8a70 213 *
mbedAustin 11:cada08fc8a70 214 * Note: Automatically reseeds if reseed_counter is reached.
mbedAustin 11:cada08fc8a70 215 *
mbedAustin 11:cada08fc8a70 216 * \param p_rng CTR_DRBG context
mbedAustin 11:cada08fc8a70 217 * \param output Buffer to fill
mbedAustin 11:cada08fc8a70 218 * \param output_len Length of the buffer
mbedAustin 11:cada08fc8a70 219 * \param additional Additional data to update with (Can be NULL)
mbedAustin 11:cada08fc8a70 220 * \param add_len Length of additional data
mbedAustin 11:cada08fc8a70 221 *
mbedAustin 11:cada08fc8a70 222 * \return 0 if successful, or
mbedAustin 11:cada08fc8a70 223 * MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED, or
mbedAustin 11:cada08fc8a70 224 * MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG
mbedAustin 11:cada08fc8a70 225 */
mbedAustin 11:cada08fc8a70 226 int mbedtls_ctr_drbg_random_with_add( void *p_rng,
mbedAustin 11:cada08fc8a70 227 unsigned char *output, size_t output_len,
mbedAustin 11:cada08fc8a70 228 const unsigned char *additional, size_t add_len );
mbedAustin 11:cada08fc8a70 229
mbedAustin 11:cada08fc8a70 230 /**
mbedAustin 11:cada08fc8a70 231 * \brief CTR_DRBG generate random
mbedAustin 11:cada08fc8a70 232 *
mbedAustin 11:cada08fc8a70 233 * Note: Automatically reseeds if reseed_counter is reached.
mbedAustin 11:cada08fc8a70 234 *
mbedAustin 11:cada08fc8a70 235 * \param p_rng CTR_DRBG context
mbedAustin 11:cada08fc8a70 236 * \param output Buffer to fill
mbedAustin 11:cada08fc8a70 237 * \param output_len Length of the buffer
mbedAustin 11:cada08fc8a70 238 *
mbedAustin 11:cada08fc8a70 239 * \return 0 if successful, or
mbedAustin 11:cada08fc8a70 240 * MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED, or
mbedAustin 11:cada08fc8a70 241 * MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG
mbedAustin 11:cada08fc8a70 242 */
mbedAustin 11:cada08fc8a70 243 int mbedtls_ctr_drbg_random( void *p_rng,
mbedAustin 11:cada08fc8a70 244 unsigned char *output, size_t output_len );
mbedAustin 11:cada08fc8a70 245
mbedAustin 11:cada08fc8a70 246 #if defined(MBEDTLS_FS_IO)
mbedAustin 11:cada08fc8a70 247 /**
mbedAustin 11:cada08fc8a70 248 * \brief Write a seed file
mbedAustin 11:cada08fc8a70 249 *
mbedAustin 11:cada08fc8a70 250 * \param ctx CTR_DRBG context
mbedAustin 11:cada08fc8a70 251 * \param path Name of the file
mbedAustin 11:cada08fc8a70 252 *
mbedAustin 11:cada08fc8a70 253 * \return 0 if successful,
mbedAustin 11:cada08fc8a70 254 * MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error, or
mbedAustin 11:cada08fc8a70 255 * MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED
mbedAustin 11:cada08fc8a70 256 */
mbedAustin 11:cada08fc8a70 257 int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path );
mbedAustin 11:cada08fc8a70 258
mbedAustin 11:cada08fc8a70 259 /**
mbedAustin 11:cada08fc8a70 260 * \brief Read and update a seed file. Seed is added to this
mbedAustin 11:cada08fc8a70 261 * instance
mbedAustin 11:cada08fc8a70 262 *
mbedAustin 11:cada08fc8a70 263 * \param ctx CTR_DRBG context
mbedAustin 11:cada08fc8a70 264 * \param path Name of the file
mbedAustin 11:cada08fc8a70 265 *
mbedAustin 11:cada08fc8a70 266 * \return 0 if successful,
mbedAustin 11:cada08fc8a70 267 * MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error,
mbedAustin 11:cada08fc8a70 268 * MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
mbedAustin 11:cada08fc8a70 269 * MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG
mbedAustin 11:cada08fc8a70 270 */
mbedAustin 11:cada08fc8a70 271 int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path );
mbedAustin 11:cada08fc8a70 272 #endif /* MBEDTLS_FS_IO */
mbedAustin 11:cada08fc8a70 273
mbedAustin 11:cada08fc8a70 274 /**
mbedAustin 11:cada08fc8a70 275 * \brief Checkup routine
mbedAustin 11:cada08fc8a70 276 *
mbedAustin 11:cada08fc8a70 277 * \return 0 if successful, or 1 if the test failed
mbedAustin 11:cada08fc8a70 278 */
mbedAustin 11:cada08fc8a70 279 int mbedtls_ctr_drbg_self_test( int verbose );
mbedAustin 11:cada08fc8a70 280
mbedAustin 11:cada08fc8a70 281 /* Internal functions (do not call directly) */
mbedAustin 11:cada08fc8a70 282 int mbedtls_ctr_drbg_seed_entropy_len( mbedtls_ctr_drbg_context *,
mbedAustin 11:cada08fc8a70 283 int (*)(void *, unsigned char *, size_t), void *,
mbedAustin 11:cada08fc8a70 284 const unsigned char *, size_t, size_t );
mbedAustin 11:cada08fc8a70 285
mbedAustin 11:cada08fc8a70 286 #ifdef __cplusplus
mbedAustin 11:cada08fc8a70 287 }
mbedAustin 11:cada08fc8a70 288 #endif
mbedAustin 11:cada08fc8a70 289
mbedAustin 11:cada08fc8a70 290 #endif /* ctr_drbg.h */