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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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package org.bouncycastle.oer.its.etsi102941;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.oer.its.etsi102941.basetypes.CertificateFormat;
import org.bouncycastle.oer.its.etsi102941.basetypes.CertificateSubjectAttributes;
import org.bouncycastle.oer.its.ieee1609dot2.basetypes.HashedId8;

/**
 * SharedAtRequest ::= SEQUENCE {
 * eaId                          HashedId8,
 * keyTag                        OCTET STRING (SIZE(16)),
 * certificateFormat             CertificateFormat,
 * requestedSubjectAttributes    CertificateSubjectAttributes (WITH COMPONENTS{..., certIssuePermissions ABSENT}),
 * ...
 * }
 */
public class SharedAtRequest
    extends ASN1Object
{

    private final HashedId8 eaId;
    private final ASN1OctetString keyTag;
    private final CertificateFormat certificateFormat;
    private final CertificateSubjectAttributes requestedSubjectAttributes;

    public SharedAtRequest(
        HashedId8 eaId,
        ASN1OctetString keyTag,
        CertificateFormat certificateFormat,
        CertificateSubjectAttributes requestedSubjectAttributes)
    {
        this.eaId = eaId;
        this.keyTag = keyTag;
        this.certificateFormat = certificateFormat;
        this.requestedSubjectAttributes = requestedSubjectAttributes;
    }

    private SharedAtRequest(ASN1Sequence seq)
    {
        if (seq.size() != 4)
        {
            throw new IllegalArgumentException("expected sequence size of 4");
        }

        eaId = HashedId8.getInstance(seq.getObjectAt(0));
        keyTag = ASN1OctetString.getInstance(seq.getObjectAt(1));
        certificateFormat = CertificateFormat.getInstance(seq.getObjectAt(2));
        requestedSubjectAttributes = CertificateSubjectAttributes.getInstance(seq.getObjectAt(3));
    }

    public static SharedAtRequest getInstance(Object o)
    {
        if (o instanceof SharedAtRequest)
        {
            return (SharedAtRequest)o;
        }

        if (o != null)
        {
            return new SharedAtRequest(ASN1Sequence.getInstance(o));
        }

        return null;
    }

    public HashedId8 getEaId()
    {
        return eaId;
    }

    public ASN1OctetString getKeyTag()
    {
        return keyTag;
    }

    public CertificateFormat getCertificateFormat()
    {
        return certificateFormat;
    }

    public CertificateSubjectAttributes getRequestedSubjectAttributes()
    {
        return requestedSubjectAttributes;
    }

    public ASN1Primitive toASN1Primitive()
    {
        return new DERSequence(new ASN1Encodable[]{eaId, keyTag, certificateFormat, requestedSubjectAttributes});
    }

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

    public static class Builder
    {
        private HashedId8 eaId;
        private ASN1OctetString keyTag;
        private CertificateFormat certificateFormat;
        private CertificateSubjectAttributes requestedSubjectAttributes;

        public Builder setEaId(HashedId8 eaId)
        {
            this.eaId = eaId;
            return this;
        }

        public Builder setKeyTag(ASN1OctetString keyTag)
        {
            this.keyTag = keyTag;
            return this;
        }

        public Builder setKeyTag(byte[] keyTag)
        {
            this.keyTag = new DEROctetString(keyTag);
            return this;
        }

        public Builder setCertificateFormat(CertificateFormat certificateFormat)
        {
            this.certificateFormat = certificateFormat;
            return this;
        }

        public Builder setRequestedSubjectAttributes(CertificateSubjectAttributes requestedSubjectAttributes)
        {
            this.requestedSubjectAttributes = requestedSubjectAttributes;
            return this;
        }


        public SharedAtRequest createSharedAtRequest()
        {
            return new SharedAtRequest(eaId, keyTag, certificateFormat, requestedSubjectAttributes);
        }
    }

}