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The Bouncy Castle Java CMS and S/MIME APIs for handling the CMS and S/MIME protocols. This jar contains CMS and S/MIME APIs for JDK 1.6. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs. If the S/MIME API is used, the JavaMail API and the Java activation framework will also be needed.
package org.bouncycastle.sasn1.cms;
import org.bouncycastle.sasn1.Asn1Integer;
import org.bouncycastle.sasn1.Asn1Object;
import org.bouncycastle.sasn1.Asn1Sequence;
import org.bouncycastle.sasn1.Asn1Set;
import org.bouncycastle.sasn1.Asn1TaggedObject;
import org.bouncycastle.sasn1.BerTag;
import java.io.IOException;
/**
*
* EnvelopedData ::= SEQUENCE {
* version CMSVersion,
* originatorInfo [0] IMPLICIT OriginatorInfo OPTIONAL,
* recipientInfos RecipientInfos,
* encryptedContentInfo EncryptedContentInfo,
* unprotectedAttrs [1] IMPLICIT UnprotectedAttributes OPTIONAL
* }
*
* @deprecated use corresponding class in org.bouncycastle.asn1.cms
*/
public class EnvelopedDataParser
{
private Asn1Sequence _seq;
private Asn1Integer _version;
private Asn1Object _nextObject;
public EnvelopedDataParser(
Asn1Sequence seq)
throws IOException
{
this._seq = seq;
this._version = (Asn1Integer)seq.readObject();
}
public Asn1Integer getVersion()
{
return _version;
}
public Asn1Set getCertificates()
throws IOException
{
_nextObject = _seq.readObject();
if (_nextObject instanceof Asn1TaggedObject && ((Asn1TaggedObject)_nextObject).getTagNumber() == 0)
{
Asn1Set certs = (Asn1Set)((Asn1TaggedObject)_nextObject).getObject(BerTag.SET, false);
_nextObject = null;
return certs;
}
return null;
}
public Asn1Set getCrls()
throws IOException
{
if (_nextObject == null)
{
_nextObject = _seq.readObject();
}
if (_nextObject instanceof Asn1TaggedObject && ((Asn1TaggedObject)_nextObject).getTagNumber() == 1)
{
Asn1Set crls = (Asn1Set)((Asn1TaggedObject)_nextObject).getObject(BerTag.SET, false);
_nextObject = null;
return crls;
}
return null;
}
public Asn1Set getRecipientInfos()
throws IOException
{
return (Asn1Set)_seq.readObject();
}
public EncryptedContentInfoParser getEncryptedContentInfo()
throws IOException
{
return new EncryptedContentInfoParser((Asn1Sequence)_seq.readObject());
}
public Asn1Set getUnprotectedAttrs()
throws IOException
{
Asn1Object o = _seq.readObject();
if (o != null)
{
return (Asn1Set)((Asn1TaggedObject)o).getObject(BerTag.SET, false);
}
return null;
}
}