[研究][ASP.NET]「 指定的初始化向量 (IV) 不符合此演算法的區塊大小」之解決
2022-04-17
環境：Visual Studio 2022 + ASP.NET + WebForm + Web Application + C#
之前寫程式遇到「 指定的初始化向量 (IV) 不符合此演算法的區塊大小」
Rijndael IV size doesn't match block size
那到底區塊大小應該多少？
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true"
CodeBehind="Default.aspx.cs" Inherits="WebApplication3.Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
Key:<asp:Label ID="Label_Key" runat="server"></asp:Label><br />
IV:<asp:Label ID="Label_IV" runat="server"></asp:Label><br />
Key Size:<asp:Label ID="Label_KeySize" runat="server"></asp:Label><br />
Rijndael IV size (block size) :<asp:Label ID="Label_IVSize" runat="server">
</asp:Label><br />
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
</div>
</form>
</body>
</html>
|
Default.aspx.cs
using System;
using System.Security.Cryptography;
namespace WebApplication3
{
public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
using (RijndaelManaged rijAlg = new RijndaelManaged())
{
rijAlg.GenerateKey();
rijAlg.GenerateIV();
Label_Key.Text = System.Text.Encoding.Unicode.GetString(rijAlg.Key);
Label_IV.Text = System.Text.Encoding.Unicode.GetString(rijAlg.IV);
Label_KeySize.Text = Label_Key.Text.Length.ToString();
Label_IVSize.Text = Label_IV.Text.Length.ToString();
}
}
}
}
|
測試
rijAlg.Key = System.Text.Encoding.Unicode.GetBytes("1234567890123456");
rijAlg.IV = System.Text.Encoding.Unicode.GetBytes("12345678");
|
(完)
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