d8723e8b03
given in random(4). This includes updating of the relevant man pages, and no-longer-used harvesting parameters. Ensure that the pseudo-unit-test still does something useful, now also with the "other" algorithm instead of Yarrow. PR: 230870 Reviewed by: cem Approved by: so(delphij,gtetlow) Approved by: re(marius) Differential Revision: https://reviews.freebsd.org/D16898
94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/*-
|
|
* Copyright (c) 2013-2015 Mark R V Murray
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in this position and unchanged.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
|
|
#ifndef UNIT_TEST_H_INCLUDED
|
|
#define UNIT_TEST_H_INCLUDED
|
|
|
|
#ifdef _KERNEL
|
|
#error "Random unit tests cannot be compiled into the kernel."
|
|
#endif
|
|
|
|
#include <sys/types.h>
|
|
#include <inttypes.h>
|
|
#include <stdint.h>
|
|
|
|
#if defined(clang) && __has_builtin(__builtin_readcyclecounter)
|
|
#define rdtsc __builtin_readcyclecounter
|
|
#else /* !clang */
|
|
#if defined(__amd64__) || defined(__i386__)
|
|
static __inline uint64_t
|
|
rdtsc(void)
|
|
{
|
|
uint32_t low, high;
|
|
|
|
__asm __volatile("rdtsc" : "=a" (low), "=d" (high));
|
|
return (low | ((uint64_t)high << 32));
|
|
}
|
|
#else /* __amd64__ || __i386__ */
|
|
#error "No rdtsc() implementation available."
|
|
#endif /* __amd64__ || __i386__ */
|
|
#endif /* !clang */
|
|
|
|
static __inline uint64_t
|
|
get_cyclecount(void)
|
|
{
|
|
|
|
return (rdtsc());
|
|
}
|
|
|
|
#define HARVESTSIZE 2
|
|
#define RANDOM_BLOCKSIZE 16
|
|
|
|
enum random_entropy_source {
|
|
RANDOM_START = 0,
|
|
RANDOM_CACHED = 0,
|
|
ENTROPYSOURCE = 32
|
|
};
|
|
|
|
struct harvest_event {
|
|
uintmax_t he_somecounter; /* fast counter for clock jitter */
|
|
uint32_t he_entropy[HARVESTSIZE];/* some harvested entropy */
|
|
uint8_t he_size; /* harvested entropy byte count */
|
|
uint8_t he_destination; /* destination pool of this entropy */
|
|
enum random_entropy_source he_source; /* origin of the entropy */
|
|
void * he_next; /* next item on the list */
|
|
};
|
|
|
|
struct sysctl_ctx_list;
|
|
|
|
#define CTASSERT(x) _Static_assert(x, "compile-time assertion failed")
|
|
#define KASSERT(exp,msg) do { \
|
|
if (!(exp)) { \
|
|
printf msg; \
|
|
exit(0); \
|
|
} \
|
|
} while (0)
|
|
|
|
#endif /* UNIT_TEST_H_INCLUDED */
|