org.bouncycastle.oer.its.Signature Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of bcutil-jdk15on Show documentation
The Bouncy Castle Java APIs for ASN.1 extension and utility APIs used to support bcpkix and bctls. This jar contains APIs for JDK 1.5 and up.
The newest version!
package org.bouncycastle.oer.its;

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

/**
 *  *     Signature ::= CHOICE {
 *         ecdsaNistP256Signature EcdsaP256Signature,
 *         ecdsaBrainpoolP256r1Signature EcdsaP256Signature,
 *         ...
 *         ecdsaBrainpoolP384r1Signature EcdsaP384Signature
 *     }
 * 
 */
public class Signature
    extends ASN1Object
    implements ASN1Choice
{
    public static final int ecdsaNistP256Signature = 0;
    public static final int ecdsaBrainpoolP256r1Signature = 1;
    public static final int ecdsaBrainpoolP384r1Signature = 3;
    private static final int extension = 2;
    private final int choice;
    private final ASN1Encodable value;

    public Signature(int choice, ASN1Encodable value)
    {
        this.choice = choice;
        this.value = value;
    }

    public static Signature getInstance(Object objectAt)
    {
        if (objectAt instanceof Signature)
        {
            return (Signature)objectAt;
        }

        ASN1TaggedObject ato = ASN1TaggedObject.getInstance(objectAt);
        ASN1Encodable value;

        switch (ato.getTagNo())
        {
        case ecdsaNistP256Signature:
        case ecdsaBrainpoolP256r1Signature:
            value = EcdsaP256Signature.getInstance(ato.getObject());
            break;
        case extension:
            value = DEROctetString.getInstance(ato.getObject());
            break;
        case ecdsaBrainpoolP384r1Signature:
            value = EcdsaP384Signature.getInstance(ato.getObject());
            break;
        default:
            throw new IllegalStateException("unknown choice " + ato.getTagNo());
        }
        return new Signature(ato.getTagNo(), value);

    }

    public static Builder builder()
    {
        return new Builder();
    }

    public int getChoice()
    {
        return choice;
    }

    public ASN1Encodable getValue()
    {
        return value;
    }

    public ASN1Primitive toASN1Primitive()
    {
        return new DERTaggedObject(choice, value);
    }

    public static class Builder
    {
        private int choice;
        private ASN1Encodable value;
/*
    ecdsaNistP256Signature EcdsaP256Signature,
 *         ecdsaBrainpoolP256r1Signature EcdsaP256Signature,
 *         ...
 *         ecdsaBrainpoolP384r1Signature EcdsaP384Signature
 */

        public Builder ecdsaNistP256Signature(EcdsaP256Signature signature)
        {
            choice = ecdsaNistP256Signature;
            value = signature;
            return this;
        }

        public Builder ecdsaBrainpoolP256r1Signature(EcdsaP256Signature signature)
        {
            choice = ecdsaBrainpoolP256r1Signature;
            value = signature;
            return this;
        }

        public Builder ecdsaBrainpoolP384r1Signature(EcdsaP384Signature signature)
        {
            choice = ecdsaBrainpoolP384r1Signature;
            value = signature;
            return this;
        }

        public Signature createSignature()
        {
            return new Signature(choice, value);
        }
    }

}