返回列表 发帖

[原创文章] 关于国内某知名大学网站加密算法的研究

原创作者:柔肠寸断 [3.A.S.T]  http://www.3ast.com.cm
( y! E) b7 M! E$ c3 X, Z原始出处:http://www.3ast.com.cm
: H: x( \% ?. U+ A, n3 n) V! m2 J! C6 y
看不懂的直接绕过
0 z# o" {7 R2 y* v# Q加密前为:hwy123456  `% w: n! L2 b) R' w
加密后为0F9C1C7A2EE76EBB5C1F4D7526CC4F883F4E1 J1 z6 g3 ?4 U$ }0 M

3 a! v$ }0 j! H- o3 T3 L" m============================================7 V& m7 j  A" s# S
上面是当时自己校内的心情。现在已经解破出来了,分享给大家
" A, R8 `6 a/ N* E( t( X# L也就不隐瞒大家什么了,这个是国内某知名大学的后台加密算法
0 }+ v6 ~. x* T以下是RSA算法文件( ?+ t$ e4 \7 l; F, O8 }
/ J& |! k3 ?+ s; s9 P
文件名RSA.ASP
. M8 n8 D" _# h0 o7 R/ F===============================================
8 Y. o/ p2 T' e3 U6 ]9 B, I- l1 p# L<% : y2 O! V, w" S: }& N* R
Class clsRSA
* y$ V1 M/ u0 z; T4 Q) CPublic PrivateKey 5 N' V1 K/ |+ ~$ v, Q$ C3 ^$ p
Public PublicKey 9 I4 a; q- ]* M) B$ h& g
Public Modulus ) t/ [0 X2 m. N( N" S+ F  q# v
Public Function Crypt(pLngMessage, pLngKey)
4 u0 ~8 W$ L; m( B! kOn Error Resume Next
. Q' \$ G2 B# f, q* U6 PDim lLngMod
. f6 |$ F4 m) u; u  D2 o% nDim lLngResult 1 O6 a0 }. |7 Q9 ~$ Q( ?
Dim lLngIndex
+ U3 c( [3 l" s8 E4 N: ]5 O+ mIf pLngKey Mod 2 = 0 Then
' m8 G" {( }( y# A  ^6 V' c# g7 s1 A0 plLngResult = 1 ( S6 b) }, d. v' k$ X) b! q  d
For lLngIndex = 1 To pLngKey / 2
0 \6 E# l2 l' \7 l  C2 AlLngMod = (pLngMessage ^ 2) Mod Modulus " S* N% A+ k# M1 h
' Mod may error on key generation
* K; c# M' B/ ^1 N$ W3 f5 M- ?lLngResult = (lLngMod * lLngResult) Mod Modulus
- v, }6 K. w2 }6 y: L9 mIf Err Then Exit Function * f9 C# i: z1 S! g
Next : F3 y7 W" o& U& M9 C+ n
Else
) x9 l7 I  `3 U  ]5 ~, V, @lLngResult = pLngMessage
6 G+ i2 g+ i+ P, d! EFor lLngIndex = 1 To pLngKey / 2
- Y) |  M: |+ E, C- hlLngMod = (pLngMessage ^ 2) Mod Modulus
9 ~/ A# h5 F+ J, K* EOn Error Resume Next " ?) {5 K( H/ o  ~3 X6 U
' Mod may error on key generation # `, I& l# f! {. a
lLngResult = (lLngMod * lLngResult) Mod Modulus
3 v) l9 T8 v' [; FIf Err Then Exit Function
2 s6 P7 Z7 G- [1 [4 M4 FNext
. f5 }7 O9 M  T8 z- D2 {4 _% q% kEnd If 9 I# v1 `, n6 E, W
Crypt = lLngResult ( X: g, C& g5 L. T1 v" k
End Function
! A4 @. e' x; }! L; x( @
$ M" f2 [" c+ p; P; dPublic Function Encode(ByVal pStrMessage)
; ?5 K+ ^( X; u& E7 RDim lLngIndex - v. ~8 N  Y0 g
Dim lLngMaxIndex
3 n# q$ Y. a: O* V9 N9 rDim lBytAscii 8 m6 H: q! i. O4 `0 _' B
