81 lines
2.9 KiB
C#
81 lines
2.9 KiB
C#
/******************************************************************************/
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/* SlunkCrypt, by LoRd_MuldeR <MuldeR2@GMX.de> */
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/* This work has been released under the CC0 1.0 Universal license! */
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/******************************************************************************/
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Threading.Tasks;
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using com.muldersoft.slunkcrypt.gui.utils;
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namespace com.muldersoft.slunkcrypt.gui.process
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{
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public static class PasswordGen
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{
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private static readonly TimeSpan TIMEOUT = TimeSpan.FromSeconds(180);
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private const string COMMAND_PASSWRD = "-p";
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// =============================================================================
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// Exception classes
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// =============================================================================
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public class GenerationFailedException : IOException
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{
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public GenerationFailedException(string message) : base(message)
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{
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}
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}
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// =============================================================================
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// Public methods
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// =============================================================================
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public static async Task<string> GeneratePassword(int length)
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{
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if (length <= 0)
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{
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throw new ArgumentOutOfRangeException("Password length must be a positive value!");
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}
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using (FileStream executableFile = ExecutableHelper.GetExecutableFile())
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{
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string[] arguments = new string[] { COMMAND_PASSWRD, string.Format("{0:D}", length) };
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Tuple<int, string[]> result = await ProcessRunner.ExecAsnyc(executableFile.Name, arguments, null, null, ProcessPriorityClass.BelowNormal, TIMEOUT);
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if (result.Item1 == 0)
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{
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foreach (string password in result.Item2)
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{
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if ((password.Length >= length) && (!IsWeakPassword(password)))
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{
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return password;
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}
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}
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}
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throw new GenerationFailedException("Failed to generate password string!");
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}
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}
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public static bool IsWeakPassword(string password)
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{
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int flags = 0;
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if (!string.IsNullOrEmpty(password))
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{
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foreach (char c in password)
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{
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if (char.IsLetter(c))
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{
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flags |= char.IsUpper(c) ? 0x2 : 0x1;
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}
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else
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{
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flags |= char.IsDigit(c) ? 0x8 : 0x4;
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}
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}
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}
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return (flags != 0xF);
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}
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}
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}
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