100 lines
3.8 KiB
C#
100 lines
3.8 KiB
C#
/*
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*
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* (c) Copyright Ascensio System Limited 2010-2018
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*
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* This program is freeware. You can redistribute it and/or modify it under the terms of the GNU
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* General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html).
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* In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that
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* Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
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*
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* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
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*
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* You can contact Ascensio System SIA by email at sales@onlyoffice.com
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*
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* The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display
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* Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
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*
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* Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains
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* relevant author attributions when distributing the software. If the display of the logo in its graphic
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* form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE"
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* in every copy of the program you distribute.
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* Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
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*
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*/
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using System;
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using System.Text;
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using ASC.Common;
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using Microsoft.AspNetCore.Cryptography.KeyDerivation;
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using Microsoft.Extensions.Configuration;
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namespace ASC.Security.Cryptography
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{
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[Singletone]
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public class PasswordHasher
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{
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public PasswordHasher(IConfiguration configuration, MachinePseudoKeys machinePseudoKeys)
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{
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if (!int.TryParse(configuration["core:password:size"], out var size)) size = 256;
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Size = size;
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if (!int.TryParse(configuration["core.password.iterations"], out var iterations)) iterations = 100000;
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Iterations = iterations;
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Salt = (configuration["core:password:salt"] ?? "").Trim();
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if (string.IsNullOrEmpty(Salt))
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{
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var salt = Hasher.Hash("{9450BEF7-7D9F-4E4F-A18A-971D8681722D}", HashAlg.SHA256);
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var PasswordHashSaltBytes = KeyDerivation.Pbkdf2(
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Encoding.UTF8.GetString(machinePseudoKeys.GetMachineConstant()),
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salt,
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KeyDerivationPrf.HMACSHA256,
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Iterations,
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Size / 8);
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Salt = BitConverter.ToString(PasswordHashSaltBytes).Replace("-", string.Empty).ToLower();
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}
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}
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public int Size
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{
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get;
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private set;
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}
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public int Iterations
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{
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get;
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private set;
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}
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public string Salt
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{
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get;
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private set;
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}
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public string GetClientPassword(string password)
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{
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if (string.IsNullOrWhiteSpace(password)) password = Guid.NewGuid().ToString();
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var salt = new UTF8Encoding(false).GetBytes(Salt);
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var hashBytes = KeyDerivation.Pbkdf2(
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password,
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salt,
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KeyDerivationPrf.HMACSHA256,
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Iterations,
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Size / 8);
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var hash = BitConverter.ToString(hashBytes).Replace("-", string.Empty).ToLower();
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return hash;
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}
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}
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} |