作者：未知 文本的DES加密 为了对称加密的安全，将密码进行封装，先新建一个用于保存密码的类库cl： using System; using System.Text ; namespace cl { /// /// Class1 的摘要说明。 /// public class Class1 { public Class1() {
} public string getiv() { string iv="********";//八位 return iv; } public string getkey() { string key="01160129";//八位 return key; }
} } 然后新建asp.net项目（C#） 在 .aspx中 using cl; namespace test//给一个文本产生一个散列值 { /// /// computehash 的摘要说明。 /// public class computehash : System.Web.UI.Page { protected System.Web.UI.WebControls.Label Label1; protected System.Web.UI.WebControls.TextBox TextBox1; protected System.Web.UI.WebControls.Button Button1; protected System.Web.UI.WebControls.TextBox TextBox3; protected System.Web.UI.WebControls.Button Button2; protected System.Web.UI.WebControls.TextBox TextBox4; protected System.Web.UI.WebControls.Button Button3; protected System.Web.UI.WebControls.TextBox TextBox5; protected System.Web.UI.WebControls.Button Button4; protected System.Web.UI.WebControls.Button Button5; protected System.Web.UI.WebControls.Label Label2; protected System.Web.UI.WebControls.TextBox TextBox7; protected System.Web.UI.WebControls.Label Label3; protected System.Web.UI.WebControls.TextBox TextBox8; protected System.Web.UI.WebControls.TextBox TextBox9; protected System.Web.UI.WebControls.Label Label4; protected System.Web.UI.WebControls.Button Button6; protected System.Web.UI.WebControls.Label Label5; protected System.Web.UI.WebControls.TextBox TextBox2; private void Page_Load(object sender, System.EventArgs e) { // 在此处放置用户代码以初始化页面 }
#region Web 窗体设计器生成的代码 override protected void OnInit(EventArgs e) { // // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。 // InitializeComponent(); base.OnInit(e); } /// /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// private void InitializeComponent() { this.Button2.Click += new System.EventHandler(this.Button2_Click); this.Button1.Click += new System.EventHandler(this.Button1_Click); this.Button3.Click += new System.EventHandler(this.Button3_Click); this.Button4.Click += new System.EventHandler(this.Button4_Click); this.Button5.Click += new System.EventHandler(this.Button5_Click); this.Button6.Click += new System.EventHandler(this.Button6_Click); this.Load += new System.EventHandler(this.Page_Load);
} #endregion
private void Button1_Click(object sender, System.EventArgs e) { byte[] bt=UTF8Encoding.UTF8.GetBytes(TextBox1.Text );//UTF8需要对Text的引用 MD5CryptoServiceProvider objMD5; objMD5=new MD5CryptoServiceProvider (); byte[] output=objMD5.ComputeHash (bt); TextBox2.Text =BitConverter.ToString (output); }
private void Button2_Click(object sender, System.EventArgs e) { byte[] bt=UTF8Encoding.UTF8.GetBytes(TextBox1.Text );//UTF8需要对Text的引用 MD5CryptoServiceProvider objMD5; objMD5=new MD5CryptoServiceProvider (); byte[] output=objMD5.ComputeHash (bt); TextBox4.Text =BitConverter.ToString (output); }
private void Button3_Click(object sender, System.EventArgs e) { Class1 cl=new Class1 (); string iv1=cl.getiv (); string key1=cl.getkey ();
byte[] iv=UTF8Encoding.UTF8 .GetBytes (iv1); byte[] key=UTF8Encoding.UTF8 .GetBytes (key1); byte[] source=UTF8Encoding.UTF8 .GetBytes (TextBox1.Text ); //定义加密对象 DESCryptoServiceProvider objdes; objdes=new DESCryptoServiceProvider (); //设置加密对象值 objdes.IV =iv; objdes.Key =key; //创建加密器对象 ICryptoTransform objEncryptor; objEncryptor=objdes.CreateEncryptor (objdes.Key ,objdes.IV ); //准备将加密的文本写入secret.txt中 FileStream objfs; objfs=new FileStream (MapPath("secret.txt"),FileMode.Create ,FileAccess.Write ); //写入 CryptoStream cryptostream; cryptostream=new CryptoStream (objfs,objEncryptor,CryptoStreamMode.Write ); cryptostream.Write (source,0,source.Length ); cryptostream.Close (); }
private void Button4_Click(object sender, System.EventArgs e) { Class1 cl=new Class1 (); string iv1=cl.getiv (); string key1=cl.getkey (); byte[] iv=UTF8Encoding.UTF8 .GetBytes (iv1); byte[] key=UTF8Encoding.UTF8 .GetBytes (key1); byte[] source=UTF8Encoding.UTF8 .GetBytes (TextBox1.Text ); //定义加密对象 DESCryptoServiceProvider objdes; objdes=new DESCryptoServiceProvider (); //设置加密对象值 objdes.IV =iv; objdes.Key =key; //创建加密器对象 ICryptoTransform objEncryptor; objEncryptor=objdes.CreateEncryptor (objdes.Key ,objdes.IV ); //写到内存 MemoryStream ms=new MemoryStream (); CryptoStream cs=new CryptoStream (ms,objEncryptor,CryptoStreamMode.Write ); cs.Write (source,0,source.Length ); cs.FlushFinalBlock (); ms.Close (); TextBox5.Text =BitConverter.ToString (ms.ToArray ());
}
private void Button5_Click(object sender, System.EventArgs e) { DSACryptoServiceProvider objdsa; objdsa=new DSACryptoServiceProvider (); byte[] source=UTF8Encoding.UTF8 .GetBytes (TextBox1.Text ); //公开秘钥 TextBox8.Text =objdsa.ToXmlString (false); //私有秘钥 TextBox9.Text =objdsa.ToXmlString (true); //数字签名 TextBox7.Text =BitConverter.ToString (objdsa.SignData (source)); }
} }
