SecurityServer/MacYarrow/YarrowServer/entropyFile.h

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 /*
  20         File:           entropyFile.h
  21
  22         Contains:       Module to maintain MacYarrow's entropy file.
  23
  24         Written by:     Doug Mitchell
  25
  26         Copyright: (c) 2000 by Apple Computer, Inc., all rights reserved.
  27
  28         Change History (most recent first):
  29
  30                 02/29/00        dpm             Created.
  31
  32 */
  33
  34 #ifndef _ENTROPY_FILE_H_
  35 #define _ENTROPY_FILE_H_
  36
  37 #include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacTypes.h>
  38
  39 #if defined(__cplusplus)
  40 extern "C" {
  41 #endif
  42
  43 /*
  44  * Specify optional entropy file path. If this is never called,
  45  * this module will use its own default path.
  46  */
  47 OSErr setEntropyFilePath(
  48         const char *path);
  49
  50 /*
  51  * Write specified data to entropy file. A new file will be created
  52  * if none exists. Existing file's data is replaced with caller's data.
  53  */
  54 OSErr writeEntropyFile(
  55         UInt8           *bytes,
  56         UInt32          numBytes);
  57
  58 /*
  59  * Read data from entropy file.
  60  */
  61 OSErr readEntropyFile(
  62         UInt8           *bytes,
  63         UInt32          numBytes,               // max # of bytes to read
  64         UInt32          *actualBytes);  // RETURNED - number of bytes actually read
  65
  66 #if defined(__cplusplus)
  67 }
  68 #endif
  69
  70 #endif  /* _ENTROPY_FILE_H_*/