本文章有两文件组成
test.asp 测试演示文件
clsrsa.asp 实现rsa加密与解密的vbs类文件
下面是代码:
1. test.asp
<%
rem 文章标题:在asp中通过vbs类实现rsa加密与解密
rem 收集整理:yanek
rem 联系:aspboy@263.net
%
<%Option Explicit%
<!--#INCLUDE FILE="clsRSA.asp"--
<%
Dim LngKeyE
Dim LngKeyD
Dim LngKeyN
Dim StrMessage
Dim ObjRSA
If Not Request.Form = "" Then
LngKeyE = Request.Form("KeyE")
LngKeyD = Request.Form("KeyD")
LngKeyN = Request.Form("KeyN")
StrMessage = Request.Form("Message")
Set ObjRSA = New clsRSA
Select Case Request.Form("Action")
Case "Generate Keys"
Call ObjRSA.GenKey()
LngKeyE = ObjRSA.PublicKey
LngKeyD = ObjRSA.PrivateKey
LngKeyN = ObjRSA.Modulus
Case "Encrypt"
ObjRSA.PublicKey = LngKeyE
ObjRSA.Modulus = LngKeyN
StrMessage = ObjRSA.Encode(StrMessage)
Case "Decrypt"
ObjRSA.PrivateKey = LngKeyD
ObjRSA.Modulus = LngKeyN
StrMessage = ObjRSA.Decode(StrMessage)
End Select
Set ObjRSA = Nothing
End If
%
<HTML
<HEAD
<TITLERSA Cipher Demonstration</TITLE
</HEAD
<BODY
<H1RSA Cipher Demonstration</H1
<P
You will first need to generate your public/privage key-pair
before you can encrypt/decrypt messages.
</P
<FORM method="post"
<TABLE
<TR
<TDPublic Key</TD
<TD<INPUT name="KeyE" value="<%=Server.HTMLEncode(LngKeyE)%"</TD
<TD rowspan="3"
<INPUT type="Submit" name="Action" value="Generate Keys"
</TD
</TR
<TR
<TDPrivate Key</TD
<TD<INPUT name="KeyD" value="<%=Server.HTMLEncode(LngKeyD)%"</TD
</TR
<TR
<TDModulus</TD
<TD<INPUT name="KeyN" value="<%=Server.HTMLEncode(LngKeyN)%"</TD
</TR
<TR
<TD colspan="3"
Test Message:<BR
<TEXTAREA name="Message" cols="50" rows="7"<%=Server.HTMLEncode(StrMessage)%</TEXTAREA
</TD
</TR
<TR
<TD align="right" colspan="3"
<INPUT type="Submit" name="Action" value="Encrypt"
<INPUT type="Submit" name="Action" value="Decrypt"
</TD
</TR
</TABLE
</FORM
</BODY
</HTML
clsrsa.asp
<%
rem 实现rsa加密与解密的vbs类文件
rem 文章标题:在asp中通过vbs类实现rsa加密与解密
rem 收集整理:yanek
rem 联系:aspboy@263.net
' RSA Encryption Class
'
' .PrivateKey
' Your personal private key. Keep this hidden.
'
' .PublicKey
' Key for others to encrypt data with.
'
' .Modulus
' Used with both public and private keys when encrypting
' and decrypting data.
'
' .GenKey()
' Creates Public/Private key set and Modulus
'
' .Crypt(pLngMessage, pLngKey)
' Encrypts/Decrypts message and returns
' as a string.
'
' .Encode(pStrMessage)
' Encrypts message and returns in double-hex format
'
' .Decode(pStrMessage)
' Decrypts message from double-hex format and returns a string
'
Class clsRSA
Public PrivateKey
Public PublicKey
Public Modulus
Public Sub GenKey()
Dim lLngPhi
Dim q
Dim p
Randomize
Do
Do
' 2 random primary numbers (0 to 1000)
Do
p = Rnd * 1000 1
Loop While Not IsPrime(p)
Do
q = Rnd * 1000 1
Loop While Not IsPrime(q)
' n = product of 2 primes
Modulus = p * q 1
' random decryptor (2 to n)
PrivateKey = Rnd * (Modulus - 2) 1 + 2
lLngPhi = (p - 1) * (q - 1) 1
PublicKey = Euler(lLngPhi, PrivateKey)
Loop While PublicKey = 0 Or PublicKey = 1
' Loop if we can't crypt/decrypt a byte
Loop While Not TestCrypt(255)
End Sub
Private Function TestCrypt(ByRef pBytData)
Dim lStrCrypted
lStrCrypte
