[求助]如何制作验证码

[B]以下是引用[I]冬冬[/I]在2005-9-10 12:29:13的发言：[/B][BR]
( W7 e4 I2 p7 {没有明天
0 e- _+ n* K' I0 j很强啊

其实强人是很多了，哦对不老范[em07][em07][em07]

搜到一个，不晓得是不是你需要的
7 k! V0 b$ ?0 ^) F0 o( F
9 Y/ M' X/ @; U. y9 {6 Q一共4个页面：form.asp; chk.asp; num.asp; count.asp
得到一个随即数字。加密！
& q7 K9 p, M# R/ {解密后成成XBM图片
利用session 判断
/ d! B# r8 a" m' i. }/ V' Y* ~# G
form.asp
- X8 |9 G- Z: k7 ?<%
6 v$ ?' L3 @' S2 |; I6 Y7 ~\'### To encrypt/decrypt include this code in your page
\'### strMyEncryptedString = EncryptString(strString)
  ~3 x; |$ o7 L3 {/ {\'### strMyDecryptedString = DeCryptString(strMyEncryptedString)
\'### You are free to use this code as long as credits remain in place
\'### also if you improve this code let me know.
" R3 b- E3 w. P. _5 |0 Z  \
Private Function EncryptString(strString)
$ H5 E- r+ q! ~, e9 ~' q\'####################################################################
" T. x) `0 J9 I& K" E! A2 r% V\'### Crypt Function (C) 2001 by Slavic Kozyuk grindkore@yahoo.com ###
\'### Arguments: strString <--- String you wish to encrypt ###
\'### Output: Encrypted HEX string ###
! }  s" U7 I9 g. L  q. h\'####################################################################

   Dim CharHexSet, intStringLen, strTemp, strRAW, i, intKey, intOffSet
6 ?( A/ V/ A7 k7 Y  P   Randomize Timer

   intKey = Round((RND * 1000000) + 1000000) \'##### Key Bitsize
3 [1 l4 |. \" `% h' i: P   intOffSet = Round((RND * 1000000) + 1000000) \'##### KeyOffSet Bitsize

   If IsNull(strString) = False Then
       strRAW = strString
) S8 h! v7 X' m4 N, ]       intStringLen = Len(strRAW)
/ X2 Z/ W3 A3 O4 e  Q, @4 G2 r
       For i = 0 to intStringLen - 1
) B* s4 R- c; |8 m  [; z* R  M           strTemp = Left(strRAW, 1)
! U1 [' f9 x; @# ^1 t$ u. s4 o           strRAW = Right(strRAW, Len(strRAW) - 1)
' N% j  F2 e$ C           CharHexSet = CharHexSet & Hex(Asc(strTemp) * intKey)& Hex(intKey)
0 T9 i5 c. o1 }1 k. E0 a" P  K       Next
9 Z  N. H7 k- d3 j) d* t, U+ l, c
       EncryptString = CharHexSet & \"|\" & Hex(intOffSet + intKey) & \"|\" & Hex(intOffSet)
   Else
       EncryptString = \"\"
   End If
End Function
3 c1 ?& }& V8 w% m5 ~


Private Function DeCryptString(strCryptString)
\'####################################################################
2 Q! ~+ V% M% y- M1 O3 h; U. M\'### Crypt Function (C) 2001 by Slavic Kozyuk grindkore@yahoo.com ###
5 X: U5 l  ^1 X- c: W\'### Arguments: Encrypted HEX stringt ###
\'### Output: Decrypted ASCII string ###
5 }' v. ?3 n4 P\'####################################################################
\'### Note this function uses HexConv() and get_hxno() functions ###
4 q- g+ w7 a7 X, `, h, h( r1 J- j\'### so make sure they are not removed ###
* k; F, C6 |! B+ n) e\'####################################################################

( \0 H; k! B( A# g   Dim strRAW, arHexCharSet, i, intKey, intOffSet, strRawKey, strHexCrypData

