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package org.bouncycastle.asn1.pkcs;
import java.util.Enumeration;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1Set;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.BERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
/**
* a PKCS#7 signed data object.
*/
public class SignedData
extends ASN1Object
implements PKCSObjectIdentifiers
{
private ASN1Integer version;
private ASN1Set digestAlgorithms;
private ContentInfo contentInfo;
private ASN1Set certificates;
private ASN1Set crls;
private ASN1Set signerInfos;
public static SignedData getInstance(
Object o)
{
if (o instanceof SignedData)
{
return (SignedData)o;
}
else if (o != null)
{
return new SignedData(ASN1Sequence.getInstance(o));
}
return null;
}
public SignedData(
ASN1Integer _version,
ASN1Set _digestAlgorithms,
ContentInfo _contentInfo,
ASN1Set _certificates,
ASN1Set _crls,
ASN1Set _signerInfos)
{
version = _version;
digestAlgorithms = _digestAlgorithms;
contentInfo = _contentInfo;
certificates = _certificates;
crls = _crls;
signerInfos = _signerInfos;
}
public SignedData(
ASN1Sequence seq)
{
Enumeration e = seq.getObjects();
version = (ASN1Integer)e.nextElement();
digestAlgorithms = ((ASN1Set)e.nextElement());
contentInfo = ContentInfo.getInstance(e.nextElement());
while (e.hasMoreElements())
{
ASN1Primitive o = (ASN1Primitive)e.nextElement();
//
// an interesting feature of SignedData is that there appear to be varying implementations...
// for the moment we ignore anything which doesn't fit.
//
if (o instanceof ASN1TaggedObject)
{
ASN1TaggedObject tagged = (ASN1TaggedObject)o;
switch (tagged.getTagNo())
{
case 0:
certificates = ASN1Set.getInstance(tagged, false);
break;
case 1:
crls = ASN1Set.getInstance(tagged, false);
break;
default:
throw new IllegalArgumentException("unknown tag value " + tagged.getTagNo());
}
}
else
{
signerInfos = (ASN1Set)o;
}
}
}
public ASN1Integer getVersion()
{
return version;
}
public ASN1Set getDigestAlgorithms()
{
return digestAlgorithms;
}
public ContentInfo getContentInfo()
{
return contentInfo;
}
public ASN1Set getCertificates()
{
return certificates;
}
public ASN1Set getCRLs()
{
return crls;
}
public ASN1Set getSignerInfos()
{
return signerInfos;
}
/**
* Produce an object suitable for an ASN1OutputStream.
* <pre>
* SignedData ::= SEQUENCE {
* version Version,
* digestAlgorithms DigestAlgorithmIdentifiers,
* contentInfo ContentInfo,
* certificates
* [0] IMPLICIT ExtendedCertificatesAndCertificates
* OPTIONAL,
* crls
* [1] IMPLICIT CertificateRevocationLists OPTIONAL,
* signerInfos SignerInfos }
* </pre>
*/
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(version);
v.add(digestAlgorithms);
v.add(contentInfo);
if (certificates != null)
{
v.add(new DERTaggedObject(false, 0, certificates));
}
if (crls != null)
{
v.add(new DERTaggedObject(false, 1, crls));
}
v.add(signerInfos);
return new BERSequence(v);
}
}
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