44 lines
1.1 KiB
C#
44 lines
1.1 KiB
C#
using System.Security.Cryptography;
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using System.Text;
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namespace Phantom.Utils.Cryptography;
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public static class TokenGenerator {
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private const string AllowedCharacters = "25679BCDFGHJKMNPQRSTWXYZ";
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private static readonly HashSet<char> AllowedCharacterSet = new (AllowedCharacters);
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private static readonly Base24 Base24 = new (AllowedCharacters);
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public static string Create(int length) {
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char[] result = new char[length];
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for (int i = 0; i < length; i++) {
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result[i] = AllowedCharacters[RandomNumberGenerator.GetInt32(AllowedCharacters.Length)];
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}
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return new string(result);
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}
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public static byte[] GetBytesOrThrow(string token) {
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if (token.Length == 0) {
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throw new ArgumentOutOfRangeException(nameof(token), "Invalid token (empty).");
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}
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foreach (char c in token) {
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if (!AllowedCharacterSet.Contains(c)) {
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throw new ArgumentOutOfRangeException(nameof(token), "Invalid token: " + token);
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}
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}
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return Encoding.ASCII.GetBytes(token);
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}
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public static string EncodeBytes(byte[] bytes) {
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return Base24.Encode(bytes);
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}
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public static byte[] DecodeBytes(string token) {
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return Base24.Decode(token);
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}
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}
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