; D% z3 _: K2 ]# P6 I, m2 {  k" }   strRawKey = Right(strCryptString, Len(strCryptString) - InStr(strCryptString, \"|\"))
   intOffSet = Right(strRawKey, Len(strRawKey) - InStr(strRawKey,\"|\"))
+ ]! \) s. P+ w2 i2 Y5 ?9 x   intKey = HexConv(Left(strRawKey, InStr(strRawKey, \"|\") - 1)) - HexConv(intOffSet)
   strHexCrypData = Left(strCryptString, Len(strCryptString) - (Len(strRawKey) + 1))

* E1 j5 B3 N+ L1 u   arHexCharSet = Split(strHexCrypData, Hex(intKey))

! n1 X4 M: R  y( v   For i=0 to UBound(arHexCharSet)
6 }  u; N9 N8 l  [- o) s       strRAW = strRAW & Chr(HexConv(arHexCharSet(i))/intKey)
   Next
' b0 y; ~+ p+ ~8 j' [& O/ }
5 }1 o$ m  A7 s; O( l! E   DeCryptString = strRAW
End Function
* u+ u. z! b4 C# j  [, z% N5 I' I

0 L% m& O1 |/ n! H+ M& ?) SPrivate Function HexConv(hexVar)
9 C, D) z! g. U  A   Dim hxx, hxx_var, multiply
1 ]. k1 H, V5 R1 b2 ~$ y6 f4 B9 C   IF hexVar <> \"\" THEN
       hexVar = UCASE(hexVar)
( m+ l- }4 ]% }( D0 y+ H' B       hexVar = StrReverse(hexVar)
% r3 k  {3 T/ |( L" e, H       DIM hx()
       REDIM hx(LEN(hexVar))
* q: B7 ?5 {8 F0 E       hxx = 0
) A* w, ^2 q* q. K0 v% D3 @  N  H       hxx_var = 0
! q! z) q: M  j* Q; M0 G       FOR hxx = 1 TO LEN(hexVar)
           IF multiply = \"\" THEN multiply = 1
* {+ p+ m: M7 R7 L9 J, W# k) Q% x           hx(hxx) = mid(hexVar,hxx,1)
+ Q. E5 ^' T0 t, [           hxx_var = (get_hxno(hx(hxx)) * multiply) + hxx_var
           multiply = (multiply * 16)
       NEXT
       hexVar = hxx_var
" S2 t! k! a0 u2 M# z. y       HexConv = hexVar
4 c$ E# v, W3 H" s8 @) b" m   END IF
% D: d" Z: W% t: M0 GEnd Function

8 C$ a5 C! ~8 OPrivate Function get_hxno(ghx)
5 k0 }( ^; k4 {# N7 V2 O5 W& M- d   If ghx = \"A\" Then
2 c; r6 n" q& ]- V" }8 D  N       ghx = 10
   ElseIf ghx = \"B\" Then
       ghx = 11
   ElseIf ghx = \"C\" Then
, I4 g/ V% E  v" c3 \$ |( I       ghx = 12
% t1 X3 k8 M2 }! t; j5 [4 P/ a   ElseIf ghx = \"D\" Then
       ghx = 13
0 d! b% A  i6 O   ElseIf ghx = \"E\" Then
       ghx = 14
   ElseIf ghx = \"F\" Then
" _( {7 g+ x) ]0 E: @       ghx = 15
" \0 t: k2 P- i  s% o   End If
# E: k( @* ^' I   get_hxno = ghx
End Function
: ?, n" t( B8 }0 H1 Q%>

( \6 |) v5 S- [2 _0 b<%
! Z- O, M! G7 z/ T5 R+ D2 x7 Xrandomize
num = int(7999*rnd+2000) \'计数器的值
num2 = EncryptString(num)
session(\"pwdt\")=num
- f& v& b! \$ ]/ \! A%>
" U3 M4 z1 D% J, m9 z6 S" |<form action=\"chk.asp\" method=post>
请输入验证码： <input>
<img src=\"count.asp?sksid=<%=num2%>\"> <input type=submit value=提交>
</form>
3 l! {2 f+ c+ T4 z& L9 w
/ @' j6 ?4 M& X1 z. R; kchk.asp
<%
0 x5 H1 I, A" W$ Gif trim(request.form(\"pwds\"))<>trim(session(\"pwdt\")) then
$ `7 C& n% l& i- i9 k& X0 _- \%>
* e; h  d( u8 b7 \/ u+ ?7 h& Z" K- n输入错误： 应该为：<%=session(\"pwdt\")%>，可你输入的是:<%=request.form(\"pwds\")%>
<%
" ~3 ?8 i5 u/ }: y$ eelse
%>
# c! m# ~0 ]9 u5 g2 D输入正确
  {+ X0 A4 w- I: ]% U1 x<%end if%>

