在asp中通过vbs类实现rsa加密与解密,建议入精华
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
复制代码 代码如下:
<%
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
%>
<%OptionExplicit%>
<>
<%
DimLngKeyE
DimLngKeyD
DimLngKeyN
DimStrMessage
DimObjRSA
IfNotRequest.Form=""Then
LngKeyE=Request.Form("KeyE")
LngKeyD=Request.Form("KeyD")
LngKeyN=Request.Form("KeyN")
StrMessage=Request.Form("Message")
SetObjRSA=NewclsRSA
SelectCaseRequest.Form("Action")
Case"GenerateKeys"
CallObjRSA.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)
EndSelect
SetObjRSA=Nothing
EndIf
%>
<HTML>
<HEAD>
<TITLE>RSACipherDemonstration</TITLE>
</HEAD>
<BODY>
<H1>RSACipherDemonstration</H1>
<P>
Youwillfirstneedtogenerateyourpublic/privagekey-pair
beforeyoucanencrypt/decryptmessages.
</P>
<FORMmethod="post">
<TABLE>
<TR>
<TD>PublicKey</TD>
<TD><INPUTname="KeyE"value="<%=Server.HTMLEncode(LngKeyE)%>"></TD>
<TDrowspan="3">
<INPUTtype="Submit"name="Action"value="GenerateKeys">
</TD>
</TR>
<TR>
<TD>PrivateKey</TD>
<TD><INPUTname="KeyD"value="<%=Server.HTMLEncode(LngKeyD)%>"></TD>
</TR>
<TR>
<TD>Modulus</TD>
<TD><INPUTname="KeyN"value="<%=Server.HTMLEncode(LngKeyN)%>"></TD>
</TR>
<TR>
<TDcolspan="3">
TestMessage:<BR>
<TEXTAREAname="Message"cols="50"rows="7"><%=Server.HTMLEncode(StrMessage)%></TEXTAREA>
</TD>
</TR>
<TR>
<TDalign="right"colspan="3">
<INPUTtype="Submit"name="Action"value="Encrypt">
<INPUTtype="Submit"name="Action"value="Decrypt">
</TD>
</TR>
</TABLE>
</FORM>
</BODY>
</HTML>
clsrsa.asp
复制代码 代码如下:
<%
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
'RSAEncryptionClass
'
'.PrivateKey
'Yourpersonalprivatekey.Keepthishidden.
'
'.PublicKey
'Keyforotherstoencryptdatawith.
'
'.Modulus
'Usedwithbothpublicandprivatekeyswhenencrypting
'anddecryptingdata.
'
'.GenKey()
'CreatesPublic/PrivatekeysetandModulus
'
'.Crypt(pLngMessage,pLngKey)
'Encrypts/Decryptsmessageandreturns
'asastring.
'
'.Encode(pStrMessage)
'Encryptsmessageandreturnsindouble-hexformat
'
'.Decode(pStrMessage)
'Decryptsmessagefromdouble-hexformatandreturnsastring
'
ClassclsRSA
PublicPrivateKey
PublicPublicKey
PublicModulus
PublicSubGenKey()
DimlLngPhi
Dimq
Dimp
Randomize
Do
Do
'2randomprimarynumbers(0to1000)
Do
p=Rnd*10001
LoopWhileNotIsPrime(p)
Do
q=Rnd*10001
LoopWhileNotIsPrime(q)
'n=productof2primes
Modulus=p*q1
'randomdecryptor(2ton)
PrivateKey=Rnd*(Modulus-2)1+2
lLngPhi=(p-1)*(q-1)1
PublicKey=Euler(lLngPhi,PrivateKey)
LoopWhilePublicKey=0OrPublicKey=1
'Loopifwecan'tcrypt/decryptabyte
LoopWhileNotTestCrypt(255)
EndSub
PrivateFunctionTestCrypt(ByRefpBytData)
