Jan Korycan / WNCInterface

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Dependencies:   WncControllerK64F

Fork of WNCInterface by Jan Korycan

mbedtls/mbedtls/havege.h@33:f41d199375f0, 2018-04-05 (annotated)

Committer:
korycanjan
Date:
Thu Apr 05 03:17:03 2018 +0000
Revision:
33:f41d199375f0
Parent:
12:0071cb144c7a 
Better stability

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JMF 12:0071cb144c7a 1 /**
JMF 12:0071cb144c7a 2 * \file havege.h
JMF 12:0071cb144c7a 3 *
JMF 12:0071cb144c7a 4 * \brief HAVEGE: HArdware Volatile Entropy Gathering and Expansion
JMF 12:0071cb144c7a 5 *
JMF 12:0071cb144c7a 6 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
JMF 12:0071cb144c7a 7 * SPDX-License-Identifier: Apache-2.0
JMF 12:0071cb144c7a 8 *
JMF 12:0071cb144c7a 9 * Licensed under the Apache License, Version 2.0 (the "License"); you may
JMF 12:0071cb144c7a 10 * not use this file except in compliance with the License.
JMF 12:0071cb144c7a 11 * You may obtain a copy of the License at
JMF 12:0071cb144c7a 12 *
JMF 12:0071cb144c7a 13 * http://www.apache.org/licenses/LICENSE-2.0
JMF 12:0071cb144c7a 14 *
JMF 12:0071cb144c7a 15 * Unless required by applicable law or agreed to in writing, software
JMF 12:0071cb144c7a 16 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
JMF 12:0071cb144c7a 17 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
JMF 12:0071cb144c7a 18 * See the License for the specific language governing permissions and
JMF 12:0071cb144c7a 19 * limitations under the License.
JMF 12:0071cb144c7a 20 *
JMF 12:0071cb144c7a 21 * This file is part of mbed TLS (https://tls.mbed.org)
JMF 12:0071cb144c7a 22 */
JMF 12:0071cb144c7a 23 #ifndef MBEDTLS_HAVEGE_H
JMF 12:0071cb144c7a 24 #define MBEDTLS_HAVEGE_H
JMF 12:0071cb144c7a 25
JMF 12:0071cb144c7a 26 #include <stddef.h>
JMF 12:0071cb144c7a 27
JMF 12:0071cb144c7a 28 #define MBEDTLS_HAVEGE_COLLECT_SIZE 1024
JMF 12:0071cb144c7a 29
JMF 12:0071cb144c7a 30 #ifdef __cplusplus
JMF 12:0071cb144c7a 31 extern "C" {
JMF 12:0071cb144c7a 32 #endif
JMF 12:0071cb144c7a 33
JMF 12:0071cb144c7a 34 /**
JMF 12:0071cb144c7a 35 * \brief HAVEGE state structure
JMF 12:0071cb144c7a 36 */
JMF 12:0071cb144c7a 37 typedef struct
JMF 12:0071cb144c7a 38 {
JMF 12:0071cb144c7a 39 int PT1, PT2, offset[2];
JMF 12:0071cb144c7a 40 int pool[MBEDTLS_HAVEGE_COLLECT_SIZE];
JMF 12:0071cb144c7a 41 int WALK[8192];
JMF 12:0071cb144c7a 42 }
JMF 12:0071cb144c7a 43 mbedtls_havege_state;
JMF 12:0071cb144c7a 44
JMF 12:0071cb144c7a 45 /**
JMF 12:0071cb144c7a 46 * \brief HAVEGE initialization
JMF 12:0071cb144c7a 47 *
JMF 12:0071cb144c7a 48 * \param hs HAVEGE state to be initialized
JMF 12:0071cb144c7a 49 */
JMF 12:0071cb144c7a 50 void mbedtls_havege_init( mbedtls_havege_state *hs );
JMF 12:0071cb144c7a 51
JMF 12:0071cb144c7a 52 /**
JMF 12:0071cb144c7a 53 * \brief Clear HAVEGE state
JMF 12:0071cb144c7a 54 *
JMF 12:0071cb144c7a 55 * \param hs HAVEGE state to be cleared
JMF 12:0071cb144c7a 56 */
JMF 12:0071cb144c7a 57 void mbedtls_havege_free( mbedtls_havege_state *hs );
JMF 12:0071cb144c7a 58
JMF 12:0071cb144c7a 59 /**
JMF 12:0071cb144c7a 60 * \brief HAVEGE rand function
JMF 12:0071cb144c7a 61 *
JMF 12:0071cb144c7a 62 * \param p_rng A HAVEGE state
JMF 12:0071cb144c7a 63 * \param output Buffer to fill
JMF 12:0071cb144c7a 64 * \param len Length of buffer
JMF 12:0071cb144c7a 65 *
JMF 12:0071cb144c7a 66 * \return 0
JMF 12:0071cb144c7a 67 */
JMF 12:0071cb144c7a 68 int mbedtls_havege_random( void *p_rng, unsigned char *output, size_t len );
JMF 12:0071cb144c7a 69
JMF 12:0071cb144c7a 70 #ifdef __cplusplus
JMF 12:0071cb144c7a 71 }
JMF 12:0071cb144c7a 72 #endif
JMF 12:0071cb144c7a 73
JMF 12:0071cb144c7a 74 #endif /* havege.h */