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！！
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方法一：6 J! R; U- w/ N* z. \8 H+ Z; H

　　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：

<HTML>( S; O; T+ p( K* ^! O5 Y' y
<SCRIPT LANGUAGE="javascript">
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;7 T8 e, J& C2 l9 y# [/ \
NewWords = unescape(Words);0 m/ Y/ y, k7 y
document.write(NewWords)
</SCRIPT>+ `  k7 y2 i1 m% g7 {
<BODY>% W7 d; ^" ^. g, ]1 c* W; H' F
</BODY>: T) t& X8 T+ t% u( S; r3 q
</HTML>

　　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：- B! W1 f1 l2 G1 U: |$ Q% |4 G

<HTML><SCRIPT LANGUAGE="javascript">
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;" \7 q' r; X: I' K4 R' X0 e1 h
NewWords = unescape(Words);
NewWords=NewWords.toString();
function password(){+ ]$ P! x" `4 ?; _5 [( v% J
document.pw.txtpw.value=NewWords;
}
</SCRIPT>5 I+ D( ]' D; K/ f+ \9 q
<BODY>
<form name=pw>
<input type=button onclick="password()" value="解密">7 B% x- s2 X- e! U' d
<br>
<textarea name="txtpw" cols="100" rows="100"></textarea>
</form>( r; ~% g; Q+ z. f3 P
</BODY>3 P+ I: r. y$ f- T+ b: L) `# p
</HTML>3 u; j: o. H! y/ x
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方法二：+ b8 _& X5 B2 _
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　　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 ); }3 y0 M( d' ~; u; J) ~
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" +( {8 ~8 K) z7 \5 i% A
"";
var s= Carbosoft( sJsCmds);
document.write (s);
</script>$ a) N: i' f, f
</head><body></body></html>5 L2 O2 w  V" ~$ b

　　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：5 C4 ~5 |+ S( B
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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 ); }+ w( ^/ H+ M/ l7 B# J! Q% X3 ~; O6 Y
var sJsCmds ="" +1 C5 w* ?7 @0 i& c' I* M. a
"?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" +8 r! A1 v2 ^& W) T
"";
var s= Carbosoft( sJsCmds);
</script>
<form name=qq>8 q* e' M9 D1 x3 F0 j# T+ b
<textarea name=ww cols=100 rows=10></textarea>
<input onclick='ww.value=s' type=button value="解密">
</form>2 s# u$ J  j! v- ]
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方法三：4 A" x1 x: v& j$ 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>
<SCRIPT LANGUAGE="javascript"># d' F8 f; f" k- f4 ]0 Q
function Decode() {+ d& w7 i) w4 _+ y8 P3 l
d("FrfmnD");d("FruyvDFgwhqjfWnyeseysuEXpydy%whqjf~J~XWghwEXfkjJpgXDFIgwhqjfD");d("FmufyWrffjKuieqdEX?klfulfK$ajuXWwklfulfEXfubfIrfmnGWwryhgufEsx}{~}XD");d("FfqfnuDejFIfqfnuD");d("FIruyvD");d("FxkvaD");d("FIxkvaD");d("FIrfmnD");d("W");return 0;}
</SCRIPT>
<SCRIPT LANGUAGE="javascript">) r9 G$ }0 N) K' Q; N4 G
function d (enc) {document.write(codeIt(key,enc));}& [$ i& U1 ~4 B+ ~$ m
var key = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!\"\ \|#$%&\'()*+,-.\/:;<=>?@[\\]^_\t\`{}~\n";function codeIt (mC, eS) {var wTG, mcH = mC.length / 2, nS = "", dv;for (var x = 0; x < eS.length; x++) { wTG = mC.indexOf(eS.charAt(x));if (wTG > mcH) {dv = wTG - mcH; nS = nS + mC.charAt(48 - dv);}else {dv = mcH - wTG;nS = nS + mC.charAt(48 + dv);}}return nS;}9 n' C: r4 s( D& _
</SCRIPT>' m6 q" b3 z+ |. c0 u- p# I$ P
<SCRIPT LANGUAGE="javascript">
Decode();
</SCRIPT>
</BODY>' E6 v8 {( ~4 ~* S0 {
</HTML>0 L. M0 O" `  p+ j& c: w. q
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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：' S9 V0 _& Y& Z+ C& B# C
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<HTML>1 D$ ]& r2 X/ T0 F/ v
<BODY>
<SCRIPT LANGUAGE="javascript">
function Decode() {7 ]8 B. T( Q9 B: P7 f7 c$ Y
d("FrfmnD");d("FruyvDFgwhqjfWnyeseysuEXpydy%whqjf~J~XWghwEXfkjJpgXDFIgwhqjfD");d("FmufyWrffjKuieqdEX?klfulfK$ajuXWwklfulfEXfubfIrfmnGWwryhgufEsx}{~}XD");d("FfqfnuDejFIfqfnuD");d("FIruyvD");d("FxkvaD");d("FIxkvaD");d("FIrfmnD");d("W");return 0;}
</SCRIPT>8 J# Q8 W6 D8 Y5 Y
<SCRIPT LANGUAGE="javascript">" _9 t; K. |$ v/ X7 I5 s. _8 J4 C
function d (enc) {alert(codeIt(key,enc));}
var key = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!\"\ \|#$%&\'()*+,-.\/:;<=>?@[\\]^_\t\`{}~\n";function codeIt (mC, eS) {var wTG, mcH = mC.length / 2, nS = "", dv;for (var x = 0; x < eS.length; x++) { wTG = mC.indexOf(eS.charAt(x));if (wTG > mcH) {dv = wTG - mcH; nS = nS + mC.charAt(48 - dv);}else {dv = mcH - wTG;nS = nS + mC.charAt(48 + dv);}}return nS;}7 _/ Z+ y  i; K
</SCRIPT>
<SCRIPT LANGUAGE="javascript">
Decode();9 r4 ^( p( k- S/ S0 C
</SCRIPT>
</BODY>
</HTML>) U  `7 k* f0 F$ D$ O1 Y
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　　哈哈！！:=)是不是很精彩！！

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