org.bouncycastle.oer.its.ieee1609dot2.HashedData 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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package org.bouncycastle.oer.its.ieee1609dot2;

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.BERTags;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERTaggedObject;
import org.bouncycastle.util.Arrays;

/**
 *  *    HashedData::= CHOICE {
 *     sha256HashedData  OCTET STRING (SIZE(32)),
 *     ...,
 *     sha384HashedData  OCTET STRING (SIZE(48)),
 *     reserved          OCTET STRING (SIZE(32))
 *   }
 * 
 */
public class HashedData
    extends ASN1Object
    implements ASN1Choice
{
    public static final int sha256HashedData = 0;
    public static final int sha384HashedData = 1;
    public static final int reserved = 2;


    private final int choice;
    private final ASN1Encodable hashedData;

    public HashedData(int choice, ASN1Encodable sha256HashedData)
    {
        this.choice = choice;
        this.hashedData = sha256HashedData;
    }

    private HashedData(ASN1TaggedObject dto)
    {
        switch (dto.getTagNo())
        {
        case sha256HashedData:
        case sha384HashedData:
        case reserved:
            this.choice = dto.getTagNo();
            this.hashedData = DEROctetString.getInstance(dto.getObject());
            break;
        default:
            throw new IllegalArgumentException("invalid choice value " + dto.getTagNo());
        }
    }

    public static HashedData sha256HashedData(ASN1OctetString sha256HashedData)
    {
        return new HashedData(HashedData.sha256HashedData,sha256HashedData);
    }

    public static HashedData sha256HashedData(byte[] sha256HashedData)
    {
        return new HashedData(HashedData.sha256HashedData,new DEROctetString(Arrays.clone(sha256HashedData)));
    }

    public static HashedData sha384HashedData(ASN1OctetString sha384HashedData)
    {
        return new HashedData(HashedData.sha384HashedData,sha384HashedData);
    }

    public static HashedData sha384HashedData(byte[] sha384HashedData)
    {
        return new HashedData(HashedData.sha384HashedData,new DEROctetString(Arrays.clone(sha384HashedData)));
    }

    public static HashedData reserved(ASN1OctetString reserved)
    {
       return new HashedData(HashedData.reserved,reserved);
    }

    public static HashedData reserved(byte[] reserved)
    {
        return new HashedData(HashedData.reserved, new DEROctetString(Arrays.clone(reserved)));
    }

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

        if (o != null)
        {
            return new HashedData(ASN1TaggedObject.getInstance(o));
        }

        return null;

    }

    public int getChoice()
    {
        return choice;
    }

    public ASN1Encodable getHashedData()
    {
        return hashedData;
    }

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


}