/*
?*?Copyright?1995-2016?The?OpenSSL?Project?Authors.?All?Rights?Reserved.
?*
?*?Licensed?under?the?OpenSSL?license?（the?“License“）.??You?may?not?use
?*?this?file?except?in?compliance?with?the?License.??You?can?obtain?a?copy
?*?in?the?file?LICENSE?in?the?source?distribution?or?at
?*?https://www.openssl.org/source/license.html
?*/

#include?
#include?“rc4_locl.h“

/*-
?*?RC4?as?implemented?from?a?posting?from
?*?Newsgroups:?sci.crypt
?*?From:?sterndark@netcom.com?（David?Sterndark）
?*?Subject:?RC4?Algorithm?revealed.
?*?Message-ID:?
?*?Date:?Wed?14?Sep?1994?06:35:31?GMT
?*/

void?RC4（RC4_KEY?*key?size_t?len?const?unsigned?char?*indata
?????????unsigned?char?*outdata）
{
????register?RC4_INT?*d;
????register?RC4_INT?x?y?tx?ty;
????size_t?i;

????x?=?key->x;
????y?=?key->y;
????d?=?key->data;

#define?LOOP（inout）?\
????????????????x=（（x+1）&0xff）;?\
????????????????tx=d[x];?\
????????????????y=（tx+y）&0xff;?\
????????????????d[x]=ty=d[y];?\
????????????????d[y]=tx;?\
????????????????（out）?=?d[（tx+ty）&0xff]^?（in）;

????i?=?len?>>?3;
????if?（i）?{
????????for?（;;）?{
????????????LOOP（indata[0]?outdata[0]）;
????????????LOOP（indata[1]?outdata[1]）;
????????????LOOP（indata[2]?outdata[2]）;
????????????LOOP（indata[3]?outdata[3]）;
????????????LOOP（indata[4]?outdata[4]）;
????????????LOOP（indata[5]?outdata[5]）;
????????????LOOP（indata[6]?outdata[6]）;
????????????LOOP（indata[7]?outdata[7]）;
????????????indata?+=?8;
????????????outdata?+=?8;
????????????if?（--i?==?0）
????????????????break;
????????}
????}
????i?=?len?&?0x07;
????if?（i）?{
????????for?（;;）?{
????????????LOOP（indata[0]?outdata[0]）;
????????????if?（--i?==?0）
????????????????break;
????????????LOOP（indata[1]?outdata[1]）;
????????????if?（--i?==?0）
????????????????break;
????????????LOOP（indata[2]?outdata[2]）;
????????????if?（--i?==?0）
????????????????break;
????????????LOOP（indata[3]?outdata[3]）;
????????????if?（--i?==?0）
????????????????break;
????????????LOOP（indata[4]?outdata[4]）;
????????????if?（--i?==?0）
????????????????break;
????????????LOOP（indata[5]?outdata[5]）;
????????????if?（--i?==?0）
????????????????break;
????????????LOOP（indata[6]?outdata[6]）;
????????????if?（--i?==?0）
????????????????break;
????????}
????}
????key->x?=?x;
????key->y?=?y;
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????12509??2016-09-22?18:14??rc4\asm\rc4-586.pl

?????文件???????4276??2016-09-22?18:14??rc4\asm\rc4-c64xplus.pl

?????文件??????22633??2016-09-22?18:14??rc4\asm\rc4-ia64.pl

?????文件??????16497??2016-09-22?18:14??rc4\asm\rc4-md5-x86_64.pl

?????文件???????7029??2016-09-22?18:14??rc4\asm\rc4-parisc.pl

?????文件???????4658??2016-09-22?18:14??rc4\asm\rc4-s390x.pl

?????文件??????16136??2016-09-22?18:14??rc4\asm\rc4-x86_64.pl

?????文件???????1218??2016-09-22?18:14??rc4\build.info

?????文件???????7363??2017-04-25?21:04??rc4\rc4-586.asm

?????文件???????2326??2017-04-25?21:04??rc4\rc4-586.obj

?????文件???????2301??2016-09-22?18:14??rc4\rc4_enc.c

?????文件????????462??2016-09-22?18:14??rc4\rc4_locl.h

?????文件???????1450??2016-09-22?18:14??rc4\rc4_skey.c

?????目錄??????????0??2017-04-12?19:20??rc4\asm

?????目錄??????????0??2017-04-25?21:04??rc4

-----------?---------??----------?-----??----

????????????????98858????????????????????15