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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8. Note: this package includes the NTRU encryption algorithms.

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package org.bouncycastle.asn1.x509.qualified;

import java.util.Enumeration;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERIA5String;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;

/**
 * The BiometricData object.
 *  * BiometricData  ::=  SEQUENCE {
 *       typeOfBiometricData  TypeOfBiometricData,
 *       hashAlgorithm        AlgorithmIdentifier,
 *       biometricDataHash    OCTET STRING,
 *       sourceDataUri        IA5String OPTIONAL  }
 * 
 */
public class BiometricData 
    extends ASN1Object
{
    private TypeOfBiometricData typeOfBiometricData;
    private AlgorithmIdentifier hashAlgorithm;
    private ASN1OctetString     biometricDataHash;
    private DERIA5String        sourceDataUri;
    
    public static BiometricData getInstance(
        Object obj)
    {
        if (obj instanceof BiometricData)
        {
            return (BiometricData)obj;
        }

        if (obj != null)
        {
            return new BiometricData(ASN1Sequence.getInstance(obj));            
        }

        return null;
    }                
            
    private BiometricData(ASN1Sequence seq)
    {
        Enumeration e = seq.getObjects();

        // typeOfBiometricData
        typeOfBiometricData = TypeOfBiometricData.getInstance(e.nextElement());
        // hashAlgorithm
        hashAlgorithm = AlgorithmIdentifier.getInstance(e.nextElement());
        // biometricDataHash
        biometricDataHash = ASN1OctetString.getInstance(e.nextElement());
        // sourceDataUri
        if (e.hasMoreElements())
        {
            sourceDataUri = DERIA5String.getInstance(e.nextElement());
        }
    }
    
    public BiometricData(
        TypeOfBiometricData typeOfBiometricData,
        AlgorithmIdentifier hashAlgorithm,
        ASN1OctetString     biometricDataHash,
        DERIA5String        sourceDataUri)
    {
        this.typeOfBiometricData = typeOfBiometricData;
        this.hashAlgorithm = hashAlgorithm;
        this.biometricDataHash = biometricDataHash;
        this.sourceDataUri = sourceDataUri;
    }
    
    public BiometricData(
        TypeOfBiometricData typeOfBiometricData,
        AlgorithmIdentifier hashAlgorithm,
        ASN1OctetString     biometricDataHash)
    {
        this.typeOfBiometricData = typeOfBiometricData;
        this.hashAlgorithm = hashAlgorithm;
        this.biometricDataHash = biometricDataHash;
        this.sourceDataUri = null;
    }

    public TypeOfBiometricData getTypeOfBiometricData()
    {
        return typeOfBiometricData;
    }
    
    public AlgorithmIdentifier getHashAlgorithm()
    {
        return hashAlgorithm;
    }
    
    public ASN1OctetString getBiometricDataHash()
    {
        return biometricDataHash;
    }
    
    public DERIA5String getSourceDataUri()
    {
        return sourceDataUri;
    }
    
    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector seq = new ASN1EncodableVector();
        seq.add(typeOfBiometricData);
        seq.add(hashAlgorithm);
        seq.add(biometricDataHash); 
        
        if (sourceDataUri != null)
        {
            seq.add(sourceDataUri);
        }

        return new DERSequence(seq);
    }
}