org.bouncycastle.asn1.ess.OtherCertID Maven / Gradle / Ivy

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The Bouncy Castle Java APIs for ASN.1 extension and utility APIs used to support bcpkix and bctls with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified and used appropriately.

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package org.bouncycastle.asn1.ess;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.oiw.OIWObjectIdentifiers;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.DigestInfo;
import org.bouncycastle.asn1.x509.IssuerSerial;

public class OtherCertID
    extends ASN1Object
{
    private ASN1Encodable otherCertHash;
    private IssuerSerial issuerSerial;

    public static OtherCertID getInstance(Object o)
    {
        if (o instanceof OtherCertID)
        {
            return (OtherCertID) o;
        }
        else if (o != null)
        {
            return new OtherCertID(ASN1Sequence.getInstance(o));
        }

        return null;
    }

    /**
     * constructor
     */
    private OtherCertID(ASN1Sequence seq)
    {
        if (seq.size() < 1 || seq.size() > 2)
        {
            throw new IllegalArgumentException("Bad sequence size: "
                    + seq.size());
        }

        if (seq.getObjectAt(0).toASN1Primitive() instanceof ASN1OctetString)
        {
            otherCertHash = ASN1OctetString.getInstance(seq.getObjectAt(0));
        }
        else
        {
            otherCertHash = DigestInfo.getInstance(seq.getObjectAt(0));

        }

        if (seq.size() > 1)
        {
            issuerSerial = IssuerSerial.getInstance(seq.getObjectAt(1));
        }
    }

    public OtherCertID(
        AlgorithmIdentifier  algId,
        byte[]               digest)
    {
        this.otherCertHash = new DigestInfo(algId, digest);
    }

    public OtherCertID(
        AlgorithmIdentifier  algId,
        byte[]               digest,
        IssuerSerial    issuerSerial)
    {
        this.otherCertHash = new DigestInfo(algId, digest);
        this.issuerSerial = issuerSerial;
    }

    public AlgorithmIdentifier getAlgorithmHash()
    {
        if (otherCertHash.toASN1Primitive() instanceof ASN1OctetString)
        {
            // SHA-1
            return new AlgorithmIdentifier(OIWObjectIdentifiers.idSHA1);
        }
        else
        {
            return DigestInfo.getInstance(otherCertHash).getAlgorithmId();
        }
    }

    public byte[] getCertHash()
    {
        if (otherCertHash.toASN1Primitive() instanceof ASN1OctetString)
        {
            // SHA-1
            return ((ASN1OctetString)otherCertHash.toASN1Primitive()).getOctets();
        }
        else
        {
            return DigestInfo.getInstance(otherCertHash).getDigest();
        }
    }

    public IssuerSerial getIssuerSerial()
    {
        return issuerSerial;
    }

    /**
     *      * OtherCertID ::= SEQUENCE {
     *     otherCertHash    OtherHash,
     *     issuerSerial     IssuerSerial OPTIONAL }
     *
     * OtherHash ::= CHOICE {
     *     sha1Hash     OCTET STRING,
     *     otherHash    OtherHashAlgAndValue }
     *
     * OtherHashAlgAndValue ::= SEQUENCE {
     *     hashAlgorithm    AlgorithmIdentifier,
     *     hashValue        OCTET STRING }
     *
     * 
     */
    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector v = new ASN1EncodableVector(2);

        v.add(otherCertHash);

        if (issuerSerial != null)
        {
            v.add(issuerSerial);
        }

        return new DERSequence(v);
    }
}