📄 hash.aspx

📁 asp.net技术内幕的书配源码

💻 ASPX

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<%@ Import Namespace="System.Security.Cryptography" %>

<Script Runat="Server">

Function Convert2ByteArray( strInput As String ) As Byte()
  Dim intCounter As Integer
  Dim arrChar As Char()

  arrChar = strInput.ToCharArray()
  Dim arrByte( arrChar.Length - 1 ) As Byte
  For intCounter = 0 To arrByte.Length - 1
    arrByte( intCounter ) = Convert.ToByte( arrChar( intCounter ) )
  Next
  Return arrByte
End Function

Sub Button_Click( s AS Object, e As EventArgs )
  Dim arrHashInput As Byte()
  Dim arrHashOutput As Byte()
  Dim objMD5 As MD5CryptoServiceProvider

  objMD5 = New MD5CryptoServiceProvider
  arrHashInput = Convert2ByteArray( txtInput.Text )
  arrHashOutput = objMD5.ComputeHash( arrHashInput )
  lblOutput.Text = BitConverter.ToString( arrHashOutput )
End Sub

</Script>

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

<form Runat="Server">

<h2>Generate MD5 Hash</h2>

<b>Enter text to hash:</b>
<br>
<asp:TextBox
  id="txtInput"
  TextMode="Multiline"
  Columns="50"
  Rows="10"
  Runat="Server" />
<p>
<asp:Button
  Text="Compute Hash!"
  OnClick="Button_Click"
  Runat="Server" />
<p>
<b>Hash value:</b>
<br>
<asp:Label
  ID="lblOutput"
  Runat="Server" />

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

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