1/* 2 * Copyright (c) 1999, 2000-2013 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29/* 30 File: prngpriv.h 31 32 Contains: Private typedefs and #defines for Counterpane Yarrow PRNG. 33 34 Written by: Counterpane, Inc. 35 36 Copyright: (c) 2000 by Apple Computer, Inc., all rights reserved. 37 38 Change History (most recent first): 39 40 02/10/99 dpm Created, based on Counterpane source. 41 42*/ 43/* 44 prngpriv.h 45 46 Completely private header for the Counterpane PRNG. Should only be included by prng.c 47*/ 48 49#ifndef __YARROW_PRNG_PRIV_H__ 50#define __YARROW_PRNG_PRIV_H__ 51 52#include "userdefines.h" 53#include "prng/YarrowCoreLib/include/yarrow.h" 54#include "entropysources.h" 55#include "comp.h" 56#include "sha1mod.h" 57#include "smf.h" 58 59#define TOTAL_SOURCES ENTROPY_SOURCES+USER_SOURCES 60 61#ifdef COMPRESSION_ON 62#define COMP_SOURCES TOTAL_SOURCES 63#else 64#define COMP_SOURCES ENTROPY_SOURCES 65#endif 66 67/* Error numbers */ 68typedef enum prng_ready_status { 69 PRNG_READY = 33, /* Compiler will initialize to either 0 or random if allowed to */ 70 PRNG_NOT_READY = 0 71} prng_ready_status; 72 73/* Top level output state */ 74typedef struct{ 75 BYTE IV[20]; 76 BYTE out[20]; 77 UINT index; /* current byte to output */ 78 UINT numout; /* bytes since last prng_make_new_state */ 79} GEN_CTX; 80 81/* PRNG state structure */ 82struct PRNG { 83 /* Output State */ 84 GEN_CTX outstate; 85 86 /* Entropy Pools (somewhat unlike a gene pool) */ 87 YSHA1_CTX pool; 88 UINT poolSize[TOTAL_SOURCES]; /* Note that size is in bytes and est in bits */ 89 UINT poolEstBits[TOTAL_SOURCES]; 90 COMP_CTX comp_state[COMP_SOURCES]; 91 92 /* Status Flags */ 93 prng_ready_status ready; 94}; 95 96/* 97 * Clients see an opaque PrngRef; internal code uses the 98 * following typedef. 99 */ 100typedef struct PRNG PRNG; 101 102 103/* Test Macros */ 104#define CHECKSTATE(p) \ 105if(p==NULL) {return PRNG_ERR_NOT_READY;} /* Does the state exist? */ \ 106if(p->ready != PRNG_READY) {return PRNG_ERR_NOT_READY;} /* Set error state and return */ 107/* To make sure that a pointer isn't NULL */ 108#define PCHECK(ptr) if(ptr==NULL) {return PRNG_ERR_NULL_POINTER;} 109/* To make sure that malloc returned a valid value */ 110#define MCHECK(ptr) if(ptr==NULL) {return PRNG_ERR_LOW_MEMORY;} 111/* To make sure that a given value is non-negative */ 112#if defined(macintosh) || defined(__APPLE__) 113/* original looks like a bogon */ 114#define ZCHECK(val) if(val<0) {return PRNG_ERR_OUT_OF_BOUNDS;} 115#else 116#define ZCHECK(val) if(p<0) {return PRNG_ERR_OUT_OF_BOUNDS;} 117#endif /* macintosh */ 118/* To make sure that the generator state is valid */ 119#define GENCHECK(p) if(p->outstate.index>20) {return PRNG_ERR_OUT_OF_BOUNDS;} /* index is unsigned */ 120/* To make sure that the entropy pool is valid */ 121#define POOLCHECK(p) /* */ 122 123 124#endif 125