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package io.gatling.recorder.internal.bouncycastle.oer.its.ieee1609dot2.basetypes;

import io.gatling.recorder.internal.bouncycastle.asn1.ASN1Object;
import io.gatling.recorder.internal.bouncycastle.asn1.ASN1Primitive;
import io.gatling.recorder.internal.bouncycastle.asn1.ASN1Sequence;
import io.gatling.recorder.internal.bouncycastle.oer.its.ItsUtils;

/**
 * PublicEncryptionKey ::= SEQUENCE {
 * supportedSymmAlg  SymmAlgorithm,
 * publicKey         BasePublicEncryptionKey
 * }
 */
public class PublicEncryptionKey
    extends ASN1Object
{
    private final SymmAlgorithm supportedSymmAlg;
    private final BasePublicEncryptionKey publicKey;

    public PublicEncryptionKey(SymmAlgorithm supportedSymmAlg, BasePublicEncryptionKey basePublicEncryptionKey)
    {
        this.supportedSymmAlg = supportedSymmAlg;
        this.publicKey = basePublicEncryptionKey;
    }

    private PublicEncryptionKey(ASN1Sequence seq)
    {
        if (seq.size() != 2)
        {
            throw new IllegalArgumentException("expected sequence size of 2");
        }

        this.supportedSymmAlg = SymmAlgorithm.getInstance(seq.getObjectAt(0));
        this.publicKey = BasePublicEncryptionKey.getInstance(seq.getObjectAt(1));

    }

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

        return null;

    }

    public SymmAlgorithm getSupportedSymmAlg()
    {
        return supportedSymmAlg;
    }

    public BasePublicEncryptionKey getPublicKey()
    {
        return publicKey;
    }

    public ASN1Primitive toASN1Primitive()
    {
        return ItsUtils.toSequence(supportedSymmAlg, publicKey);
    }

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

    public static class Builder
    {
        private SymmAlgorithm supportedSymmAlg;
        private BasePublicEncryptionKey publicKey;

        public Builder setSupportedSymmAlg(SymmAlgorithm supportedSymmAlg)
        {
            this.supportedSymmAlg = supportedSymmAlg;
            return this;
        }

        public Builder setPublicKey(BasePublicEncryptionKey basePublicEncryptionKey)
        {
            this.publicKey = basePublicEncryptionKey;
            return this;
        }

        public PublicEncryptionKey createPublicEncryptionKey()
        {
            return new PublicEncryptionKey(supportedSymmAlg, publicKey);
        }
    }

}