Dim lLngEncrypted   h- J# X  V8 A3 u4 B  F+ W! V0 A" }
lLngMaxIndex = Len(pStrMessage) 9 L5 S: f- F8 c( B5 Q; y
If lLngMaxIndex = 0 Then Exit Function ! ~0 F- {2 j8 b! q
For lLngIndex = 1 To lLngMaxIndex
" R! F/ m* p" k/ N1 z: KlBytAscii = Asc(Mid(pStrMessage, lLngIndex, 1))
6 ^9 W2 ]7 U3 P2 K# f1 DlLngEncrypted = Crypt(lBytAscii, PublicKey) ! ?3 J; q; n( i' P
Encode = Encode & NumberToHex(lLngEncrypted, 4)
7 H; D  Y$ `4 o  I" U0 {8 h  `Next
% f6 @! q  s/ k. d' hEnd Function
; R% y; [4 U  L! nPublic Function Decode(ByVal pStrMessage)
7 G0 i. y1 r+ @# O+ e0 m/ CDim lBytAscii , j) N) [+ y" I% U$ R5 L  M0 [9 ]2 f
Dim lLngIndex
3 W/ j% N+ j1 t. i$ a, uDim lLngMaxIndex
: Y/ E; K) @! M3 @& P2 |Dim lLngEncryptedData 3 f% a, b" X5 ~) Z, B7 H
Decode = "" 0 J6 `* {6 `; j
lLngMaxIndex = Len(pStrMessage)
1 v/ i. o9 I6 y- _* J$ G/ e$ [: DFor lLngIndex = 1 To lLngMaxIndex Step 4 - e+ Z; N2 p* s* d. a" G2 j
lLngEncryptedData = HexToNumber(Mid(pStrMessage, lLngIndex, 4)) 4 o+ d, i) D' x
lBytAscii = Crypt(lLngEncryptedData, PrivateKey) 6 l3 |% T4 S6 J: o$ ?+ Y
Decode = Decode & Chr(lBytAscii) ( l( W6 K. t) G( L+ [$ y
Next % M) P4 d% f  F1 {
End Function
9 s8 r: ?+ f6 }. c! M+ R5 r  bPrivate Function NumberToHex(ByRef pLngNumber, ByRef pLngLength)
/ ]- T' y. M3 U! O. bNumberToHex = Right(String(pLngLength, "0") & Hex(pLngNumber), pLngLength) + T! X8 W4 d- y! d6 \; j
End Function
" {) Z; u# @8 c- c, [3 h2 }; o9 M! mPrivate Function HexToNumber(ByRef pStrHex) * Z7 s" x) f6 j! s; e, Q5 R! N
HexToNumber = CLng("&h" & pStrHex)
% c, L8 n& \/ ?- j1 WEnd Function
& G+ U' A! ~6 _. r3 E, V# yEnd Class
: P8 D$ E- n3 |2 k9 W; Ffunction Encryptstr(Message) " |: s! [8 w  F" r8 f
Dim LngKeyE
& Z. P& r1 U+ x, C: Y# KDim LngKeyD
4 e- T) v: d! U1 d" LDim LngKeyN $ z, v) n2 H$ v' _( H0 w: @
Dim StrMessage % H) {5 F3 v; ?$ A+ D* T
Dim ObjRSA . k8 f6 F3 G+ w# M# |0 ~1 u
LngKeyE = "32823"
4 I9 H& f+ [8 ?2 b7 D. `; p; f% Z2 GLngKeyD = "20643"
7 m* C, _# t5 L2 E8 J$ VLngKeyN = "29893"
' [0 a  Z" c/ fStrMessage = Message
0 M! a5 j* }. z' Y3 z% A+ G5 SSet ObjRSA = New clsRSA ; d( e: K2 v4 H0 U; H8 I. S' P
ObjRSA.PublicKey = LngKeyE
1 N" K5 ]/ p7 w* \ObjRSA.Modulus = LngKeyN ! _4 h' ~% P4 J! F7 ]& s
Encryptstr = ObjRSA.Encode(StrMessage) * b& Z% S. z) R7 M
Set ObjRSA = Nothing   \% D# Y2 J7 q* B( t2 ^
end function
