x9privatekeyinfo.java

进行与数字证书相关开发必须的java源码

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi 
// Source File Name:   X9PrivateKeyInfo.java

package jit.asn1.x9;

import jit.asn1.*;
import jit.crypto.params.ECDomainParameters;
import jit.crypto.params.ECPrivateKeyParameters;
import jit.math.BigInteger;

// Referenced classes of package jit.asn1.x9:
//            X9ECParameters

public class X9PrivateKeyInfo
    implements DEREncodable
{

    private DERInteger version;
    private DEROctetString privateKey;
    private X9ECParameters domainParams;

    public X9PrivateKeyInfo()
    {
        version = new DERInteger(1);
        privateKey = null;
        domainParams = null;
    }

    public X9PrivateKeyInfo(DERInteger version, DEROctetString privateKey, X9ECParameters domainParams)
    {
        this.version = new DERInteger(1);
        if(version != null)
            this.version = version;
        this.privateKey = privateKey;
        this.domainParams = domainParams;
    }

    public X9PrivateKeyInfo(DEROctetString privateKey, X9ECParameters domainParams)
    {
        version = new DERInteger(1);
        this.privateKey = privateKey;
        this.domainParams = domainParams;
    }

    public X9PrivateKeyInfo(DERInteger version, DEROctetString privateKey)
    {
        this.version = new DERInteger(1);
        if(version != null)
            this.version = version;
        this.privateKey = privateKey;
        domainParams = null;
    }

    public X9PrivateKeyInfo(ASN1Sequence seq)
    {
        version = new DERInteger(1);
        if(!((DERInteger)seq.getObjectAt(0)).equals(version))
        {
            throw new IllegalArgumentException("unknown object in creating object");
        } else
        {
            privateKey = (DEROctetString)seq.getObjectAt(1);
            DERTaggedObject tTaggedObject = (DERTaggedObject)seq.getObjectAt(2);
            DERSequence tDERSequence = new DERSequence(tTaggedObject.getObject());
            ASN1Sequence tASN1Sequence = (ASN1Sequence)tDERSequence.getObjectAt(0);
            domainParams = new X9ECParameters(tASN1Sequence);
            return;
        }
    }

    public ECDomainParameters getECDomainParameters()
    {
        return new ECDomainParameters(domainParams.getCurve(), domainParams.getG(), domainParams.getN(), domainParams.getH(), domainParams.getSeed());
    }

    public X9ECParameters getDomainParams()
    {
        return domainParams;
    }

    public ECPrivateKeyParameters getPrivateKey()
    {
        byte tByteKey[] = privateKey.getOctets();
        BigInteger d = new BigInteger(tByteKey);
        ECPrivateKeyParameters tECKey = new ECPrivateKeyParameters(d, getECDomainParameters());
        return tECKey;
    }

    public DERInteger getVersion()
    {
        return version;
    }

    public DERObject getDERObject()
    {
        ASN1EncodableVector v = new ASN1EncodableVector();
        DERTaggedObject asn1Tag = new DERTaggedObject(true, 0, domainParams);
        v.add(version);
        v.add(privateKey);
        v.add(asn1Tag);
        return new DERSequence(v);
    }
}