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entropy_poll.h File Reference
Functions

entropy_poll.h File Reference

Platform-specific and custom entropy polling functions. More...

Go to the source code of this file.

Functions

int mbedtls_null_entropy_poll (void *data, unsigned char *output, size_t len, size_t *olen)
 Entropy poll callback that provides 0 entropy.
int mbedtls_platform_entropy_poll (void *data, unsigned char *output, size_t len, size_t *olen)
 Platform-specific entropy poll callback.
int mbedtls_havege_poll (void *data, unsigned char *output, size_t len, size_t *olen)
 HAVEGE based entropy poll callback.
int mbedtls_hardclock_poll (void *data, unsigned char *output, size_t len, size_t *olen)
 mbedtls_timing_hardclock-based entropy poll callback
int mbedtls_hardware_poll (void *data, unsigned char *output, size_t len, size_t *olen)
 Entropy poll callback for a hardware source.
int mbedtls_nv_seed_poll (void *data, unsigned char *output, size_t len, size_t *olen)
 Entropy poll callback for a non-volatile seed file.

Detailed Description

Platform-specific and custom entropy polling functions.

Copyright (C) 2006-2016, 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)

Definition in file entropy_poll.h.

Function Documentation

int mbedtls_hardclock_poll ( void *  data,
unsigned char *  output,
size_t  len,
size_t *  olen 
)

mbedtls_timing_hardclock-based entropy poll callback

Definition at line 212 of file entropy_poll.c.

int mbedtls_hardware_poll ( void *  data,
unsigned char *  output,
size_t  len,
size_t *  olen 
)

Entropy poll callback for a hardware source.

Warning:
This is not provided by mbed TLS! See MBEDTLS_ENTROPY_HARDWARE_ALT in config.h.
Note:
This must accept NULL as its first argument.

Definition at line 21 of file mbed_trng.c.

int mbedtls_havege_poll ( void *  data,
unsigned char *  output,
size_t  len,
size_t *  olen 
)

HAVEGE based entropy poll callback.

Requires an HAVEGE state as its data pointer.

Definition at line 230 of file entropy_poll.c.

int mbedtls_null_entropy_poll ( void *  data,
unsigned char *  output,
size_t  len,
size_t *  olen 
)

Entropy poll callback that provides 0 entropy.

Definition at line 195 of file entropy_poll.c.

int mbedtls_nv_seed_poll ( void *  data,
unsigned char *  output,
size_t  len,
size_t *  olen 
)

Entropy poll callback for a non-volatile seed file.

Note:
This must accept NULL as its first argument.

Definition at line 246 of file entropy_poll.c.

int mbedtls_platform_entropy_poll ( void *  data,
unsigned char *  output,
size_t  len,
size_t *  olen 
)

Platform-specific entropy poll callback.

Definition at line 150 of file entropy_poll.c.

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