2 B0 }/ _" f3 v) E9 a. [Function Decryptstr(Message)
8 x" t' U5 Y/ hDim LngKeyE
& Q, U% E2 N8 u) |% X) GDim LngKeyD
/ P7 N6 `' O3 x$ K; G6 G* hDim LngKeyN 3 {8 k: E8 x, h8 [" J
Dim StrMessage
/ K1 o( X, h$ k* q- c1 J9 C, o6 k0 qDim ObjRSA ; C7 u( T6 T) X7 y3 q) M
LngKeyE = "32823" ' n. D+ Q5 X0 ]7 l6 i$ F2 n0 V% y
LngKeyD = "20643" ; Q) Q6 c/ Q- G# g3 f  q" O
LngKeyN = "29893" 6 y2 ]0 q  e( g3 ]( r- d% K' ^
StrMessage = Message 3 K% h' D0 P" C( J1 f* Q/ J/ m1 E
Set ObjRSA = New clsRSA ' t$ B; k5 J, B, u
ObjRSA.PrivateKey =LngKeyD
- m/ s. H& U3 c! fObjRSA.Modulus=LngKeyN
7 [* f: e7 E! L  I5 t  _decryptstr=ObjRSA.Decode(StrMessage) 8 P5 X6 `& z2 f5 Y* K6 u+ C
Set ObjRSA = Nothing
) a( ]( r5 k" G$ N, u. U3 t! uend function ! K: I' J1 m2 {1 N" ~- A
%>3 n; c' j- z+ m: \2 V
===============================================
9 f( j8 `* V, y' G# t* u8 d
) c: n1 B9 n5 c9 e还有一个用于测试这段代码的test.asp+ L+ ^0 F: B0 G
有兴趣的自己搭建个IIS测试下7 }( M. N- W7 e2 k8 W" V' I
<!--#INCLUDE FILE="RSA.asp"--> * y+ g, M7 p: C. G+ G0 g' h4 O9 ^4 ^
<%
9 X3 T# g" y- S; J4 j% z6 sfunction Encryptstr(Message)
1 x. |* n" R$ [6 [! {) I( p3 O4 NDim LngKeyE
2 \4 H. o  l+ i* F1 b0 g0 bDim LngKeyD
+ W& w$ s* w* B* n$ HDim LngKeyN ( @4 y3 y3 l9 v8 f! q
Dim StrMessage ; s5 u2 F6 N; [( {- I
Dim ObjRSA 1 W  s  y( [  C( g
LngKeyE = "32823"
, z, q3 U; W! q! YLngKeyD = "20643" 3 Z  r% D; M3 s
LngKeyN = "29893" 7 B: K9 D) P) C% g3 w1 }& S! f, V
StrMessage = Message
5 e# M4 l5 M1 F' O, p  |& USet ObjRSA = New clsRSA + K" `; y, j. K3 o/ x4 f0 w2 n+ \% c
ObjRSA.PublicKey = LngKeyE 4 V4 _! R* C9 |5 S7 K& Q8 N( W
ObjRSA.Modulus = LngKeyN
) e8 w) k' N! MEncryptstr = ObjRSA.Encode(StrMessage) # o8 d# j. o! c
Set ObjRSA = Nothing
0 F6 ]( t3 ?# o4 M7 zend function / {' q/ q& N7 {2 u8 S, m8 W
function decryptstr(Message)
: `3 c& n) }- ADim LngKeyE
4 ]0 a& ?! U8 M7 c) JDim LngKeyD 8 Y% v! l5 M1 M& M" @5 `
Dim LngKeyN
( k. ?' y/ g# ?Dim StrMessage
; j' t" h! L# @5 NDim ObjRSA
0 U% r" m% G; jLngKeyE = "32823"
* y6 N4 w0 S" _$ |LngKeyD = "20643"
# }0 y; G1 V& d9 ]2 S% |LngKeyN = "29893" 6 s. w9 y" w" d& u  [7 n
StrMessage = Message
' G# {( _6 H( }$ _Set ObjRSA = New clsRSA
; |  ^7 [+ ~. U3 A" KObjRSA.PrivateKey =LngKeyD
* ?/ E7 L7 L2 V( H; o) MObjRSA.Modulus=LngKeyN
8 a+ j( p; d0 c' w: N3 A. ~6 N+ Ldecryptstr=ObjRSA.Decode(StrMessage)
