/*?Portable?arc4random.c?based?on?arc4random.c?from?OpenBSD.
?*?Portable?version?by?Chris?Davis?adapted?for?Libevent?by?Nick?Mathewson
?*?Copyright?（c）?2010?Chris?Davis?Niels?Provos?and?Nick?Mathewson
?*?Copyright?（c）?2010-2012?Niels?Provos?and?Nick?Mathewson
?*
?*?Note?that?in?Libevent?this?file?isn‘t?compiled?directly.??Instead
?*?it‘s?included?from?evutil_rand.c
?*/

/*
?*?Copyright?（c）?1996?David?Mazieres?
?*?Copyright?（c）?2008?Damien?Miller?
?*
?*?Permission?to?use?copy?modify?and?distribute?this?software?for?any
?*?purpose?with?or?without?fee?is?hereby?granted?provided?that?the?above
?*?copyright?notice?and?this?permission?notice?appear?in?all?copies.
?*
?*?THE?SOFTWARE?IS?PROVIDED?“AS?IS“?AND?THE?AUTHOR?DISCLAIMS?ALL?WARRANTIES
?*?WITH?REGARD?TO?THIS?SOFTWARE?INCLUDING?ALL?IMPLIED?WARRANTIES?OF
?*?MERCHANTABILITY?AND?FITNESS.?IN?NO?EVENT?SHALL?THE?AUTHOR?BE?LIABLE?FOR
?*?ANY?SPECIAL?DIRECT?INDIRECT?OR?CONSEQUENTIAL?DAMAGES?OR?ANY?DAMAGES
?*?WHATSOEVER?RESULTING?FROM?LOSS?OF?USE?DATA?OR?PROFITS?WHETHER?IN?AN
?*?ACTION?OF?CONTRACT?NEGLIGENCE?OR?OTHER?TORTIOUS?ACTION?ARISING?OUT?OF
?*?OR?IN?CONNECTION?WITH?THE?USE?OR?PERFORMANCE?OF?THIS?SOFTWARE.
?*/

/*
?*?Arc4?random?number?generator?for?OpenBSD.
?*
?*?This?code?is?derived?from?section?17.1?of?Applied?Cryptography
?*?second?edition?which?describes?a?stream?cipher?allegedly
?*?compatible?with?RSA?Labs?“RC4“?cipher?（the?actual?description?of
?*?which?is?a?trade?secret）.??The?same?algorithm?is?used?as?a?stream
?*?cipher?called?“arcfour“?in?Tatu?Ylonen‘s?ssh?package.
?*
?*?Here?the?stream?cipher?has?been?modified?always?to?include?the?time
?*?when?initializing?the?state.??That?makes?it?impossible?to
?*?regenerate?the?same?random?sequence?twice?so?this?can‘t?be?used
?*?for?encryption?but?will?generate?good?random?numbers.
?*
?*?RC4?is?a?registered?trademark?of?RSA?Laboratories.
?*/

#ifndef?ARC4RANDOM_EXPORT
#define?ARC4RANDOM_EXPORT
#endif

#ifndef?ARC4RANDOM_UINT32
#define?ARC4RANDOM_UINT32?uint32_t
#endif

#ifndef?ARC4RANDOM_NO_INCLUDES
#ifdef?WIN32
#include?
#include?
#else
#include?
#include?
#include?
#include?
#ifdef?_EVENT_HAVE_SYS_SYSCTL_H
#include?
#endif
#endif
#include?
#include?
#include?
#endif

/*?Add?platform?entropy?32?bytes?（256?bits）?at?a?time.?*/
#define?ADD_ENTROPY?32

/*?Re-seed?from?the?platform?RNG?after?generating?this?many?bytes.?*/
#define?BYTES_BEFORE_RESEED?1600000

struct?arc4_stream?{
	unsigned?char?i;
	unsigned?char?j;
	unsigned?char?s[256];
};

#ifdef?WIN32
#define?getpid?_getpid
#define?pid_t?int
#endif

static?int?rs_initialized;
static?struct?arc4_stream?rs;
static?pid_t?arc4_stir_pid;
static?int?arc4_count;
static?int?arc4_seeded_ok;

static?inline?unsigned?char?arc4_getbyte（void）;

static?inline?void
arc4_init（void）
{
	int?????n;

	for?（n?=?0;?n?		rs.s[n]?=?n;
	rs.i?=?0;
	rs.j?=?0;
}

st

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????36789??2012-11-19?23:13??libevent\aclocal.m4

?????文件??????12719??2012-02-12?10:10??libevent\arc4random.c

?????文件????????308??2012-02-11?06:17??libevent\autogen.sh

?????文件??????72383??2014-11-16?21:23??libevent\buffer.c

?????文件??????15801??2012-02-11?06:17??libevent\bufferevent-internal.h

?????文件??????22547??2012-08-23?23:31??libevent\bufferevent.c

?????文件??????18234??2012-02-11?06:17??libevent\bufferevent_async.c

?????文件??????15048??2012-02-11?06:17??libevent\bufferevent_filter.c

?????文件??????37962??2012-11-17?08:22??libevent\bufferevent_openssl.c

?????文件???????8815??2012-02-11?06:17??libevent\bufferevent_pair.c

?????文件??????28521??2012-02-11?06:17??libevent\bufferevent_ratelim.c

?????文件??????17806??2012-11-02?02:00??libevent\bufferevent_sock.c

?????文件???????8604??2012-02-11?06:17??libevent\buffer_iocp.c

?????文件???????4562??2012-02-11?06:17??libevent\changelist-internal.h

?????文件??????88277??2012-11-18?14:34??libevent\ChangeLog

?????文件??????16673??2012-02-11?06:17??libevent\compat\sys\queue.h

?????文件???????7274??2012-11-19?23:13??libevent\compile

?????文件??????44826??2012-11-19?23:13??libevent\config.guess

?????文件??????11968??2012-11-19?23:13??libevent\config.h.in

?????文件??????35454??2012-11-19?23:13??libevent\config.sub

?????文件?????504592??2012-11-19?23:13??libevent\configure

?????文件??????21849??2012-11-18?14:34??libevent\configure.in

?????文件???????3698??2012-02-11?06:17??libevent\defer-internal.h

?????文件??????20899??2012-11-19?23:13??libevent\depcomp

?????文件???????7793??2014-11-22?17:42??libevent\devpoll.c

?????文件??????10206??2012-02-11?06:17??libevent\Doxyfile

?????文件??????13079??2012-02-11?06:17??libevent\epoll.c

?????文件???????2020??2012-02-11?06:17??libevent\epoll_sub.c

?????文件??????10546??2012-02-11?06:17??libevent\evbuffer-internal.h

?????文件?????127701??2012-11-02?02:00??libevent\evdns.c

............此處省略179個文件信息