C# 加密与解密,经典MD5加密
效果图:
1.首先建一个解决方案与一个测试项目:
2.首先在头部using System.Security.Cryptography;引入MD5
3.源码:
/// <summary>
/// 32位MD5加密
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
string str = txtPwd.Text;
MD5 md= MD5.Create();
byte [] bytes= md.ComputeHash(System.Text.Encoding.UTF8.GetBytes(str));
foreach (byte b in bytes)
{
txtMd5.Text += b.ToString();
}
}
2. 效果图
首先引入命名空间:using System.Security.Cryptography;
源码:
#region 加密
private void btnKey_Click(object sender, EventArgs e)
{
txtShow.Text = Encode(txtSetKey.Text, txtKey.Text, txtIV.Text);
}
//加密
public static string Encode(string data, string Key_64, string Iv_64)
{
string KEY_64 = Key_64;// "VavicApp";
string IV_64 = Iv_64;// "VavicApp";
try
{
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
int i = cryptoProvider.KeySize;
MemoryStream ms = new MemoryStream();
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);
StreamWriter sw = new StreamWriter(cst);
sw.Write(data);
sw.Flush();
cst.FlushFinalBlock();
sw.Flush();
return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
}
catch (Exception x)
{
return x.Message;
}
}
#endregion
3.解密效果图
源码：
#region 解密
private void btnStr_Click(object sender, EventArgs e)
{
txtShow.Text = Decode(txtRedKey.Text, txtKey.Text, txtIV.Text);
}
//解密
public static string Decode(string data, string Key_64, string Iv_64)
{
string KEY_64 = Key_64;// "VavicApp";密钥
string IV_64 = Iv_64;// "VavicApp"; 向量
try
{
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
byte[] byEnc;
byEnc = Convert.FromBase64String(data); //把需要解密的字符串转为8位无符号数组
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
MemoryStream ms = new MemoryStream(byEnc);
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cst);
return sr.ReadToEnd();
}
catch (Exception x)
{
return x.Message;
}
}
#endregion