org.bouncycastle.asn1.ess.OtherCertID.java Source code

Introduction

Here is the source code for org.bouncycastle.asn1.ess.OtherCertID.java

Source

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;
    }

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

        v.add(otherCertHash);

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

        return new DERSequence(v);
    }
}