/* * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved. * * The contents of this file constitute Original Code as defined in and are * subject to the Apple Public Source License Version 1.2 (the 'License'). * You may not use this file except in compliance with the License. Please obtain * a copy of the License at http://www.apple.com/publicsource and read it before * using this file. * * This Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the * specific language governing rights and limitations under the License. */ /* File: systemEntropy.h Contains: System entropy collector, using sysctl(CTL_KERN:KERN_KDEBUG) trace info Copyright: (C) 2000 by Apple Computer, Inc., all rights reserved Written by: Doug Mitchell <dmitch@apple.com> */ #ifndef _YARROW_SYSTEM_ENTROPY_H_ #define _YARROW_SYSTEM_ENTROPY_H_ #include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacTypes.h> #ifdef __cplusplus extern "C" { #endif /* start collecting system entropy */ int systemEntropyBegin( UInt32 bufSize); // desired number of bytes to collect /* gather system entropy in caller-supplied buffer */ int systemEntropyCollect( UInt8 *buf, UInt32 bufSize, UInt32 *numBytes, // RETURNED - number of bytes obtained UInt32 *bitsOfEntropy); // RETURNED - est. amount of entropy /* minimum number of milliseconds between calling systemEntropyBegin() and * systemEntropyCollect() */ #define SYSTEM_ENTROPY_COLLECT_TIME 100 //#define SYSTEM_ENTROPY_COLLECT_TIME 5000 #ifdef __cplusplus } #endif #endif /* _YARROW_SYSTEM_ENTROPY_H_*/