1 S1 x' F" b  i. t$ ]) A0 ucount.asp
) l& q& @9 T& b5 Z$ A; i<!--#include file=\"num.asp\"-->
9 X, w5 J8 I; E<%
\'### To encrypt/decrypt include this code in your page
, R1 o2 H/ H9 R! m. E5 o, ^$ k) V, d\'### strMyEncryptedString = EncryptString(strString)
\'### strMyDecryptedString = DeCryptString(strMyEncryptedString)
- i4 I, W* L, ?: O1 Q) X$ I$ w\'### You are free to use this code as long as credits remain in place
* O1 p/ d" w5 ^\'### also if you improve this code let me know.
0 v. l0 S. c: ]! L1 s
: M, y7 R' h* I' Y! d. z2 HPrivate Function EncryptString(strString)
\'####################################################################
) L3 E! t! U# @2 C" t( t\'### Crypt Function (C) 2001 by Slavic Kozyuk grindkore@yahoo.com ###
\'### Arguments: strString <--- String you wish to encrypt ###
\'### Output: Encrypted HEX string ###
9 |4 L9 u" g  h# O) H% t( e\'####################################################################
4 T5 P$ B, Q  F4 K
   Dim CharHexSet, intStringLen, strTemp, strRAW, i, intKey, intOffSet
9 e, X  B) i2 R4 ]. t) M0 X8 c+ ?   Randomize Timer
" t; E. o& O" R" w, J3 {5 U
: I7 P3 J& w( P3 r7 b- @* a   intKey = Round((RND * 1000000) + 1000000) \'##### Key Bitsize
" C" `! p- ~7 u8 _1 |- Y& R6 D   intOffSet = Round((RND * 1000000) + 1000000) \'##### KeyOffSet Bitsize
  K3 ~% I1 D' _. E
2 {  N9 q0 E1 \$ p- e   If IsNull(strString) = False Then
' t8 [2 U% m  C: Y; X       strRAW = strString
7 t7 i: x  Z  r/ s1 a% Y1 n       intStringLen = Len(strRAW)
& P; L8 g4 b' G0 p0 ^! r* Q
       For i = 0 to intStringLen - 1
* b3 ]" w% T' }% g) i- ~; v           strTemp = Left(strRAW, 1)
           strRAW = Right(strRAW, Len(strRAW) - 1)
  v# F9 M9 p  Y           CharHexSet = CharHexSet & Hex(Asc(strTemp) * intKey)& Hex(intKey)
) |1 K5 p9 K) N8 w       Next
4 n; N& N# g5 q# C! @7 c
       EncryptString = CharHexSet & \"|\" & Hex(intOffSet + intKey) & \"|\" & Hex(intOffSet)
   Else
  g" |8 t2 Y5 N" R4 m       EncryptString = \"\"
6 N5 M# H+ o" h6 h6 _  D4 W/ Z   End If
$ Q6 [% A/ R; h5 A' L* [( J8 uEnd Function
* A2 i2 u& G7 P) H/ Q. {% _8 k

" T! I6 X0 E( _  W0 Z9 dPrivate Function DeCryptString(strCryptString)
5 G9 w5 j$ g; c$ P8 ?5 r. V\'####################################################################
\'### Crypt Function (C) 2001 by Slavic Kozyuk grindkore@yahoo.com ###
\'### Arguments: Encrypted HEX stringt ###
\'### Output: Decrypted ASCII string ###
* ]  }! |) M6 w: G1 W  \\'####################################################################
' g; C$ r5 J, q& h1 R+ b\'### Note this function uses HexConv() and get_hxno() functions ###
\'### so make sure they are not removed ###
7 z9 c* S! T) ~9 `! L2 [\'####################################################################

