A给B发送信息,A会将信息用A的密码进行加密,然后将加密后的字符串和原文一起发给B,然后B用B的密码进行解密,然后判断解密后的字符串和A发过来的原文比对
<form id="form1" runat="server">
随机生成密钥:<asp:Button ID="
BTncreateMY" runat="server" Text="随机生成密钥" OnClick="btncreateMY_Click" /><
br />
公钥:<asp:TextBox ID="tbxcreateMY_p
ublicKey" runat="server" TextMode="MultiLine" H
eight="59px" ReadOnly="True" Width="711px"></asp:TextBox><br />
私钥:<asp:TextBox ID="tbxcreateMY_key" runat="server" TextMode="MultiLine" Height="59px" ReadOnly="True" Width="710px"></asp:TextBox><br /><
hr />
<br />
生成签名:<br />
原文:&
amp;nbsp;
<asp:TextBox ID="tbxContent" runat="server" TextMode="MultiLine" Height="59px" Width="711px"></asp:TextBox> <br />
私钥:
<asp:TextBox ID="tbxKey" runat="server" TextMode="MultiLine" Height="59px" Width="711px"></asp:TextBox><br />
签名:
<asp:TextBox ID="tbxSign" runat="server" TextMode="MultiLine" Height="59px" ReadOnly="True" Width="711px"></asp:TextBox>
<br />
<asp:Button ID="Butto
n1" runat="server" OnClick="Button1_Click" Text="生成签名" />
<br />
<br /><hr />
<br />
验证签名:<br />
原文:<asp:TextBox ID="tbxContentYZ" runat="server" TextMode="MultiLine" Height="59px" Width="711px"></asp:TextBox><br />
公钥:<asp:TextBox ID="tb
xpublicke
yyZ" runat="server" TextMode="MultiLine" Height="59px" Width="711px"></asp:TextBox><br />
签名:<asp:TextBox ID="tbxSignYZ" runat="server" TextMode="MultiLine" Height="59px" Width="711px"></asp:TextBox>
<br />
<asp:Button ID="Button3" runat="server" OnClick="Button3_Click" Text="验证签名" />
</form>
/// <summary>
/// 生成签名
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
PRotected void Button1_Click(object sender, Event
args e)
{
DSACryptoServiceProvider objdsa = new DSACryptoServiceProvider();
objdsa.
FromXMlString(tbxKey.Text);
byte[] source =
System.Text.UTF8Encoding.UTF8.GetBytes(tbxContent.Text);
//数字签名
tbxSign.Text = B
ITConverter.ToString(objdsa.SignData(source));
}
/// <summary>
/// 随机生成密钥
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btncreateMY_Click(object sender, EventArgs e)
{
DSACryptoServiceProvider objdsa = new DSACryptoServiceProvider();
tbxcreateMY_publicKey.Text = objdsa.ToX
MLString(false);
tbxcreateMY_key.Text = objdsa.ToXmlString(true);
}
/// <summary>
/// 验证签名
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Button3_Click(object sender, EventArgs e)
{
DSACryptoServiceProvider objdsa = new DSACryptoServiceProvider();
byte[] fileHashValue = new SHA1CryptoServiceProvider()
.COMputeHash(System.Text.UTF8Encoding.UTF8.GetBytes(tbxContentYZ.Text));
string[] strSplit = tbxSignYZ.Text.Split('-');
byte[] SignedHash = new byte[strSplit.Length];
for (int i = 0; i < strSplit.Length;
i++)
SignedHash[i] = byte.Parse(strSplit[i], System.Globalization.NumberStyles.AllowHexS
PEcifier);
objdsa.F
romXmlString(tbxPublickeyYZ.Text);
bool ret = objdsa.VerifySignature(fileHashValue, SignedHash);
Response.Write(ret.ToString());
// Qcd.Core.Web.Messages.ShowDia
LOG(ret.ToString());
}