📄 asymmetricread.aspx

📁 asp.net技术内幕的书配源码

💻 ASPX

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<%@ Page Language="C#" %>
<%@ Import Namespace="System.Globalization" %>
<%@ Import Namespace="System.Security.Cryptography" %>

<script language="C#" runat=server>

byte[] Convert2ByteArray(string strInput) 
{
	int intCounter;
	char[] arrChar;
	
	arrChar = strInput.ToCharArray();
	byte[] arrByte = new byte[arrChar.Length];
	
	for (intCounter=0; intCounter <= arrByte.Length-1; intCounter++)
		arrByte[intCounter] = Convert.ToByte(arrChar[intCounter]);
		
	return arrByte;
}

byte[] ConvertHexArray( string  strInput )
{
	int intCounter;
	string[] arrString;

	arrString = strInput.Split('-');
	byte[] arrByte = new byte[arrString.Length - 1];
	   
	for ( intCounter = 0; intCounter <= arrByte.Length - 1; intCounter++)
	{
		arrByte[intCounter] = byte.Parse( arrString[intCounter], NumberStyles.HexNumber );
	} 
	return arrByte;
}

void Button_Click( object s, EventArgs e ) {
	byte[] arrInput;
	DSACryptoServiceProvider objDSA;
	string  strPublicKey;
	byte[] arrDigitalSignature;

	arrInput = Convert2ByteArray( txtInput.Text );
	arrDigitalSignature = ConvertHexArray( txtSignature.Text );
	objDSA = new DSACryptoServiceProvider();
	objDSA.FromXmlString( txtPublicKey.Text );
	lblVerify.Text = objDSA.VerifyData( arrInput, arrDigitalSignature ).ToString();
}

</Script>

<html>
<head><title>AsymmetricRead.aspx</title></head>
<body>

<H2>Verify Digital Signature</h2>

<form Runat="Server">
Message:
<br>
<asp:TextBox
  ID="txtInput"
  TextMode="Multiline"
  Columns="60"
  Rows="3"
  Runat="Server" />
<p>
Digital Signature:
<br>
<asp:TextBox
  ID="txtSignature"
  TextMode="Multiline"
  Columns="60"
  Rows="4"
  Runat="Server" />
<p>
Public Key:
<br>
<asp:TextBox
  ID="txtPublicKey"
  TextMode="Multiline"
  Columns="60"
  Rows="10"
  Runat="Server" />
<p>
<asp:Button
  Text="Verify Signature!"
  OnClick="Button_Click"
  Runat="Server" />
<p>
Verified?
<br>
<asp:Label
  ID="lblVerify"
  Runat="Server" />

</form>
</body>
</html>

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