   Dim strRAW, arHexCharSet, i, intKey, intOffSet, strRawKey, strHexCrypData
1 A0 M* }* Z" J. p
% V0 x/ c5 p! y( C9 p- Z8 J7 d   strRawKey = Right(strCryptString, Len(strCryptString) - InStr(strCryptString, \"|\"))
8 P. ]) P/ e9 M/ V, Y1 y   intOffSet = Right(strRawKey, Len(strRawKey) - InStr(strRawKey,\"|\"))
   intKey = HexConv(Left(strRawKey, InStr(strRawKey, \"|\") - 1)) - HexConv(intOffSet)
7 I; X4 r) N, x% t1 J! _0 m/ r+ e( t7 @  R   strHexCrypData = Left(strCryptString, Len(strCryptString) - (Len(strRawKey) + 1))

   arHexCharSet = Split(strHexCrypData, Hex(intKey))
$ b' d" X7 Y/ y3 T$ W
* f0 q+ m+ s  M  u- e8 Z3 N   For i=0 to UBound(arHexCharSet)
       strRAW = strRAW & Chr(HexConv(arHexCharSet(i))/intKey)
0 I+ A+ |* d$ X" o   Next
8 O% F$ T* z% g5 g: ^4 E7 Q8 G) ?
8 r5 C4 K! x+ s* G1 d' l1 R& `   DeCryptString = strRAW
3 I, A! _9 N" l2 j4 g' r' kEnd Function

& C1 p/ H+ M: L6 D2 s, f8 I1 n  T7 q
7 F1 I: N: D5 P1 y5 x& d: L4 h7 \Private Function HexConv(hexVar)
/ N: z. Y* m0 ]  S! f, d8 N   Dim hxx, hxx_var, multiply
; o2 E% z6 T! q/ |* [   IF hexVar <> \"\" THEN
4 P! A/ }8 U3 R# v. h8 |( t  I$ P       hexVar = UCASE(hexVar)
/ d# |0 o2 O8 U0 A$ D       hexVar = StrReverse(hexVar)
/ V# |1 A- @. l* U       DIM hx()
       REDIM hx(LEN(hexVar))
1 r& i, D1 {) a+ \8 W       hxx = 0
       hxx_var = 0
       FOR hxx = 1 TO LEN(hexVar)
9 y; n. v# c2 |4 c0 p           IF multiply = \"\" THEN multiply = 1
           hx(hxx) = mid(hexVar,hxx,1)
' i& @+ G) }3 p( u2 i, U4 c1 i           hxx_var = (get_hxno(hx(hxx)) * multiply) + hxx_var
. C  F* }; Z1 @9 \2 X+ x9 k           multiply = (multiply * 16)
4 z6 a- o* S, u1 e( b( E+ |: B( P; F. Y       NEXT
" H9 T! ?- o6 ^' L$ x, i- T       hexVar = hxx_var
! y4 G/ @9 J4 m" t4 x4 a       HexConv = hexVar
   END IF
End Function

( \/ p/ Y( L& k; J7 `' fPrivate Function get_hxno(ghx)
( C- N4 [! E8 P4 H) u1 x  e: m   If ghx = \"A\" Then
       ghx = 10
   ElseIf ghx = \"B\" Then
. s8 N4 b1 S. X; A7 U       ghx = 11
+ p  e- M+ C3 r   ElseIf ghx = \"C\" Then
* O  _( V8 k6 Q0 V6 v       ghx = 12
" @0 m) u- K0 Y8 D' p; K   ElseIf ghx = \"D\" Then
       ghx = 13
   ElseIf ghx = \"E\" Then
9 B  S1 G' ]; u+ [7 X" k4 q       ghx = 14
   ElseIf ghx = \"F\" Then
       ghx = 15
9 w! `. J# k) Z   End If
   get_hxno = ghx
End Function
%>


<%
Dim Image
Dim Width, Height
Dim num
! \" H. G0 N* ^. |Dim digtal
3 O& E& \- h, ?7 A6 A9 d; A  CDim Length
Dim sort
Length = 4 \'自定计数器长度

