网页制作中页面的加密和破解

网页加密, 网页破解

当你在浏览网页时，看到一个很漂亮的特效，你查看源代码时看到的是一队乱码，那多扫兴呀！根据本人的研究，总结出了三种解密方法，与大家分享！！3 V& z/ p' y6 b9 ?! K
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方法一：
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　　有一种加密的办法是采用javascript的escape()函数，把某些符号、汉字等变成乱码，以达到迷惑人的目的。解密这种代码的办法是采用其反函数加以还原。下面是一个经过加密的例子：
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<HTML>1 L% T9 {2 x5 K* k3 I+ M) S
<SCRIPT LANGUAGE="javascript">, o0 o! z2 W. O1 r" J
var Words ="%3Chtml%3E%3Cbody%20bgcolor%3D%22red%22%3E%3Cp%3E%u8FD9%u662F%u4F8B%u5B50%uFF01%uFF01%uFF1A%uFF09%3C/p%3E%3C/body%3E%3C/html%3E"( b2 l+ T4 T$ T7 ~( B
var NewWords;" @0 E2 ]4 q( O( `
NewWords = unescape(Words);( O- p0 i* ]4 c8 R6 S' n  m3 c. r& b+ N% ?
document.write(NewWords)3 V( r( S9 _5 y% `# S
</SCRIPT>
<BODY>1 m. n7 N" M, E$ G% T' A
</BODY>& q5 G) u- b* p8 _8 c
</HTML>) u. @' b* W7 S1 D/ v# l

　　这种文件最好解密，一看就明白，关键是unescape()函数起了还原源代码的作用。要想看到加密前的代码是什么样子，可以用下面的办法：

<HTML><SCRIPT LANGUAGE="javascript">1 z9 x. K5 g1 S3 S+ b  t4 a+ W
var Words ="%3Chtml%3E%3Cbody%20bgcolor%3D%22red%22%3E%3Cp%3E%u8FD9%u662F%u4F8B%u5B50%uFF01%uFF01%uFF1A%uFF09%3C/p%3E%3C/body%3E%3C/html%3E"
var NewWords;3 P- }1 j0 V4 N2 Q: r9 F
NewWords = unescape(Words);
NewWords=NewWords.toString();
function password(){. x* F" N1 T0 S4 }- A
document.pw.txtpw.value=NewWords;8 {/ |5 P+ g, j* |- p
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</SCRIPT>7 L( T1 B5 G& {* A8 {9 }7 R( _* Y
<BODY>
<form name=pw>" X( U  M, J$ `: M  O
<input type=button onclick="password()" value="解密">6 U9 ^$ ^6 n4 J2 K5 o
<br>
<textarea name="txtpw" cols="100" rows="100"></textarea>& g+ _  Y# L2 j
</form>
</BODY>
</HTML>9 O) j* t+ b: p; j

