org.bouncycastle.asn1.cms.SignerIdentifier 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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/******    DO NOT EDIT THIS CLASS bc-java SOURCE FILE     ******/
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package org.bouncycastle.asn1.cms;

import org.bouncycastle.asn1.ASN1Choice;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERTaggedObject;

/**
 * RFC 5652:
 * Identify who signed the containing {@link SignerInfo} object.
 * 
 * The certificates referred to by this are at containing {@link SignedData} structure.
 * 

 * 
 * SignerIdentifier ::= CHOICE {
 *     issuerAndSerialNumber IssuerAndSerialNumber,
 *     subjectKeyIdentifier [0] SubjectKeyIdentifier 
 * }
 *
 * SubjectKeyIdentifier ::= OCTET STRING
 * 
 */
public class SignerIdentifier
    extends ASN1Object
    implements ASN1Choice
{
    private ASN1Encodable id;
    
    public SignerIdentifier(
        IssuerAndSerialNumber id)
    {
        this.id = id;
    }
    
    public SignerIdentifier(
        ASN1OctetString id)
    {
        this.id = new DERTaggedObject(false, 0, id);
    }
    
    public SignerIdentifier(
        ASN1Primitive id)
    {
        this.id = id;
    }
    
    /**
     * Return a SignerIdentifier object from the given object.
     * 
     * Accepted inputs:
     * 

     *  null → null
     * 
 {@link SignerIdentifier} object
     * 
 {@link IssuerAndSerialNumber} object
     * 
 {@link org.bouncycastle.asn1.ASN1OctetString#getInstance(java.lang.Object) ASN1OctetString} input formats with SignerIdentifier structure inside
     * 
 {@link org.bouncycastle.asn1.ASN1Primitive ASN1Primitive} for SignerIdentifier constructor.
     * 
     *
     * @param o the object we want converted.
     * @exception IllegalArgumentException if the object cannot be converted.
     */
    public static SignerIdentifier getInstance(
        Object o)
    {
        if (o == null || o instanceof SignerIdentifier)
        {
            return (SignerIdentifier)o;
        }
        
        if (o instanceof IssuerAndSerialNumber)
        {
            return new SignerIdentifier((IssuerAndSerialNumber)o);
        }
        
        if (o instanceof ASN1OctetString)
        {
            return new SignerIdentifier((ASN1OctetString)o);
        }
        
        if (o instanceof ASN1Primitive)
        {
            return new SignerIdentifier((ASN1Primitive)o);
        }
        
        throw new IllegalArgumentException(
             "Illegal object in SignerIdentifier: " + o.getClass().getName());
    } 

    public boolean isTagged()
    {
        return (id instanceof ASN1TaggedObject);
    }

    public ASN1Encodable getId()
    {
        if (id instanceof ASN1TaggedObject)
        {
            return ASN1OctetString.getInstance((ASN1TaggedObject)id, false);
        }

        return id;
    }

    /** 
     * Produce an object suitable for an ASN1OutputStream.
     */
    public ASN1Primitive toASN1Primitive()
    {
        return id.toASN1Primitive();
    }
}