Redim sort( Length )

num=cint(DeCryptString(request.querystring(\"sksid\")))
digital = \"\"
For I = 1 To Length -Len( num ) \'补0
   digital = digital & \"0\"
8 |8 w; ?! R& y  O- M* oNext
For I = 1 To Len( num )
   digital = digital & Mid( num, I, 1 )
! I5 J$ k8 t( O' ]' ]* XNext
For I = 1 To Len( digital )
+ `) k4 x2 Q' O& B3 P$ z   sort(I) = Mid( digital, I, 1 )
Next
" y  V0 G0 j: W, D$ b) DWidth = 8 * Len( digital ) \'图像的宽度
Height = 10 \'图像的高度，在本例中为固定值
) ]4 [3 o+ ^% {# u- l7 d
Response.ContentType=\"image/x-xbitmap\"

" T( @' e* F8 `1 u) G- Q- ^8 }hc=chr(13) & chr(10)
: K8 @  a) ?' e0 n- t
1 s. d" A3 I5 K: }9 n+ FImage = \"#define counter_width \" & Width & hc
! X( h* x: }( o* WImage = Image & \"#define counter_height \" & Height & hc
. ]1 ?8 f- R; Q1 @9 l1 O% {Image = Image & \"static unsigned char counter_bits[]={\" & hc

( i, c8 t  Y" v1 C* CFor I = 1 To Height
   For J = 1 To Length
       Image = Image & a(sort(J),I) & \",\"
/ x. H! V7 Q% Y   Next
Next
8 n  S$ ^3 W0 @2 B" i& h' Q6 x" M
" A! \) K% o, ]) ]Image = Left( Image, Len( Image ) - 1 ) \'去掉最后一个逗号
Image = Image & \"};\" & hc
%>
<%
$ q8 w* `/ D7 R  [Response.Write Image
2 m. h: M; @. u%>

num.asp
" f3 Y6 E' M0 }3 g" x& c2 q<%
& U, T0 r6 b0 A! J2 R  j5 S) Q! ?3 j( n! ~Dim a(10,10)
! i) U$ \) I/ A0 O( m& u
; O/ l- s8 \, x  f6 u% ra(0,1) = \"0x3c\" \'数字0
: }2 m- q. I, j& A7 E: _a(0,2) = \"0x66\"
8 S9 I+ ~% X" pa(0,3) = \"0xc3\"
4 Q) {& o; F5 W7 }6 y+ i& G! W* ga(0,4) = \"0xc3\"
a(0,5) = \"0xc3\"
! `. p) |, B2 `a(0,6) = \"0xc3\"
a(0,7) = \"0xc3\"
a(0,8) = \"0xc3\"
) M' G7 n9 w/ p, Ma(0,9) = \"0x66\"
a(0,10)= \"0x3c\"

, c; J# p+ Y% X9 v+ Wa(1,1) = \"0x18\" \'数字1
4 m/ C1 _. Y: R- N$ o) }% M3 Pa(1,2) = \"0x1c\"
a(1,3) = \"0x18\"
a(1,4) = \"0x18\"
a(1,5) = \"0x18\"
7 v" a- h/ M& ^; C; ~3 V, ba(1,6) = \"0x18\"
a(1,7) = \"0x18\"
4 o0 O  S+ N1 k2 z* G0 R8 Y! W5 ta(1,8) = \"0x18\"
. n9 z+ K: Q( K& y  A1 K8 {; ta(1,9) = \"0x18\"
a(0,10)= \"0x7e\"

7 D: x1 Q' |" Y9 P6 m# W
. k& H: B6 @, A2 X$ Z; B! ga(2,1) = \"0x3c\" \'数字2
+ K9 j2 g+ ?/ ~+ f9 L- Wa(2,2) = \"0x66\"
a(2,3) = \"0x60\"
a(2,4) = \"0x60\"
$ J7 C" ]4 C$ d( S2 I2 ka(2,5) = \"0x30\"
a(2,6) = \"0x18\"
5 e1 K4 i$ _9 |1 H) A4 O. _a(2,7) = \"0x0c\"
# K2 @1 H- Y( _# E9 V5 Q; [a(2,8) = \"0x06\"
a(2,9) = \"0x06\"
9 W2 B! P! X2 g1 ]9 qa(2,10)= \"0x7e\"

