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using System;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1.Pkcs
{
public class RC2CbcParameter
: Asn1Encodable
{
public static RC2CbcParameter GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is RC2CbcParameter rc2CbcParameter)
return rc2CbcParameter;
return new RC2CbcParameter(Asn1Sequence.GetInstance(obj));
}
private readonly DerInteger m_version;
private readonly Asn1OctetString m_iv;
private RC2CbcParameter(Asn1Sequence seq)
{
int count = seq.Count, pos = 0;
if (count < 1 || count > 2)
throw new ArgumentException("Bad sequence size: " + count, nameof(seq));
m_version = Asn1Utilities.ReadOptional(seq, ref pos, DerInteger.GetOptional);
m_iv = Asn1OctetString.GetInstance(seq[pos++]);
if (pos != count)
throw new ArgumentException("Unexpected elements in sequence", nameof(seq));
}
public RC2CbcParameter(byte[] iv)
{
m_version = null;
m_iv = new DerOctetString(iv);
}
public RC2CbcParameter(int parameterVersion, byte[] iv)
{
m_version = new DerInteger(parameterVersion);
m_iv = new DerOctetString(iv);
}
public BigInteger RC2ParameterVersion => m_version?.Value;
public DerInteger RC2ParameterVersionData => m_version;
public Asn1OctetString IV => m_iv;
public byte[] GetIV() => Arrays.Clone(m_iv.GetOctets());
public override Asn1Object ToAsn1Object()
{
return m_version == null
? new DerSequence(m_iv)
: new DerSequence(m_version, m_iv);
}
}
}
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