public static byte[] HashPasswordArgon2(byte[] password, byte[] salt, byte[] associatedData = null, byte[] knownSecret = null, Argon2Algorithm algorithm = Argon2Algorithm.i, int degreeOfParallelism = 2, int memorySize = 5120, int iterations = 10, int resultLength = 256)
{
Argon2 argon2;
switch (algorithm)
{
case Argon2Algorithm.i:
argon2 = new Argon2i(password);
break;
case Argon2Algorithm.d:
argon2 = new Argon2d(password);
break;
case Argon2Algorithm.id:
default:
throw new NotSupportedException();
}
argon2.DegreeOfParallelism = degreeOfParallelism;
argon2.MemorySize = memorySize;
argon2.Iterations = iterations;
argon2.Salt = salt;
argon2.AssociatedData = associatedData;
argon2.KnownSecret = knownSecret;
var hash = argon2.GetBytes(resultLength);
argon2.Dispose();
return(hash);
}
/// <summary>
/// 指定されたパスワード、元のファイル、出力先で暗号化及び復号を非同期的に行います
/// </summary>
/// <param name="password"></param>
/// <param name="outfile"></param>
/// <returns></returns>
public virtual async Task WriteStreamAsync(string password, string readPath, string outPath, CancellationToken token)
{
try
{
switch (CryptoMode)
{
case CryptoMode.ENCRYPTION: //暗号化
await FileEncryption(password, readPath, outPath + @"\" +
Path.GetFileName(readPath) + ".safer", token);
break;
case CryptoMode.DENCRYPTION: //復号
await FileDecryption(password, readPath, outPath + @"\" +
Path.GetFileName(readPath).Replace(".safer", ""), token);
break;
}
}
catch (OperationCanceledException)
{
MessageBox.Show("操作を中止しました。", "確認", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
catch (CryptographicException)
{
if (token.IsCancellationRequested)
{
MessageBox.Show("操作を中止しました。", "確認", MessageBoxButtons.OK, MessageBoxIcon.Asterisk); return;
}
MessageBox.Show("パスワードが間違っていませんか？", "エラー", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
rijndael.Dispose();
argon2?.Dispose();
}
}