a(3,1) = \"0x3c\" \'数字3
: a, G' x8 _" S4 |a(3,2) = \"0x66\"
- }4 v( h( N- ^' Oa(3,3) = \"0xc0\"
: Y1 s5 K# F$ w' @% x; o# ja(3,4) = \"0x60\"
a(3,5) = \"0x1c\"
. P' {' X7 k' D+ S; U5 S8 h0 ta(3,6) = \"0x60\"
a(3,7) = \"0xc0\"
9 D7 E+ N7 `( u$ W( }: Sa(3,8) = \"0xc0\"
+ P7 M+ F6 h, a3 d& Za(3,9) = \"0x66\"
a(3,10)= \"0x38\"
# m5 F& d7 T6 b( l+ E! D  n
a(4,1) = \"0x38\" \'数字4
a(4,2) = \"0x3c\"
a(4,3) = \"0x36\"
7 \$ l; D6 S1 `+ E: `9 s( Ca(4,4) = \"0x33\"
a(4,5) = \"0x33\"
a(4,6) = \"0x33\"
a(4,7) = \"0xff\"
9 N9 B5 h8 i+ _) L; K8 `3 ca(4,8) = \"0x30\"
2 j" f2 V0 ^9 L# h/ ja(4,9) = \"0x30\"
  G; I- h$ ^- P' Ga(4,10)= \"0xfe\"

6 s' N9 E4 A! ?a(5,1) = \"0xfe\" \'数字5
4 Y, ]! W% s% z. N2 K8 @. Ga(5,2) = \"0xfe\"
a(5,3) = \"0x06\"
a(5,4) = \"0x06\"
+ ]8 t) a0 W& C) t3 E' _a(5,5) = \"0x3e\"
a(5,6) = \"0x60\"
a(5,7) = \"0xc0\"
a(5,8) = \"0xc3\"
a(5,9) = \"0x66\"
2 i! b! h0 _5 ~) ja(5,10)= \"0x3c\"
6 e) ]. [5 Q$ ~# ^* R' ~4 a
1 W* p- i& f- K) L* x% na(6,1) = \"0x60\" \'数字6
a(6,2) = \"0x30\"
- u1 S1 p- o+ K/ Ra(6,3) = \"0x18\"
a(6,4) = \"0x0c\"
a(6,5) = \"0x3e\"
5 ?: e7 |5 ~: r% b3 R  C; @a(6,6) = \"0x63\"
a(6,7) = \"0xc3\"
a(6,8) = \"0xc3\"
: e) p( q3 s) b$ @7 Ea(6,9) = \"0x66\"
( B* A3 h/ K" t" J2 I1 Xa(6,10) =\"0x3c\"
" l; o" Y+ n- o- E" d( T
' ^: X. m1 M+ k9 G6 ta(7,1) = \"0xff\" \'数字7
) }! u# |6 _* K1 m' Ta(7,2) = \"0xc0\"
a(7,3) = \"0x60\"
a(7,4) = \"0x30\"
% v( R. R9 F; O7 e3 ]a(7,5) = \"0x18\"
a(7,6) = \"0x18\"
; ?8 A6 X& N2 l, F$ @2 H* ea(7,7) = \"0x18\"
: J5 T: t! k' m  Q3 D! g3 B1 `a(7,8) = \"0x18\"
# z, H+ v; @/ b- E2 Ya(7,9) = \"0x18\"
; _* R- k6 s5 aa(7,10)= \"0x18\"
. ^9 m) Y4 Q9 Q
! f$ s# s' O2 u0 F/ D0 z  [a(8,1) = \"0x3c\" \'数字8
/ n: f' d' b! S! I- s/ Ra(8,2) = \"0x66\"
a(8,3) = \"0xc3\"
. x! Y; {5 f3 v5 Z5 ^$ P+ Xa(8,4) = \"0x66\"
a(8,5) = \"0x3c\"
6 b1 I2 z4 o* ^1 w4 sa(8,6) = \"0x66\"
a(8,7) = \"0xc3\"
a(8,8) = \"0xc3\"
+ `- E  }. y" g1 j7 D7 U& g6 oa(8,9) = \"0x66\"
3 Q5 N& l- Q* }- Ea(8,10)= \"0x3c\"
( A, O+ N& T9 z3 V! O% B* X) j
/ h2 ~6 T. a: M6 Qa(9,1) = \"0x3c\" \'数字9
a(9,2) = \"0x66\"
* Y8 l* ^' j4 T. t4 @a(9,3) = \"0xc3\"
4 {# b4 W  N. G/ F& Aa(9,4) = \"0xc3\"
7 b! A! r5 J+ ^a(9,5) = \"0x66\"
a(9,6) = \"0x3c\"
* q8 A5 Q% i9 W5 l; D7 X& Ra(9,7) = \"0x18\"
a(9,8) = \"0x0c\"
a(9,9) = \"0x06\"
a(9,10)= \"0x03\"