方法二：& C, X* B3 s& i1 K" B: V# X

　　有一个软件叫HTMLEncrypt.exe，它就是把源代码进行加密的软件，这个软件的加密的原理是把字符转换成Unicode代码。下面的例子是一个分帧的页面：
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<html><head><script>
function Carbosoft( s ) { var sRet=""; for(j=0; j< s.length; j++ ){ var n= s.charCodeAt(j); if (n>=8364) {n = 128;} sRet += String.fromCharCode( n - 3 ); } return( sRet ); }
var sJsCmds ="" +
"?kwpoA?khdgA?phwd#kwws0htxly@%Frqwhqw0W|sh%#frqwhqw@%wh{w2kwpo>#fkduvhw@lvr0;;8<04%A?wlwohAZHOFRPH?2wlwohA?phwd#qdph@%JHQHUDWRU%#frqwhqw@%Plfurvriw#IurqwSdjh#613%A?phwd#qdph@%Plfurvriw#Wkhph%#frqwhqw@%qrqh/#ghidxow%A?phwd#qdph@%Plfurvriw#Erughu%#frqwhqw@%qrqh/#ghidxow%A?2khdgA?iudphvhw#erughu@%3%#iudpherughu@%3%#urzv@%-/93%A##?iudph#qdph@%pdlq%#vuf@%xs1kwp%#vfuroolqj@%dxwr%A##?iudph#qdph@%rqolqh%#vuf@%grzq1kwp%#vfuroolqj@%qr%#qruhvl}h#wdujhw@%beodqn%A##?qriudphvA##?erg|A##?sAWklv#sdjh#xvhv#iudphv/#exw#|rxu#eurzvhu#grhvq*w#vxssruw#wkhp1#?2sA##?2erg|A##?2qriudphvA?2iudphvhwA?2kwpoA?irqw#froru@%&33333%A?s#doljq@%fhqwhu%A?vpdooA?irqw#idfh@%Wdkrpd%AWklv#iloh#zdv#hqfu|swhg#xvlqj#dq#xquhjlvwhuhg#yhuvlrq#ri#?d#kuhi@%kwws=22fduer{1wkhgqv1qhw2kwpohqfu|sw1kwp%AKWPO#Hqfu|sw#y413?2dA1?2irqwA?2vpdooA?2sA" +
"";2 m" s, e& _$ D* C* A
var s= Carbosoft( sJsCmds);  f' T6 @( w$ Q4 D1 x& v
document.write (s);: E) Y* A" n$ F* q
</script>
</head><body></body></html>: ^' K$ `- ?: t( o' i: E8 s8 c6 e# u

　　从上面可以看出，浏览器解释这写代码前，进行了还原，从而可以得到破解的方法如下：! o/ B  h% a, Z- n/ q
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<script>
function Carbosoft( s ) { var sRet=""; for(j=0; j< s.length; j++ ){ var n= s.charCodeAt(j); if (n>=8364) {n = 128;} sRet += String.fromCharCode( n - 3 ); } return( sRet ); }* I0 H( [" h4 i6 R
var sJsCmds ="" +1 D  G0 o& @7 W0 \$ f
"?kwpoA?khdgA?phwd#kwws0htxly@%Frqwhqw0W|sh%#frqwhqw@%wh{w2kwpo>#fkduvhw@lvr0;;8<04%A?wlwohAZHOFRPH?2wlwohA?phwd#qdph@%JHQHUDWRU%#frqwhqw@%Plfurvriw#IurqwSdjh#613%A?phwd#qdph@%Plfurvriw#Wkhph%#frqwhqw@%qrqh/#ghidxow%A?phwd#qdph@%Plfurvriw#Erughu%#frqwhqw@%qrqh/#ghidxow%A?2khdgA?iudphvhw#erughu@%3%#iudpherughu@%3%#urzv@%-/93%A##?iudph#qdph@%pdlq%#vuf@%xs1kwp%#vfuroolqj@%dxwr%A##?iudph#qdph@%rqolqh%#vuf@%grzq1kwp%#vfuroolqj@%qr%#qruhvl}h#wdujhw@%beodqn%A##?qriudphvA##?erg|A##?sAWklv#sdjh#xvhv#iudphv/#exw#|rxu#eurzvhu#grhvq*w#vxssruw#wkhp1#?2sA##?2erg|A##?2qriudphvA?2iudphvhwA?2kwpoA?irqw#froru@%&33333%A?s#doljq@%fhqwhu%A?vpdooA?irqw#idfh@%Wdkrpd%AWklv#iloh#zdv#hqfu|swhg#xvlqj#dq#xquhjlvwhuhg#yhuvlrq#ri#?d#kuhi@%kwws=22fduer{1wkhgqv1qhw2kwpohqfu|sw1kwp%AKWPO#Hqfu|sw#y413?2dA1?2irqwA?2vpdooA?2sA" +
"";
var s= Carbosoft( sJsCmds);
</script># G" r* c. o8 t
<form name=qq>8 R, O% B" w  t0 V( M, r& U: H6 S
<textarea name=ww cols=100 rows=10></textarea>
<input onclick='ww.value=s' type=button value="解密">" l  i+ a* U' J- {5 v; I
</form>

