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package org.bouncycastle.cms;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.cms.IssuerAndSerialNumber;
import org.bouncycastle.asn1.cms.KeyTransRecipientInfo;
import org.bouncycastle.asn1.cms.RecipientIdentifier;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
/**
* the KeyTransRecipientInformation class for a recipient who has been sent a secret
* key encrypted using their public key that needs to be used to
* extract the message.
*/
public class KeyTransRecipientInformation
extends RecipientInformation
{
private KeyTransRecipientInfo info;
KeyTransRecipientInformation(
KeyTransRecipientInfo info,
AlgorithmIdentifier messageAlgorithm,
CMSSecureReadable secureReadable,
AuthAttributesProvider additionalData)
{
super(info.getKeyEncryptionAlgorithm(), messageAlgorithm, secureReadable, additionalData);
this.info = info;
RecipientIdentifier r = info.getRecipientIdentifier();
if (r.isTagged())
{
ASN1OctetString octs = ASN1OctetString.getInstance(r.getId());
rid = new KeyTransRecipientId(octs.getOctets());
}
else
{
IssuerAndSerialNumber iAnds = IssuerAndSerialNumber.getInstance(r.getId());
rid = new KeyTransRecipientId(iAnds.getName(), iAnds.getSerialNumber().getValue());
}
}
protected RecipientOperator getRecipientOperator(Recipient recipient)
throws CMSException
{
return ((KeyTransRecipient)recipient).getRecipientOperator(keyEncAlg, messageAlgorithm, info.getEncryptedKey().getOctets());
}
}
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