package org.bouncycastle.asn1.ua; import org.bouncycastle.asn1.ASN1EncodableVector; import org.bouncycastle.asn1.ASN1Object; import org.bouncycastle.asn1.ASN1ObjectIdentifier; import org.bouncycastle.asn1.ASN1OctetString; import org.bouncycastle.asn1.ASN1Primitive; import org.bouncycastle.asn1.ASN1Sequence; import org.bouncycastle.asn1.DEROctetString; import org.bouncycastle.asn1.DERSequence; public class DSTU4145Params extends ASN1Object { private static final byte DEFAULT_DKE[] = { (byte)0xa9, (byte)0xd6, (byte)0xeb, 0x45, (byte)0xf1, 0x3c, 0x70, (byte)0x82, (byte)0x80, (byte)0xc4, (byte)0x96, 0x7b, 0x23, 0x1f, 0x5e, (byte)0xad, (byte)0xf6, 0x58, (byte)0xeb, (byte)0xa4, (byte)0xc0, 0x37, 0x29, 0x1d, 0x38, (byte)0xd9, 0x6b, (byte)0xf0, 0x25, (byte)0xca, 0x4e, 0x17, (byte)0xf8, (byte)0xe9, 0x72, 0x0d, (byte)0xc6, 0x15, (byte)0xb4, 0x3a, 0x28, (byte)0x97, 0x5f, 0x0b, (byte)0xc1, (byte)0xde, (byte)0xa3, 0x64, 0x38, (byte)0xb5, 0x64, (byte)0xea, 0x2c, 0x17, (byte)0x9f, (byte)0xd0, 0x12, 0x3e, 0x6d, (byte)0xb8, (byte)0xfa, (byte)0xc5, 0x79, 0x04}; private ASN1ObjectIdentifier namedCurve; private DSTU4145ECBinary ecbinary; private byte[] dke = DEFAULT_DKE; public DSTU4145Params(ASN1ObjectIdentifier namedCurve) { this.namedCurve = namedCurve; } public DSTU4145Params(DSTU4145ECBinary ecbinary) { this.ecbinary = ecbinary; } public boolean isNamedCurve() { return namedCurve != null; } public DSTU4145ECBinary getECBinary() { return ecbinary; } public byte[] getDKE() { return dke; } public static byte[] getDefaultDKE() { return DEFAULT_DKE; } public ASN1ObjectIdentifier getNamedCurve() { return namedCurve; } public static DSTU4145Params getInstance(Object obj) { if (obj instanceof DSTU4145Params) { return (DSTU4145Params)obj; } if (obj != null) { ASN1Sequence seq = ASN1Sequence.getInstance(obj); DSTU4145Params params; if (seq.getObjectAt(0) instanceof ASN1ObjectIdentifier) { params = new DSTU4145Params(ASN1ObjectIdentifier.getInstance(seq.getObjectAt(0))); } else { params = new DSTU4145Params(DSTU4145ECBinary.getInstance(seq.getObjectAt(0))); } if (seq.size() == 2) { params.dke = ASN1OctetString.getInstance(seq.getObjectAt(1)).getOctets(); if (params.dke.length != DSTU4145Params.DEFAULT_DKE.length) { throw new IllegalArgumentException("object parse error"); } } return params; } throw new IllegalArgumentException("object parse error"); } public ASN1Primitive toASN1Primitive() { ASN1EncodableVector v = new ASN1EncodableVector(); if (namedCurve != null) { v.add(namedCurve); } else { v.add(ecbinary); } if (!org.bouncycastle.util.Arrays.areEqual(dke, DEFAULT_DKE)) { v.add(new DEROctetString(dke)); } return new DERSequence(v); } }