org.bouncycastle.asn1.x509.Certificate.java Source code

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Here is the source code for org.bouncycastle.asn1.x509.Certificate.java

Source

package org.bouncycastle.asn1.x509;

import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERBitString;
import org.bouncycastle.asn1.x500.X500Name;

/**
 * an X509Certificate structure.
 * <pre>
 *  Certificate ::= SEQUENCE {
 *      tbsCertificate          TBSCertificate,
 *      signatureAlgorithm      AlgorithmIdentifier,
 *      signature               BIT STRING
 *  }
 * </pre>
 */
public class Certificate extends ASN1Object {
    ASN1Sequence seq;
    TBSCertificate tbsCert;
    AlgorithmIdentifier sigAlgId;
    DERBitString sig;

    public static Certificate getInstance(ASN1TaggedObject obj, boolean explicit) {
        return getInstance(ASN1Sequence.getInstance(obj, explicit));
    }

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

        return null;
    }

    private Certificate(ASN1Sequence seq) {
        this.seq = seq;

        //
        // correct x509 certficate
        //
        if (seq.size() == 3) {
            tbsCert = TBSCertificate.getInstance(seq.getObjectAt(0));
            sigAlgId = AlgorithmIdentifier.getInstance(seq.getObjectAt(1));

            sig = DERBitString.getInstance(seq.getObjectAt(2));
        } else {
            throw new IllegalArgumentException("sequence wrong size for a certificate");
        }
    }

    public TBSCertificate getTBSCertificate() {
        return tbsCert;
    }

    public ASN1Integer getVersion() {
        return tbsCert.getVersion();
    }

    public int getVersionNumber() {
        return tbsCert.getVersionNumber();
    }

    public ASN1Integer getSerialNumber() {
        return tbsCert.getSerialNumber();
    }

    public X500Name getIssuer() {
        return tbsCert.getIssuer();
    }

    public Time getStartDate() {
        return tbsCert.getStartDate();
    }

    public Time getEndDate() {
        return tbsCert.getEndDate();
    }

    public X500Name getSubject() {
        return tbsCert.getSubject();
    }

    public SubjectPublicKeyInfo getSubjectPublicKeyInfo() {
        return tbsCert.getSubjectPublicKeyInfo();
    }

    public AlgorithmIdentifier getSignatureAlgorithm() {
        return sigAlgId;
    }

    public DERBitString getSignature() {
        return sig;
    }

    public ASN1Primitive toASN1Primitive() {
        return seq;
    }
}