47 lines
1.6 KiB
C#
47 lines
1.6 KiB
C#
using System;
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using System.Buffers.Text;
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using System.Linq;
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using System.Text;
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namespace Mirea.Api.Security.Services;
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public static class GeneratorKey
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{
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public static string GenerateAlphaNumeric(int size, string? excludes = null, string? includes = null)
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{
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var random = new Random();
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const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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string charsForGenerate = excludes?
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.Aggregate(chars, (current, ex) => current.Replace(ex.ToString(), string.Empty)) ?? chars;
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if (!string.IsNullOrEmpty(includes))
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charsForGenerate = includes
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.Aggregate(charsForGenerate, (current, include) =>
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current.Contains(include) ? current : current + include);
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return new string(Enumerable.Repeat(charsForGenerate, size)
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.Select(s => s[random.Next(s.Length)])
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.ToArray());
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}
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public static ReadOnlySpan<byte> GenerateBytes(int size)
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{
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var key = new byte[size];
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using var rng = System.Security.Cryptography.RandomNumberGenerator.Create();
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rng.GetNonZeroBytes(key);
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return key;
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}
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public static string GenerateBase64(int size) =>
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Convert.ToBase64String(GenerateBytes(size));
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public static string GenerateString(int size)
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{
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var randomBytes = GenerateBytes(size);
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Span<byte> utf8Bytes = new byte[Base64.GetMaxEncodedToUtf8Length(randomBytes.Length)];
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Base64.EncodeToUtf8(randomBytes, utf8Bytes, out _, out _);
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return Encoding.UTF8.GetString(utf8Bytes);
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}
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} |