init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/Pkcs/PbeS2Parameters.cs

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+using System;
+
+namespace Org.BouncyCastle.Asn1.Pkcs;
+
+public class PbeS2Parameters : Asn1Encodable
+{
+	private readonly KeyDerivationFunc func;
+
+	private readonly EncryptionScheme scheme;
+
+	public KeyDerivationFunc KeyDerivationFunc => func;
+
+	public EncryptionScheme EncryptionScheme => scheme;
+
+	public static PbeS2Parameters GetInstance(object obj)
+	{
+		if (obj == null)
+		{
+			return null;
+		}
+		if (obj is PbeS2Parameters result)
+		{
+			return result;
+		}
+		return new PbeS2Parameters(Asn1Sequence.GetInstance(obj));
+	}
+
+	public PbeS2Parameters(KeyDerivationFunc keyDevFunc, EncryptionScheme encScheme)
+	{
+		func = keyDevFunc;
+		scheme = encScheme;
+	}
+
+	[Obsolete("Use GetInstance() instead")]
+	public PbeS2Parameters(Asn1Sequence seq)
+	{
+		if (seq.Count != 2)
+		{
+			throw new ArgumentException("Wrong number of elements in sequence", "seq");
+		}
+		Asn1Sequence asn1Sequence = (Asn1Sequence)seq[0].ToAsn1Object();
+		if (asn1Sequence[0].Equals(PkcsObjectIdentifiers.IdPbkdf2))
+		{
+			func = new KeyDerivationFunc(PkcsObjectIdentifiers.IdPbkdf2, Pbkdf2Params.GetInstance(asn1Sequence[1]));
+		}
+		else
+		{
+			func = new KeyDerivationFunc(asn1Sequence);
+		}
+		scheme = EncryptionScheme.GetInstance(seq[1].ToAsn1Object());
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		return new DerSequence(func, scheme);
+	}
+}