- D' [2 H6 Q2 {' i3 ?%>

分析动网的就好了.
$ \' i7 q" q5 K5 n- H* O给你一下参考代码.
7 v  ~4 g( z6 w. z6 \2 Lbody.fix跟head.fix文件动网内有,
' w1 `' ^: X) C; }0 R8 j把下边代码做成网页.然后用img src=调出来就是了.
% }: k, o: b' V; }! y' }
<%Response.buffer=true
! Y0 o1 P: Y# ZNumCode
Function NumCode()
! ]/ c. ?6 O6 i; D" v7 f5 k. J Response.Expires = -1
Response.AddHeader \"ragma\",\"no-cache\"
Response.AddHeader \"cache-ctrol\",\"no-cache\"
On Error Resume Next
Dim zNum,i,j
0 Q9 b" P2 s0 N5 s0 n8 m Dim Ados,Ados1
; S8 }' W; c2 `3 }- y6 _: C Randomize timer
zNum = CLng(8999*Rnd+1000)
session(sCode) = zNum
Dim zimg(4),NStr
NStr=cstr(zNum)
3 f! {' Z* |! @ For i=0 To 3
" M8 {! Z0 ~% }2 `- q  zimg(i)=CLng(mid(NStr,i+1,1))
: S: N9 _+ H. z9 N: C Next
0 x7 H8 q# p( h8 D; r: w6 ?& Q Dim Pos
Set Ados=Server.CreateObject(\"Adodb.Stream\")
Ados.Mode=3
2 P, k* i0 Z7 Z1 a) S Ados.Type=1
Ados.Open
" z) w; s) N" i0 k Set Ados1=Server.CreateObject(\"Adodb.Stream\")
Ados1.Mode=3
* i9 X; t% S) v2 o2 ]- m7 n Ados1.Type=1
  Z! v$ i# z1 v  ~/ P Ados1.Open
/ L& L2 P6 U/ z" W Ados.LoadFromFile(Server.mappath(\"body.Fix\"))
Ados1.write Ados.read(1280)
3 `" j  q3 Y) A' r1 b! A$ C$ k4 j For i=0 To 3
" K. B: y/ M/ A8 _4 D* n# Q  Ados.Position=(9-zimg(i))*320
  Ados1.Position=i*320
$ s+ _6 U3 k4 p, L# j8 B" o  Ados1.write ados.read(320)
' S" ?! f/ S! l, M, n6 Y* o3 W Next
0 b- W; p. K2 F; Y Ados.LoadFromFile(Server.mappath(\"head.fix\"))
Pos=lenb(Ados.read())
Ados.Position=Pos
For i=0 To 9 Step 1
+ [' T- m1 C2 P% g! r- C  For j=0 To 3
   Ados1.Position=i*32+j*320
   Ados.Position=Pos+30*j+i*120
4 x6 |& D! c- E" W4 Q   Ados.write ados1.read(30)
  Next
Next
Response.ContentType = \"image/BMP\"
Ados.Position=0
$ Z4 c  A, t6 z% X Response.BinaryWrite Ados.read()
$ X2 }3 s, t7 D( |5 A$ A; m; T+ L Ados.Close:set Ados=nothing
Ados1.Close:set Ados1=nothing
. A7 N$ \, h- g# L If Err Then session(sCode) = 9999
End Function
\'Asp code Created by BlueIdea.COM Web Team V37 2003-7-25
" Z$ C* J- `6 E) Z* g9 Y%>