Generate Keys : Cryptography « Development « ASP.NET Tutorial
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- Cryptography
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Security.Cryptography" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void Page_Load()
{
lblAES.Text = GetSequence(64);
lblSHA1.Text = GetSequence(128);
}
private string GetSequence(int length)
{
byte[] buffer = new byte[length/2];
RNGCryptoServiceProvider provider = new RNGCryptoServiceProvider();
provider.GetBytes(buffer);
StringBuilder builder = new StringBuilder(length);
for (int i = 0; i < buffer.Length; i++)
builder.Append(string.Format("{0:X2}", buffer[i]));
return builder.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Generate Keys</title>
</head>
<body>
<form id="form1" runat="server">
<div>
AES:
<asp:Label
id="lblAES"
Runat="server" />
<br /><br />
SHA1:
<asp:Label
id="lblSHA1"
Runat="server" />
</div>
</form>
</body>
</html>