1*fdd8201dSApple OSS Distributions /* 2*fdd8201dSApple OSS Distributions * Copyright (c) 2019 Apple Inc. All rights reserved. 3*fdd8201dSApple OSS Distributions * 4*fdd8201dSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*fdd8201dSApple OSS Distributions * 6*fdd8201dSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*fdd8201dSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*fdd8201dSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*fdd8201dSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*fdd8201dSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*fdd8201dSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*fdd8201dSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*fdd8201dSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*fdd8201dSApple OSS Distributions * 15*fdd8201dSApple OSS Distributions * Please obtain a copy of the License at 16*fdd8201dSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*fdd8201dSApple OSS Distributions * 18*fdd8201dSApple OSS Distributions * The Original Code and all software distributed under the License are 19*fdd8201dSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*fdd8201dSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*fdd8201dSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*fdd8201dSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*fdd8201dSApple OSS Distributions * Please see the License for the specific language governing rights and 24*fdd8201dSApple OSS Distributions * limitations under the License. 25*fdd8201dSApple OSS Distributions * 26*fdd8201dSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*fdd8201dSApple OSS Distributions */ 28*fdd8201dSApple OSS Distributions 29*fdd8201dSApple OSS Distributions #ifndef _PRNG_RANDOM_H_ 30*fdd8201dSApple OSS Distributions #define _PRNG_RANDOM_H_ 31*fdd8201dSApple OSS Distributions 32*fdd8201dSApple OSS Distributions __BEGIN_DECLS 33*fdd8201dSApple OSS Distributions 34*fdd8201dSApple OSS Distributions #include <corecrypto/cckprng.h> 35*fdd8201dSApple OSS Distributions 36*fdd8201dSApple OSS Distributions #ifdef XNU_KERNEL_PRIVATE 37*fdd8201dSApple OSS Distributions 38*fdd8201dSApple OSS Distributions void random_cpu_init(int cpu); 39*fdd8201dSApple OSS Distributions 40*fdd8201dSApple OSS Distributions #endif /* XNU_KERNEL_PRIVATE */ 41*fdd8201dSApple OSS Distributions 42*fdd8201dSApple OSS Distributions void register_and_init_prng(struct cckprng_ctx *ctx, const struct cckprng_funcs *funcs); 43*fdd8201dSApple OSS Distributions 44*fdd8201dSApple OSS Distributions #include <kern/simple_lock.h> 45*fdd8201dSApple OSS Distributions /* Definitions for boolean PRNG */ 46*fdd8201dSApple OSS Distributions #define RANDOM_BOOL_GEN_SEED_COUNT 4 47*fdd8201dSApple OSS Distributions struct bool_gen { 48*fdd8201dSApple OSS Distributions unsigned int seed[RANDOM_BOOL_GEN_SEED_COUNT]; 49*fdd8201dSApple OSS Distributions unsigned int state; 50*fdd8201dSApple OSS Distributions decl_simple_lock_data(, lock); 51*fdd8201dSApple OSS Distributions }; 52*fdd8201dSApple OSS Distributions 53*fdd8201dSApple OSS Distributions extern void random_bool_init(struct bool_gen * bg); 54*fdd8201dSApple OSS Distributions 55*fdd8201dSApple OSS Distributions extern void random_bool_gen_entropy(struct bool_gen * bg, unsigned int * buffer, int count); 56*fdd8201dSApple OSS Distributions 57*fdd8201dSApple OSS Distributions extern unsigned int random_bool_gen_bits(struct bool_gen * bg, unsigned int * buffer, unsigned int count, unsigned int numbits); 58*fdd8201dSApple OSS Distributions 59*fdd8201dSApple OSS Distributions __END_DECLS 60*fdd8201dSApple OSS Distributions 61*fdd8201dSApple OSS Distributions #endif /* _PRNG_RANDOM_H_ */ 62