1*0f4c859eSApple OSS Distributions /* 2*0f4c859eSApple OSS Distributions * Copyright (c) 2019 Apple Inc. All rights reserved. 3*0f4c859eSApple OSS Distributions * 4*0f4c859eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*0f4c859eSApple OSS Distributions * 6*0f4c859eSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*0f4c859eSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*0f4c859eSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*0f4c859eSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*0f4c859eSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*0f4c859eSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*0f4c859eSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*0f4c859eSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*0f4c859eSApple OSS Distributions * 15*0f4c859eSApple OSS Distributions * Please obtain a copy of the License at 16*0f4c859eSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*0f4c859eSApple OSS Distributions * 18*0f4c859eSApple OSS Distributions * The Original Code and all software distributed under the License are 19*0f4c859eSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*0f4c859eSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*0f4c859eSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*0f4c859eSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*0f4c859eSApple OSS Distributions * Please see the License for the specific language governing rights and 24*0f4c859eSApple OSS Distributions * limitations under the License. 25*0f4c859eSApple OSS Distributions * 26*0f4c859eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*0f4c859eSApple OSS Distributions */ 28*0f4c859eSApple OSS Distributions 29*0f4c859eSApple OSS Distributions #ifndef _PRNG_RANDOM_H_ 30*0f4c859eSApple OSS Distributions #define _PRNG_RANDOM_H_ 31*0f4c859eSApple OSS Distributions 32*0f4c859eSApple OSS Distributions __BEGIN_DECLS 33*0f4c859eSApple OSS Distributions 34*0f4c859eSApple OSS Distributions #include <corecrypto/cckprng.h> 35*0f4c859eSApple OSS Distributions 36*0f4c859eSApple OSS Distributions #ifdef XNU_KERNEL_PRIVATE 37*0f4c859eSApple OSS Distributions 38*0f4c859eSApple OSS Distributions void random_cpu_init(int cpu); 39*0f4c859eSApple OSS Distributions 40*0f4c859eSApple OSS Distributions #endif /* XNU_KERNEL_PRIVATE */ 41*0f4c859eSApple OSS Distributions 42*0f4c859eSApple OSS Distributions void register_and_init_prng(struct cckprng_ctx *ctx, const struct cckprng_funcs *funcs); 43*0f4c859eSApple OSS Distributions 44*0f4c859eSApple OSS Distributions #include <kern/simple_lock.h> 45*0f4c859eSApple OSS Distributions /* Definitions for boolean PRNG */ 46*0f4c859eSApple OSS Distributions #define RANDOM_BOOL_GEN_SEED_COUNT 4 47*0f4c859eSApple OSS Distributions struct bool_gen { 48*0f4c859eSApple OSS Distributions unsigned int seed[RANDOM_BOOL_GEN_SEED_COUNT]; 49*0f4c859eSApple OSS Distributions unsigned int state; 50*0f4c859eSApple OSS Distributions decl_simple_lock_data(, lock); 51*0f4c859eSApple OSS Distributions }; 52*0f4c859eSApple OSS Distributions 53*0f4c859eSApple OSS Distributions extern void random_bool_init(struct bool_gen * bg); 54*0f4c859eSApple OSS Distributions 55*0f4c859eSApple OSS Distributions extern void random_bool_gen_entropy(struct bool_gen * bg, unsigned int * buffer, int count); 56*0f4c859eSApple OSS Distributions 57*0f4c859eSApple OSS Distributions extern unsigned int random_bool_gen_bits(struct bool_gen * bg, unsigned int * buffer, unsigned int count, unsigned int numbits); 58*0f4c859eSApple OSS Distributions 59*0f4c859eSApple OSS Distributions __END_DECLS 60*0f4c859eSApple OSS Distributions 61*0f4c859eSApple OSS Distributions #endif /* _PRNG_RANDOM_H_ */ 62