using System; namespace Org.BouncyCastle.Asn1.CryptoPro { public class Gost3410PublicKeyAlgParameters : Asn1Encodable { private readonly DerObjectIdentifier m_publicKeyParamSet; private readonly DerObjectIdentifier m_digestParamSet; private readonly DerObjectIdentifier m_encryptionParamSet; public DerObjectIdentifier PublicKeyParamSet => m_publicKeyParamSet; public DerObjectIdentifier DigestParamSet => m_digestParamSet; public DerObjectIdentifier EncryptionParamSet => m_encryptionParamSet; public static Gost3410PublicKeyAlgParameters GetInstance(object obj) { if (obj == null) return null; Gost3410PublicKeyAlgParameters gost3410PublicKeyAlgParameters = obj as Gost3410PublicKeyAlgParameters; if (gost3410PublicKeyAlgParameters != null) return gost3410PublicKeyAlgParameters; return new Gost3410PublicKeyAlgParameters(Asn1Sequence.GetInstance(obj)); } public static Gost3410PublicKeyAlgParameters GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) { return new Gost3410PublicKeyAlgParameters(Asn1Sequence.GetInstance(taggedObject, declaredExplicit)); } public static Gost3410PublicKeyAlgParameters GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit) { return new Gost3410PublicKeyAlgParameters(Asn1Sequence.GetTagged(taggedObject, declaredExplicit)); } private Gost3410PublicKeyAlgParameters(Asn1Sequence seq) { int count = seq.Count; int sequencePosition = 0; if (count < 2 || count > 3) throw new ArgumentException("Bad sequence size: " + count.ToString(), "seq"); m_publicKeyParamSet = DerObjectIdentifier.GetInstance(seq[sequencePosition++]); m_digestParamSet = DerObjectIdentifier.GetInstance(seq[sequencePosition++]); m_encryptionParamSet = Asn1Utilities.ReadOptional(seq, ref sequencePosition, DerObjectIdentifier.GetOptional); if (sequencePosition != count) throw new ArgumentException("Unexpected elements in sequence", "seq"); } public Gost3410PublicKeyAlgParameters(DerObjectIdentifier publicKeyParamSet, DerObjectIdentifier digestParamSet) : this(publicKeyParamSet, digestParamSet, null) { } public Gost3410PublicKeyAlgParameters(DerObjectIdentifier publicKeyParamSet, DerObjectIdentifier digestParamSet, DerObjectIdentifier encryptionParamSet) { if (publicKeyParamSet == null) throw new ArgumentNullException("publicKeyParamSet"); m_publicKeyParamSet = publicKeyParamSet; if (digestParamSet == null) throw new ArgumentNullException("digestParamSet"); m_digestParamSet = digestParamSet; m_encryptionParamSet = encryptionParamSet; } public override Asn1Object ToAsn1Object() { if (m_encryptionParamSet != null) return new DerSequence(m_publicKeyParamSet, m_digestParamSet, m_encryptionParamSet); return new DerSequence(m_publicKeyParamSet, m_digestParamSet); } } }