49 lines
1.3 KiB
C#
49 lines
1.3 KiB
C#
using System.Security.Cryptography;
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using System.Text;
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namespace MareSynchronosShared.Utils;
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public static class StringUtils
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{
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public static string GenerateRandomString(int length, string? allowableChars = null)
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{
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if (string.IsNullOrEmpty(allowableChars))
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allowableChars = @"ABCDEFGHJKLMNPQRSTUVWXYZ0123456789";
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// Generate random data
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var rnd = RandomNumberGenerator.GetBytes(length);
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// Generate the output string
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var allowable = allowableChars.ToCharArray();
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var l = allowable.Length;
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var chars = new char[length];
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for (var i = 0; i < length; i++)
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chars[i] = allowable[rnd[i] % l];
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return new string(chars);
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}
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public static string Sha256String(string input)
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{
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using var sha256 = SHA256.Create();
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return BitConverter.ToString(sha256.ComputeHash(Encoding.UTF8.GetBytes(input))).Replace("-", "", StringComparison.OrdinalIgnoreCase);
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}
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}
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public static class ListUtils
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{
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private static Random rng = new();
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public static void Shuffle<T>(this IList<T> list)
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{
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int n = list.Count;
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while (n > 1)
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{
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n--;
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int k = rng.Next(n + 1);
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T value = list[k];
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list[k] = list[n];
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list[n] = value;
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}
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}
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} |