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Clean up

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Tyrrrz 2026-02-27 14:32:27 +02:00
parent 3391e755fc
commit 7ff2347df1
1 changed files with 12 additions and 5 deletions
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17
DiscordChatExporter.Gui/Services/SettingsService.TokenEncryptionConverter.cs
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@ -85,14 +85,21 @@ public partial class SettingsService
// Layout: nonce (12 bytes) | paddingLength (1 byte) | tag (16 bytes) | cipher (paddingLength + tokenData.Length)
var data = new byte[29 + paddingLength + tokenData.Length];
RandomNumberGenerator.Fill(data.AsSpan(0, 12)); // nonce
// Nonce
RandomNumberGenerator.Fill(data.AsSpan(0, 12));
// Padding length
data[12] = (byte)paddingLength;
var cipherSource = data.AsSpan(29);
RandomNumberGenerator.Fill(cipherSource[..paddingLength]); // random padding
tokenData.CopyTo(cipherSource[paddingLength..]); // token
// Padding
RandomNumberGenerator.Fill(data.AsSpan(29, paddingLength));
// Token data
tokenData.CopyTo(data.AsSpan(29 + paddingLength));
using var aes = new AesGcm(Key.Value, 16);
aes.Encrypt(data.AsSpan(0, 12), cipherSource, cipherSource, data.AsSpan(13, 16));
aes.Encrypt(data.AsSpan(0, 12), data.AsSpan(29), data.AsSpan(29), data.AsSpan(13, 16));
writer.WriteStringValue(Prefix + Convert.ToHexStringLower(data));
}