mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
108 lines
3.9 KiB
C
108 lines
3.9 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is the Netscape Portable Runtime (NSPR).
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1999-2000
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
|
|
/*
|
|
** prrng.h -- NSPR Random Number Generator
|
|
**
|
|
**
|
|
** lth. 29-Oct-1999.
|
|
*/
|
|
|
|
#ifndef prrng_h___
|
|
#define prrng_h___
|
|
|
|
#include "prtypes.h"
|
|
|
|
PR_BEGIN_EXTERN_C
|
|
|
|
/*
|
|
** PR_GetRandomNoise() -- Get random noise from the host platform
|
|
**
|
|
** Description:
|
|
** PR_GetRandomNoise() provides, depending on platform, a random value.
|
|
** The length of the random value is dependent on platform and the
|
|
** platform's ability to provide a random value at that moment.
|
|
**
|
|
** The intent of PR_GetRandomNoise() is to provide a "seed" value for a
|
|
** another random number generator that may be suitable for
|
|
** cryptographic operations. This implies that the random value
|
|
** provided may not be, by itself, cryptographically secure. The value
|
|
** generated by PR_GetRandomNoise() is at best, extremely difficult to
|
|
** predict and is as non-deterministic as the underlying platfrom can
|
|
** provide.
|
|
**
|
|
** Inputs:
|
|
** buf -- pointer to a caller supplied buffer to contain the
|
|
** generated random number. buf must be at least as large as
|
|
** is specified in the 'size' argument.
|
|
**
|
|
** size -- the requested size of the generated random number
|
|
**
|
|
** Outputs:
|
|
** a random number provided in 'buf'.
|
|
**
|
|
** Returns:
|
|
** PRSize value equal to the size of the random number actually
|
|
** generated, or zero. The generated size may be less than the size
|
|
** requested. A return value of zero means that PR_GetRandomNoise() is
|
|
** not implemented on this platform, or there is no available noise
|
|
** available to be returned at the time of the call.
|
|
**
|
|
** Restrictions:
|
|
** Calls to PR_GetRandomNoise() may use a lot of CPU on some platforms.
|
|
** Some platforms may block for up to a few seconds while they
|
|
** accumulate some noise. Busy machines generate lots of noise, but
|
|
** care is advised when using PR_GetRandomNoise() frequently in your
|
|
** application.
|
|
**
|
|
** History:
|
|
** Parts of the model dependent implementation for PR_GetRandomNoise()
|
|
** were taken in whole or part from code previously in Netscape's NSS
|
|
** component.
|
|
**
|
|
*/
|
|
NSPR_API(PRSize) PR_GetRandomNoise(
|
|
void *buf,
|
|
PRSize size
|
|
);
|
|
|
|
PR_END_EXTERN_C
|
|
|
|
#endif /* prrng_h___ */
|
|
/* end prrng.h */
|