using API.Hashing.Interfaces;
using System.Security.Cryptography;
using System.Text;

namespace API.Hashing
{
	public class Pbkdf2 : IHashingAlgorithm
	{
		private const int KeySize = 512;
		private const int Iterations = 250000;
		private readonly HashAlgorithmName _algorithmName = HashAlgorithmName.SHA512;

		public string hash(string password, out byte[] salt)
		{
			salt = RandomNumberGenerator.GetBytes(KeySize);

			byte[] hash = Rfc2898DeriveBytes.Pbkdf2(Encoding.UTF8.GetBytes(password), salt, Iterations, _algorithmName, KeySize);

			return Convert.ToHexString(hash);
		}
		public string hash(string password, byte[] salt)
		{
			byte[] hash = Rfc2898DeriveBytes.Pbkdf2(Encoding.UTF8.GetBytes(password), salt, Iterations, _algorithmName, KeySize);

			return Convert.ToHexString(hash);
		}
	}
}