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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:49:04 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:49:04 +0000 |
commit | 16f504a9dca3fe3b70568f67b7d41241ae485288 (patch) | |
tree | c60f36ada0496ba928b7161059ba5ab1ab224f9d /src/libs/xpcom18a4/nsprpub/pr/include/prrng.h | |
parent | Initial commit. (diff) | |
download | virtualbox-upstream.tar.xz virtualbox-upstream.zip |
Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/libs/xpcom18a4/nsprpub/pr/include/prrng.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/nsprpub/pr/include/prrng.h b/src/libs/xpcom18a4/nsprpub/pr/include/prrng.h new file mode 100644 index 00000000..90d1a385 --- /dev/null +++ b/src/libs/xpcom18a4/nsprpub/pr/include/prrng.h @@ -0,0 +1,111 @@ +/* -*- 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" + +#ifdef VBOX_WITH_XPCOM_NAMESPACE_CLEANUP +#define PR_GetRandomNoise VBoxNsprPR_GetRandomNoise +#endif /* VBOX_WITH_XPCOM_NAMESPACE_CLEANUP */ + +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 */ |