一、生成 string 对应的 MD5 码
cs
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/// <summary>
/// 生成 string 对应的 MD5 码
/// </summary>
/// <param name="str">需要转换的字符串 string：用于登录认证时，str = username + 线下传递的key + DateTime.Now.Ticks.ToString() </param>
/// <returns>转换后的 MD5 码</returns>
public static string GetMD5FromString(string str)
{
byte[] data = System.Security.Cryptography.MD5.HashData(System.Text.Encoding.UTF8.GetBytes(str));
System.Text.StringBuilder sBuilder = new();
for (int i = 0; i < data.Length; i++)
{
sBuilder.Append(data[i].ToString("x2"));
}
return sBuilder.ToString().ToUpper();
}
二、 生成 string 对应的 Pbkdf2 码
cs
复制代码
/// <summary>
/// derive a 256-bit subkey (use HMACSHA256 with 100 iterations)
/// </summary>
/// <param name="str">需要转换的字符串 string：用于登录认证时，通常为 username</param>
/// <param name="password">线下传递的key</param>
/// <param name="Ticks">用于登录认证时，通常为 DateTime.Now.Ticks.ToString()，用于检测登录认证是否超时</param>
/// <returns>转换后的 Pbkdf2 码</returns>
public static string GetPbkdf2FromString(string str, string password, string Ticks)
{
string hashed = Convert.ToBase64String(Microsoft.AspNetCore.Cryptography.KeyDerivation.KeyDerivation.Pbkdf2(
password: password,
salt: System.Text.Encoding.UTF8.GetBytes(str + Ticks),
prf: Microsoft.AspNetCore.Cryptography.KeyDerivation.KeyDerivationPrf.HMACSHA256,
iterationCount: 100,
numBytesRequested: 256 / 8));
return hashed;
}