DimlStrCrypted
lStrCrypted=Crypt(pBytData,PublicKey)
TestCrypt=Crypt(lStrCrypted,PrivateKey)=pBytData
EndFunction
PrivateFunctionEuler(ByRefpLngPHI,ByRefpLngKey)
DimlLngR(3)
DimlLngP(3)
DimlLngQ(3)
DimlLngCounter
DimlLngResult
Euler=0
lLngR(1)=pLngPHI:lLngR(0)=pLngKey
lLngP(1)=0:lLngP(0)=1
lLngQ(1)=2:lLngQ(0)=0
lLngCounter=-1
DoUntillLngR(0)=0
lLngR(2)=lLngR(1):lLngR(1)=lLngR(0)
lLngP(2)=lLngP(1):lLngP(1)=lLngP(0)
lLngQ(2)=lLngQ(1):lLngQ(1)=lLngQ(0)
lLngCounter=lLngCounter+1
lLngR(0)=lLngR(2)ModlLngR(1)
lLngP(0)=((lLngR(2)lLngR(1))*lLngP(1))+lLngP(2)
lLngQ(0)=((lLngR(2)lLngR(1))*lLngQ(1))+lLngQ(2)
Loop
lLngResult=(pLngKey*lLngP(1))-(pLngPHI*lLngQ(1))
IflLngResult>0Then
Euler=lLngP(1)
Else
Euler=Abs(lLngP(1))+pLngPHI
EndIf
EndFunction
PublicFunctionCrypt(pLngMessage,pLngKey)
OnErrorResumeNext
DimlLngMod
DimlLngResult
DimlLngIndex
IfpLngKeyMod2=0Then
lLngResult=1
ForlLngIndex=1TopLngKey/2
lLngMod=(pLngMessage^2)ModModulus
'Modmayerroronkeygeneration
lLngResult=(lLngMod*lLngResult)ModModulus
IfErrThenExitFunction
Next
Else
lLngResult=pLngMessage
ForlLngIndex=1TopLngKey/2
lLngMod=(pLngMessage^2)ModModulus
OnErrorResumeNext
'Modmayerroronkeygeneration
lLngResult=(lLngMod*lLngResult)ModModulus
IfErrThenExitFunction
Next
EndIf
Crypt=lLngResult
EndFunction
PrivateFunctionIsPrime(ByRefpLngNumber)
DimlLngSquare
DimlLngIndex
IsPrime=False
IfpLngNumber<2ThenExitFunction
IfpLngNumberMod2=0ThenExitFunction
lLngSquare=Sqr(pLngNumber)
ForlLngIndex=3TolLngSquareStep2
IfpLngNumberModlLngIndex=0ThenExitFunction
Next
IsPrime=True
EndFunction
PublicFunctionEncode(ByValpStrMessage)
DimlLngIndex
DimlLngMaxIndex
DimlBytAscii
DimlLngEncrypted
lLngMaxIndex=Len(pStrMessage)
IflLngMaxIndex=0ThenExitFunction
ForlLngIndex=1TolLngMaxIndex
lBytAscii=Asc(Mid(pStrMessage,lLngIndex,1))
lLngEncrypted=Crypt(lBytAscii,PublicKey)
Encode=Encode&NumberToHex(lLngEncrypted,4)
Next
EndFunction
PublicFunctionDecode(ByValpStrMessage)
DimlBytAscii
DimlLngIndex
DimlLngMaxIndex
DimlLngEncryptedData
Decode=""
lLngMaxIndex=Len(pStrMessage)
ForlLngIndex=1TolLngMaxIndexStep4
lLngEncryptedData=HexToNumber(Mid(pStrMessage,lLngIndex,4))
lBytAscii=Crypt(lLngEncryptedData,PrivateKey)
Decode=Decode&Chr(lBytAscii)
Next
EndFunction
PrivateFunctionNumberToHex(ByRefpLngNumber,ByRefpLngLength)
NumberToHex=Right(String(pLngLength,"0")&Hex(pLngNumber),pLngLength)
EndFunction
PrivateFunctionHexToNumber(ByRefpStrHex)
HexToNumber=CLng("&h"&pStrHex)
EndFunction
EndClass
%>
演示地址:http://www.cnaspol.com/myrsa/test.asp
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