4 t! a0 K: y) J% i* ^. s% LSet ObjRSA = Nothing
1 ]7 n( F6 [5 F  v1 ^( r7 f1 jend function . ]. j) Q- J* Q* k
dim last,first
! B! ?& `7 ~1 Q3 S4 Bfirst="!@#$%^&*()"
( X1 t. C0 p3 ^- |" l0 fResponse.Write "加密前为:"&first ) a/ V. \  L: w' b3 L* ]
last=Encryptstr(first) ! n' m- A2 V- [  M/ j
Response.Write "加密后为"&last * c0 n3 Z; [8 E
Response.Write "解密后为" &decryptstr(last)
! J8 \# O: S# B' j6 }! ~%> ==============================================
: N: j( ]4 a6 q. ]: Q剩下的就是字符的对照表了
# _. ?7 H) X- v2 @1 h===================字符集================
; g1 v* [: E0 p0 {6 E: e* q1 j' D1_____6EBB
3 e& ~% R; n' i% r0 P0 q2_____5C1F  c5 N: L7 z+ m: q
3_____4D75# q" E& W' O$ Q9 D5 w5 G+ P
4_____26CC
1 b, e" T/ [& X, ~" q6 h# @. b5_____4F88
4 ]# r1 v. ^" J6 _. b( a  v: c- Y6_____3F4E
" [+ E& m# J  @/ q+ L  Z7_____0A9D# R5 t3 J. R/ o3 j0 |4 }0 X
8_____1A1C# N, D6 d* X' r" Y
9_____6D20% _/ ^& P' C$ d% V5 q* O) |
0_____1089
; V: d+ n% ]: E; a" O8 ma_____0F3E3 e1 F# o8 d3 S) k" ]
b_____3159
6 B) n% b/ m, S$ d  nc_____35173 o: o( r! y. ^! c" L3 K
d_____419C
4 f" I# J3 R5 W* t% q# ne_____615C- ~- }. l( R: y5 y
f_____556F- I5 ~* Z2 m# L2 R
g_____2B7F; A3 s) Z8 G! o" y, V6 S. @
h_____0F9C/ I+ [( g% ~! w( M7 j* ~! c( \
i_____00FA( Y5 P- W! k; t  M( R0 q4 }' _
j_____5A50
5 V2 X$ l& p, l% T+ G2 mk_____2850
* J& c1 v( y% s0 Y: o* P$ f1 Sl_____3E7B
+ j$ Z6 f  h- um_____71C5* _1 I) X( k' v) w
n_____1FC89 Q3 O6 h! d' F8 [2 t0 A
o_____74C1
: t1 b: v. t: t' g2 J/ fp_____5FB8
, n, J& M6 w# D6 M0 s7 f% Tq_____6085
9 ~; U) ^( _+ E& Q  V) k5 h2 Xr_____3AC4. `  t1 ]/ ~2 A
s_____2F507 Q2 u: i. z3 A0 u
t_____36F8
; J6 `6 X9 \: i- xu_____7010
( D1 S( w- {6 Yv_____0B427 W2 d4 w6 t/ @5 Y9 l3 ^2 Q$ \1 l
w_____1C7A
) h9 o9 k# P, e* K* @+ X* }0 Dx_____16F87 j6 J0 D0 e' c# d
y_____2EE7) n5 U* U7 ~. b$ ^. n$ P3 T& ^3 j
z_____5CF3
+ u4 Z. y1 J% C3 k!_____62333 B8 B2 |* T$ A6 J4 |: W3 @
@_____3A45
( B3 X: C+ S& v6 W$ f+ W#_____2291& q  K+ \/ c4 Q$ J0 }. p; y
$_____5D5C
6 M% w/ S' ^* p& f- g3 ?# q%_____09B9
$ X" P! r% Q; \9 }( Y( v# |- t^_____43EA; t+ n' U! C6 q8 E& ^5 d8 Y6 y; a
&_____62B9* l+ d7 r# o9 u% t5 b
*_____63012 V# @" N  M1 R! k4 J
(_____4659
  l! G# x, R, x- `/ m)_____5C82
希望做站长本人的学生请点击
http://www.3ast.com/viewthread.php?tid=13841
QQ790653916只负责SEO以及收费教学等方面联系,他人勿扰

于智者同行,你会不同凡响;与高人为伍,你会登上巅峰

收藏了。。。。。。。。

TOP

返回列表