自己写的DES加密解密 ASP.NET(C#)

自己写的简单DES加密加密 public partial class _Default : System.Web.UI.Page { private static byte[] Key64 = { 42, 16, 93, 156, 78, 4, 218, 32 }; private static byte[] IV64 = { 55, 103, 246, 79, 36, 99, 167, 3 }; protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { string p = Server.MapPath("~/wcn/"); int i; FileStream fin = new FileStream(p+TextBox1.Text, FileMode.Open, FileAccess.Read); FileStream fout = new FileStream(p+TextBox2.Text, FileMode.OpenOrCreate, FileAccess.Write); FileStream skey = new FileStream(p + "key.txt", FileMode.OpenOrCreate, FileAccess.ReadWrite); FileStream siv = new FileStream(p + "key.txt", FileMode.OpenOrCreate, FileAccess.ReadWrite); fout.SetLength(0); byte[] bin = new byte[100]; long rdlen = 0; long totlen = fin.Length; int len; DES des = new DESCryptoServiceProvider(); des.Key = Key64; des.IV = IV64; TextBox3.Text = des.Key[0].ToString(); StreamWriter w = new StreamWriter(skey); w.Write(des.Key[0]); w.Flush(); for (i = 0; i < 8; i++) { TextBox3.Text = TextBox3.Text + "," + des.Key[i].ToString(); //StreamWriter w = new StreamWriter(skey); w.Write(","+des.Key[i]); w.Flush(); } CryptoStream encStream = new CryptoStream(fout, des.CreateEncryptor(), CryptoStreamMode.Write); while (rdlen < totlen) { len = fin.Read(bin, 0, 100); encStream.Write(bin, 0, len); rdlen = rdlen + len; } encStream.Close(); fout.Close(); fin.Close(); } protected void Button3_Click(object sender, EventArgs e) { string p = Server.MapPath("~/wcn/"); FileStream fin = new FileStream(p + TextBox4.Text, FileMode.Open, FileAccess.Read); FileStream fout = new FileStream(p + TextBox5.Text, FileMode.OpenOrCreate, FileAccess.Write); fout.SetLength(0); byte[] bin = new byte[100]; long rdlen = 0; long totlen = fin.Length; int len; DES des = new DESCryptoServiceProvider(); des.Key = Key64; des.IV = IV64; CryptoStream decStream = new CryptoStream(fout, des.CreateDecryptor(), CryptoStreamMode.Write); while (rdlen < totlen) { len = fin.Read(bin, 0, 100); decStream.Write(bin, 0, len); rdlen = rdlen + len; } decStream.Close(); fout.Close(); fin.Close(); } }