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package org.spongycastle.asn1.pkcs;
import org.spongycastle.asn1.ASN1Encodable;
import org.spongycastle.asn1.ASN1EncodableVector;
import org.spongycastle.asn1.ASN1Integer;
import org.spongycastle.asn1.ASN1Object;
import org.spongycastle.asn1.ASN1ObjectIdentifier;
import org.spongycastle.asn1.ASN1OctetString;
import org.spongycastle.asn1.ASN1Primitive;
import org.spongycastle.asn1.ASN1Sequence;
import org.spongycastle.asn1.ASN1TaggedObject;
import org.spongycastle.asn1.BERSequence;
import org.spongycastle.asn1.BERTaggedObject;
import org.spongycastle.asn1.x509.AlgorithmIdentifier;
/**
* The EncryptedData object.
* <pre>
* EncryptedData ::= SEQUENCE {
* version Version,
* encryptedContentInfo EncryptedContentInfo
* }
*
*
* EncryptedContentInfo ::= SEQUENCE {
* contentType ContentType,
* contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier,
* encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL
* }
*
* EncryptedContent ::= OCTET STRING
* </pre>
*/
public class EncryptedData
extends ASN1Object
{
ASN1Sequence data;
ASN1ObjectIdentifier bagId;
ASN1Primitive bagValue;
public static EncryptedData getInstance(
Object obj)
{
if (obj instanceof EncryptedData)
{
return (EncryptedData)obj;
}
if (obj != null)
{
return new EncryptedData(ASN1Sequence.getInstance(obj));
}
return null;
}
private EncryptedData(
ASN1Sequence seq)
{
int version = ((ASN1Integer)seq.getObjectAt(0)).getValue().intValue();
if (version != 0)
{
throw new IllegalArgumentException("sequence not version 0");
}
this.data = ASN1Sequence.getInstance(seq.getObjectAt(1));
}
public EncryptedData(
ASN1ObjectIdentifier contentType,
AlgorithmIdentifier encryptionAlgorithm,
ASN1Encodable content)
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(contentType);
v.add(encryptionAlgorithm.toASN1Primitive());
v.add(new BERTaggedObject(false, 0, content));
data = new BERSequence(v);
}
public ASN1ObjectIdentifier getContentType()
{
return ASN1ObjectIdentifier.getInstance(data.getObjectAt(0));
}
public AlgorithmIdentifier getEncryptionAlgorithm()
{
return AlgorithmIdentifier.getInstance(data.getObjectAt(1));
}
public ASN1OctetString getContent()
{
if (data.size() == 3)
{
ASN1TaggedObject o = ASN1TaggedObject.getInstance(data.getObjectAt(2));
return ASN1OctetString.getInstance(o, false);
}
return null;
}
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(new ASN1Integer(0));
v.add(data);
return new BERSequence(v);
}
}
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