1*4f1223e8SApple OSS Distributions /* 2*4f1223e8SApple OSS Distributions * Copyright (c) 2019 Apple Inc. All rights reserved. 3*4f1223e8SApple OSS Distributions * 4*4f1223e8SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*4f1223e8SApple OSS Distributions * 6*4f1223e8SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*4f1223e8SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*4f1223e8SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*4f1223e8SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*4f1223e8SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*4f1223e8SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*4f1223e8SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*4f1223e8SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*4f1223e8SApple OSS Distributions * 15*4f1223e8SApple OSS Distributions * Please obtain a copy of the License at 16*4f1223e8SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*4f1223e8SApple OSS Distributions * 18*4f1223e8SApple OSS Distributions * The Original Code and all software distributed under the License are 19*4f1223e8SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*4f1223e8SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*4f1223e8SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*4f1223e8SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*4f1223e8SApple OSS Distributions * Please see the License for the specific language governing rights and 24*4f1223e8SApple OSS Distributions * limitations under the License. 25*4f1223e8SApple OSS Distributions * 26*4f1223e8SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*4f1223e8SApple OSS Distributions */ 28*4f1223e8SApple OSS Distributions 29*4f1223e8SApple OSS Distributions #ifndef _PRNG_RANDOM_H_ 30*4f1223e8SApple OSS Distributions #define _PRNG_RANDOM_H_ 31*4f1223e8SApple OSS Distributions 32*4f1223e8SApple OSS Distributions __BEGIN_DECLS 33*4f1223e8SApple OSS Distributions 34*4f1223e8SApple OSS Distributions #include <corecrypto/cckprng.h> 35*4f1223e8SApple OSS Distributions 36*4f1223e8SApple OSS Distributions #ifdef XNU_KERNEL_PRIVATE 37*4f1223e8SApple OSS Distributions 38*4f1223e8SApple OSS Distributions void random_cpu_init(int cpu); 39*4f1223e8SApple OSS Distributions 40*4f1223e8SApple OSS Distributions #endif /* XNU_KERNEL_PRIVATE */ 41*4f1223e8SApple OSS Distributions 42*4f1223e8SApple OSS Distributions void register_and_init_prng(struct cckprng_ctx *ctx, const struct cckprng_funcs *funcs); 43*4f1223e8SApple OSS Distributions 44*4f1223e8SApple OSS Distributions #include <kern/simple_lock.h> 45*4f1223e8SApple OSS Distributions /* Definitions for boolean PRNG */ 46*4f1223e8SApple OSS Distributions #define RANDOM_BOOL_GEN_SEED_COUNT 4 47*4f1223e8SApple OSS Distributions struct bool_gen { 48*4f1223e8SApple OSS Distributions unsigned int seed[RANDOM_BOOL_GEN_SEED_COUNT]; 49*4f1223e8SApple OSS Distributions unsigned int state; 50*4f1223e8SApple OSS Distributions decl_simple_lock_data(, lock); 51*4f1223e8SApple OSS Distributions }; 52*4f1223e8SApple OSS Distributions 53*4f1223e8SApple OSS Distributions extern void random_bool_init(struct bool_gen * bg); 54*4f1223e8SApple OSS Distributions 55*4f1223e8SApple OSS Distributions extern void random_bool_gen_entropy(struct bool_gen * bg, unsigned int * buffer, int count); 56*4f1223e8SApple OSS Distributions 57*4f1223e8SApple OSS Distributions extern unsigned int random_bool_gen_bits(struct bool_gen * bg, unsigned int * buffer, unsigned int count, unsigned int numbits); 58*4f1223e8SApple OSS Distributions 59*4f1223e8SApple OSS Distributions __END_DECLS 60*4f1223e8SApple OSS Distributions 61*4f1223e8SApple OSS Distributions #endif /* _PRNG_RANDOM_H_ */ 62