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using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Pqc.Asn1
{
/**
* See https://datatracker.ietf.org/doc/draft-uni-qsckeys-sphincsplus/00/ for details.
* ASN.1 Encoding for a
* SphincsPlus public key for fully populated:
* <pre>
* SPHINCSPPLUSPublicKey := SEQUENCE {
* pkseed OCTET STRING, --n-byte public key seed
* pkroot OCTET STRING --n-byte public hypertree root
* }
* </pre>
*/
public sealed class SphincsPlusPublicKey
: Asn1Encodable
{
public static SphincsPlusPublicKey GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is SphincsPlusPublicKey sphincsPlusPublicKey)
return sphincsPlusPublicKey;
return new SphincsPlusPublicKey(Asn1Sequence.GetInstance(obj));
}
public static SphincsPlusPublicKey GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return GetInstance(Asn1Sequence.GetInstance(taggedObject, declaredExplicit));
}
private readonly byte[] m_pkseed;
private readonly byte[] m_pkroot;
public SphincsPlusPublicKey(byte[] pkseed, byte[] pkroot)
{
m_pkseed = pkseed;
m_pkroot = pkroot;
}
private SphincsPlusPublicKey(Asn1Sequence seq)
{
m_pkseed = Arrays.Clone(Asn1OctetString.GetInstance(seq[0]).GetOctets());
m_pkroot = Arrays.Clone(Asn1OctetString.GetInstance(seq[1]).GetOctets());
}
public byte[] GetPkroot() => Arrays.Clone(m_pkroot);
public byte[] GetPkseed() => Arrays.Clone(m_pkseed);
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector();
v.Add(new DerOctetString(m_pkseed));
v.Add(new DerOctetString(m_pkroot));
return new DerSequence(v);
}
}
}
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