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using System;
using Org.BouncyCastle.Asn1.X509;
namespace Org.BouncyCastle.Asn1.Cmp
{
/**
* <pre>
* KemBMParameter ::= SEQUENCE {
* kdf AlgorithmIdentifier{KEY-DERIVATION, {...}},
* len INTEGER (1..MAX),
* mac AlgorithmIdentifier{MAC-ALGORITHM, {...}}
* }
* </pre>
*/
public class KemBMParameter
: Asn1Encodable
{
public static KemBMParameter GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is KemBMParameter kemBMParameter)
return kemBMParameter;
return new KemBMParameter(Asn1Sequence.GetInstance(obj));
}
public static KemBMParameter GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) =>
new KemBMParameter(Asn1Sequence.GetInstance(taggedObject, declaredExplicit));
private readonly AlgorithmIdentifier m_kdf;
private readonly DerInteger m_len;
private readonly AlgorithmIdentifier m_mac;
private KemBMParameter(Asn1Sequence seq)
{
int count = seq.Count;
if (count != 3)
throw new ArgumentException("Bad sequence size: " + count, nameof(seq));
m_kdf = AlgorithmIdentifier.GetInstance(seq[0]);
m_len = DerInteger.GetInstance(seq[1]);
m_mac = AlgorithmIdentifier.GetInstance(seq[2]);
}
public KemBMParameter(AlgorithmIdentifier kdf, DerInteger len, AlgorithmIdentifier mac)
{
m_kdf = kdf ?? throw new ArgumentNullException(nameof(kdf));
m_len = len ?? throw new ArgumentNullException(nameof(len));
m_mac = mac ?? throw new ArgumentNullException(nameof(mac));
}
public KemBMParameter(AlgorithmIdentifier kdf, long len, AlgorithmIdentifier mac)
: this(kdf, new DerInteger(len), mac)
{
}
public virtual AlgorithmIdentifier Kdf => m_kdf;
public virtual DerInteger Len => m_len;
public virtual AlgorithmIdentifier Mac => m_mac;
/**
* <pre>
* KemBMParameter ::= SEQUENCE {
* kdf AlgorithmIdentifier{KEY-DERIVATION, {...}},
* len INTEGER (1..MAX),
* mac AlgorithmIdentifier{MAC-ALGORITHM, {...}}
* }
* </pre>
*
* @return a basic ASN.1 object representation.
*/
public override Asn1Object ToAsn1Object() => new DerSequence(m_kdf, m_len, m_mac);
}
}
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