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100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _SECRNG_H_
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#define _SECRNG_H_
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/*
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* secrng.h - public data structures and prototypes for the secure random
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* number generator
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*
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* $Id: secrng.h,v 1.6 2006/10/12 02:23:49 wtchang%redhat.com Exp $
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*/
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/******************************************/
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/*
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** Random number generation. A cryptographically strong random number
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** generator.
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*/
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#include "blapi.h"
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/* the number of bytes to read from the system random number generator */
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#define SYSTEM_RNG_SEED_COUNT 1024
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SEC_BEGIN_PROTOS
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/*
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** The following functions are provided by the security library
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** but are differently implemented for the UNIX, Win, and OS/2
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** versions
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*/
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/*
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** Get the "noisiest" information available on the system.
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** The amount of data returned depends on the system implementation.
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** It will not exceed maxbytes, but may be (much) less.
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** Returns number of noise bytes copied into buf, or zero if error.
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*/
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extern size_t RNG_GetNoise(void *buf, size_t maxbytes);
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/*
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** RNG_SystemInfoForRNG should be called before any use of SSL. It
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** gathers up the system specific information to help seed the
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** state of the global random number generator.
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*/
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extern void RNG_SystemInfoForRNG(void);
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/*
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** Use the contents (and stat) of a file to help seed the
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** global random number generator.
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*/
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extern void RNG_FileForRNG(const char *filename);
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/*
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** Get maxbytes bytes of random data from the system random number
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** generator.
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** Returns the number of bytes copied into buf -- maxbytes if success
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** or zero if error.
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** Errors:
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** PR_NOT_IMPLEMENTED_ERROR There is no system RNG on the platform.
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** SEC_ERROR_NEED_RANDOM The system RNG failed.
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*/
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extern size_t RNG_SystemRNG(void *buf, size_t maxbytes);
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SEC_END_PROTOS
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#endif /* _SECRNG_H_ */
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