我已经在我的 asp.net 网络表单中使用这个实现了记住我的选项，
protected void LBtnSubmit_Click(object sender, EventArgs e)
{
if (this.ChkRememberme != null && this.ChkRememberme.Checked == true)
{
HttpCookie cookie = new HttpCookie(TxtUserName.Text, TxtPassword.Text);
cookie.Expires.AddYears(1);
Response.Cookies.Add(cookie);
}
}
我做对了吗？任何建议.. 我正在使用 Windows 身份验证，我是 not using asp.net membership..
【问题讨论】：
标签： asp.net cookies remember-me
而不是直接将用户名和密码存储在cookie中，而是将用户名和密码的哈希值和salt存储在cookie中，然后当您对cookie进行身份验证时，检索给定用户名的密码，重新创建使用密码和相同的盐进行哈希并进行比较。
创建哈希就像将密码和盐值一起存储在一个字符串中一样简单，将字符串转换为字节数组，计算字节数组的哈希（使用 MD5 或您喜欢的任何内容）并将生成的哈希转换为一个字符串（可能通过 base64 编码）。
下面是一些示例代码：
// Create a hash of the given password and salt.
public string CreateHash(string password, string salt)
{
// Get a byte array containing the combined password + salt.
string authDetails = password + salt;
byte[] authBytes = System.Text.Encoding.ASCII.GetBytes(authDetails);
// Use MD5 to compute the hash of the byte array, and return the hash as
// a Base64-encoded string.
var md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
byte[] hashedBytes = md5.ComputeHash(authBytes);
string hash = Convert.ToBase64String(hashedBytes);
return hash;
}
// Check to see if the given password and salt hash to the same value
// as the given hash.
public bool IsMatchingHash(string password, string salt, string hash)
{
// Recompute the hash from the given auth details, and compare it to
// the hash provided by the cookie.
return CreateHash(password, salt) == hash;
}
// Create an authentication cookie that stores the username and a hash of
// the password and salt.
public HttpCookie CreateAuthCookie(string username, string password, string salt)
{
// Create the cookie and set its value to the username and a hash of the
// password and salt. Use a pipe character as a delimiter so we can
// separate these two elements later.
HttpCookie cookie = new HttpCookie("YourSiteCookieNameHere");
cookie.Value = username + "|" + CreateHash(password, salt);
return cookie;
}
// Determine whether the given authentication cookie is valid by
// extracting the username, retrieving the saved password, recomputing its
// hash, and comparing the hashes to see if they match. If they match,
// then this authentication cookie is valid.
public bool IsValidAuthCookie(HttpCookie cookie, string salt)
{
// Split the cookie value by the pipe delimiter.
string[] values = cookie.Value.Split('|');
if (values.Length != 2) return false;
// Retrieve the username and hash from the split values.
string username = values[0];
string hash = values[1];
// You'll have to provide your GetPasswordForUser function.
string password = GetPasswordForUser(username);
// Check the password and salt against the hash.
return IsMatchingHash(password, salt, hash);
}
【讨论】：
我不会将用户密码存储在 cookie 中...而是将用户 ID 和 IP 地址存储在 cookie 中。
【讨论】：
我不会将 ip / 用户 ID 存储在 cookie 中。会话劫持将非常容易，我的意思是我知道我同事的用户名/IP，我可以将该 cookie 添加到我的消息中，然后我可以处理我同事的会话。
【讨论】：