WEBFORM加密，利用MD5和SHA
密碼加密MD5和SHA兩種
html:
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="source" runat="server" TextMode="SingleLine"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="MD5加密" onclick="Button1_Click" /><br />
<asp:Button ID="Button2" runat="server" Text="SHA256加密" onclick="Button2_Click" /><br />
<asp:Button ID="Button3" runat="server" Text="SHA512加密" onclick="Button3_Click" /><br />
<asp:label id="md5_1" runat="server"></asp:label><br />
<asp:label id="md5_2" runat="server"></asp:label><br />
</div>
</form>
</body>
cs:
//using須先加入
using System.Security.Cryptography;
using System.Text;
protected void Button1_Click(object sender, EventArgs e)
{
//獲取要加密的字段，並轉化為Byte[]數組
byte[] data = System.Text.Encoding.Unicode.GetBytes(source.Text.ToCharArray());
//建立加密服務
System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
//加密Byte[]數組
byte[] result = md5.ComputeHash(data);
//將加密後的數組轉化為字段
string sResult = System.Text.Encoding.Unicode.GetString(result);
//顯示出來
md5_1.Text = "MD5普通加密：" + sResult.ToString() + "<br/>";
//作為密碼方式加密
string EnPswdStr = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(source.Text.ToString(), "MD5");
//顯示出來
md5_2.Text = "MD5密碼加密：" + EnPswdStr + "<br/>";
}
//其實兩種就是加密，密碼加密能用就是了，不過彷彿不推薦
protected void Button2_Click(object sender, EventArgs e)
{
//獲取要加密的字段，並轉化為Byte[]數組
byte[] data = System.Text.Encoding.Unicode.GetBytes(source.Text.ToCharArray());
//建立一個SHA256
SHA256 sha256 = new SHA256CryptoServiceProvider();
//進行SHA256加密
byte[] result = sha256.ComputeHash(data);
//把加密後的字串從Byte[]轉為字串
string enresult = Convert.ToBase64String(result);
//輸出結果
Response.Write("SHA256加密: " + enresult);
}
protected void Button3_Click(object sender, EventArgs e)
{
//建立一個SHA512
SHA512 sha512 = new SHA512CryptoServiceProvider();
//進行SHA512加密
string resultSha512 = Convert.ToBase64String(sha512.ComputeHash(Encoding.Default.GetBytes(source.Text)));
//輸出結果
Response.Write("SHA512加密: " + resultSha512);
}
//SHA512好像比較厲害
參考來源：
1.https://dotblogs.com.tw/mrsunboss/2013/04/07/99955#MD5
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