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Utils.cs
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Utils.cs
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using System;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using Microsoft.AspNetCore.Cryptography.KeyDerivation;
namespace VehicleNetBackend
{
public class Utils
{
public static string SignTag(string str, string key)
{
return SignTag(str, Encoding.UTF8.GetBytes(key));
}
public static string SignTag(string str, byte[] key)
{
using (var hmac = new HMACSHA1(key))
{
return Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(str)));
}
}
public static string HashPassword(string passwd)
{
var salt = new byte[128 / 8];
RandomNumberGenerator.Fill(salt);
var saltedPasswd = KeyDerivation.Pbkdf2(passwd, salt, KeyDerivationPrf.HMACSHA1, 1000, 128 / 8);
return Convert.ToBase64String(saltedPasswd) + "|" + Convert.ToBase64String(salt);
}
public static bool ValidatePassword(string passwd, string saltedBundle)
{
var splits = saltedBundle.Split('|');
var salt = Convert.FromBase64String(splits[1]);
var saltedPasswd = KeyDerivation.Pbkdf2(passwd, salt, KeyDerivationPrf.HMACSHA1, 1000, 128 / 8);
return Convert.FromBase64String(splits[0]).SequenceEqual(saltedPasswd);
}
}
}