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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* | |
| 3 * The contents of this file are subject to the Mozilla Public | |
| 4 * License Version 1.1 (the "License"); you may not use this file | |
| 5 * except in compliance with the License. You may obtain a copy of | |
| 6 * the License at http://www.mozilla.org/MPL/ | |
| 7 * | |
| 8 * Software distributed under the License is distributed on an "AS | |
| 9 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | |
| 10 * implied. See the License for the specific language governing | |
| 11 * rights and limitations under the License. | |
| 12 * | |
| 13 * The Original Code is the Netscape Portable Runtime (NSPR). | |
| 14 * | |
| 15 * The Initial Developer of the Original Code is Netscape | |
| 16 * Communications Corporation. Portions created by Netscape are | |
| 17 * Copyright (C) 1999-2000 Netscape Communications Corporation. All | |
| 18 * Rights Reserved. | |
| 19 * | |
| 20 * Contributor(s): | |
| 21 * | |
| 22 * Alternatively, the contents of this file may be used under the | |
| 23 * terms of the GNU General Public License Version 2 or later (the | |
| 24 * "GPL"), in which case the provisions of the GPL are applicable | |
| 25 * instead of those above. If you wish to allow use of your | |
| 26 * version of this file only under the terms of the GPL and not to | |
| 27 * allow others to use your version of this file under the MPL, | |
| 28 * indicate your decision by deleting the provisions above and | |
| 29 * replace them with the notice and other provisions required by | |
| 30 * the GPL. If you do not delete the provisions above, a recipient | |
| 31 * may use your version of this file under either the MPL or the | |
| 32 * GPL. | |
| 33 */ | |
| 34 | |
| 35 | |
| 36 /* | |
| 37 ** prrng.h -- NSPR Random Number Generator | |
| 38 ** | |
| 39 ** | |
| 40 ** lth. 29-Oct-1999. | |
| 41 */ | |
| 42 | |
| 43 #ifndef prrng_h___ | |
| 44 #define prrng_h___ | |
| 45 | |
| 46 #include "prtypes.h" | |
| 47 | |
| 48 PR_BEGIN_EXTERN_C | |
| 49 | |
| 50 /* | |
| 51 ** PR_GetRandomNoise() -- Get random noise from the host platform | |
| 52 ** | |
| 53 ** Description: | |
| 54 ** PR_GetRandomNoise() provides, depending on platform, a random value. | |
| 55 ** The length of the random value is dependent on platform and the | |
| 56 ** platform's ability to provide a random value at that moment. | |
| 57 ** | |
| 58 ** The intent of PR_GetRandomNoise() is to provide a "seed" value for a | |
| 59 ** another random number generator that may be suitable for | |
| 60 ** cryptographic operations. This implies that the random value | |
| 61 ** provided may not be, by itself, cryptographically secure. The value | |
| 62 ** generated by PR_GetRandomNoise() is at best, extremely difficult to | |
| 63 ** predict and is as non-deterministic as the underlying platfrom can | |
| 64 ** provide. | |
| 65 ** | |
| 66 ** Inputs: | |
| 67 ** buf -- pointer to a caller supplied buffer to contain the | |
| 68 ** generated random number. buf must be at least as large as | |
| 69 ** is specified in the 'size' argument. | |
| 70 ** | |
| 71 ** size -- the requested size of the generated random number | |
| 72 ** | |
| 73 ** Outputs: | |
| 74 ** a random number provided in 'buf'. | |
| 75 ** | |
| 76 ** Returns: | |
| 77 ** PRSize value equal to the size of the random number actually | |
| 78 ** generated, or zero. The generated size may be less than the size | |
| 79 ** requested. A return value of zero means that PR_GetRandomNoise() is | |
| 80 ** not implemented on this platform, or there is no available noise | |
| 81 ** available to be returned at the time of the call. | |
| 82 ** | |
| 83 ** Restrictions: | |
| 84 ** Calls to PR_GetRandomNoise() may use a lot of CPU on some platforms. | |
| 85 ** Some platforms may block for up to a few seconds while they | |
| 86 ** accumulate some noise. Busy machines generate lots of noise, but | |
| 87 ** care is advised when using PR_GetRandomNoise() frequently in your | |
| 88 ** application. | |
| 89 ** | |
| 90 ** History: | |
| 91 ** Parts of the model dependent implementation for PR_GetRandomNoise() | |
| 92 ** were taken in whole or part from code previously in Netscape's NSS | |
| 93 ** component. | |
| 94 ** | |
| 95 */ | |
| 96 NSPR_API(PRSize) PR_GetRandomNoise( | |
| 97 void *buf, | |
| 98 PRSize size | |
| 99 ); | |
| 100 | |
| 101 PR_END_EXTERN_C | |
| 102 | |
| 103 #endif /* prrng_h___ */ | |
| 104 /* end prrng.h */ | |
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Chromium Code Reviews
Issue 665543002:
Remove third_party/npapi/npspy. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master