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方法三：: ^: i2 e7 \- E% ?
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　　有一种加密方法是每行单独加密，还原起来比较复杂。看一个加密过的原文：
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<HTML>
<BODY>/ M2 p3 f, X  T5 ?9 m
<SCRIPT LANGUAGE="javascript">
function Decode() {; n5 M& {0 ?% D; z: ]$ g; i
d("FrfmnD");d("FruyvDFgwhqjfWnyeseysuEXpydy%whqjf~J~XWghwEXfkjJpgXDFIgwhqjfD");d("FmufyWrffjKuieqdEX?klfulfK$ajuXWwklfulfEXfubfIrfmnGWwryhgufEsx}{~}XD");d("FfqfnuDejFIfqfnuD");d("FIruyvD");d("FxkvaD");d("FIxkvaD");d("FIrfmnD");d("W");return 0;}' j& Q6 z0 d$ l* V9 M. _) o. n
</SCRIPT>
<SCRIPT LANGUAGE="javascript">
function d (enc) {document.write(codeIt(key,enc));}
var key = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!\"\ \|#$%&\'()*+,-.\/:;<=>?@[\\]^_\t\`{}~\n";function codeIt (mC, eS) {var wTG, mcH = mC.length / 2, nS = "", dv;for (var x = 0; x < eS.length; x++) { wTG = mC.indexOf(eS.charAt(x));if (wTG > mcH) {dv = wTG - mcH; nS = nS + mC.charAt(48 - dv);}else {dv = mcH - wTG;nS = nS + mC.charAt(48 + dv);}}return nS;}6 U" J/ B3 P, f' ~) U" }( t4 x
</SCRIPT>! s& }7 d( b( `$ c
<SCRIPT LANGUAGE="javascript">
Decode();5 L0 @: n3 f7 [1 N7 @
</SCRIPT>
</BODY>
</HTML>" E1 M8 K) D2 b8 p) g
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　　还原的时候，也必须每行单独解密，用下面的方法可以看到源代码：7 v7 G: C' r1 Z& `  X0 [1 Z' Z
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<HTML>& i6 k2 h$ G9 P
<BODY>
<SCRIPT LANGUAGE="javascript">- k# @! X6 @* q9 ?, P6 l& h
function Decode() {
d("FrfmnD");d("FruyvDFgwhqjfWnyeseysuEXpydy%whqjf~J~XWghwEXfkjJpgXDFIgwhqjfD");d("FmufyWrffjKuieqdEX?klfulfK$ajuXWwklfulfEXfubfIrfmnGWwryhgufEsx}{~}XD");d("FfqfnuDejFIfqfnuD");d("FIruyvD");d("FxkvaD");d("FIxkvaD");d("FIrfmnD");d("W");return 0;}
</SCRIPT>! ]: o3 P6 f- e  A  [1 A
<SCRIPT LANGUAGE="javascript">3 P' ]0 S) y, ^4 X  }) {# j* h
function d (enc) {alert(codeIt(key,enc));}1 }0 M: I) @( I  ^1 K
var key = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!\"\ \|#$%&\'()*+,-.\/:;<=>?@[\\]^_\t\`{}~\n";function codeIt (mC, eS) {var wTG, mcH = mC.length / 2, nS = "", dv;for (var x = 0; x < eS.length; x++) { wTG = mC.indexOf(eS.charAt(x));if (wTG > mcH) {dv = wTG - mcH; nS = nS + mC.charAt(48 - dv);}else {dv = mcH - wTG;nS = nS + mC.charAt(48 + dv);}}return nS;}" C- G* z# B  M/ ~
</SCRIPT>+ y; j# @- q% Q, y
<SCRIPT LANGUAGE="javascript">1 Z) I. ^9 X* I2 Y7 [' K% O% O
Decode();
</SCRIPT>
</BODY>
</HTML>6 j7 X, `: j# M8 n5 s" H
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　　哈哈！！:=)是不是很精彩！！

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