/*
* Copyright (c) 2019 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
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*/
#ifndef _PRNG_RANDOM_H_
#define _PRNG_RANDOM_H_
__BEGIN_DECLS
#include <corecrypto/cckprng.h>
#ifdef XNU_KERNEL_PRIVATE
void random_cpu_init(int cpu);
#endif /* XNU_KERNEL_PRIVATE */
void register_and_init_prng(struct cckprng_ctx *ctx, const struct cckprng_funcs *funcs);
#include <kern/simple_lock.h>
/* Definitions for boolean PRNG */
#define RANDOM_BOOL_GEN_SEED_COUNT 4
struct bool_gen {
unsigned int seed[RANDOM_BOOL_GEN_SEED_COUNT];
unsigned int state;
decl_simple_lock_data(, lock);
};
extern void random_bool_init(struct bool_gen * bg);
extern void random_bool_gen_entropy(struct bool_gen * bg, unsigned int * buffer, int count);
extern unsigned int random_bool_gen_bits(struct bool_gen * bg, unsigned int * buffer, unsigned int count, unsigned int numbits);
__END_DECLS
#endif /* _PRNG_RANDOM_H_ */