package org.bouncycastle.asn1.pkcs;

import java.util.Enumeration;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1Set;
import org.bouncycastle.asn1.BERSequence;
import org.bouncycastle.asn1.DERInteger;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERTaggedObject;

a PKCS#7 signed data object.
/** * a PKCS#7 signed data object. */
public class SignedData extends ASN1Encodable implements PKCSObjectIdentifiers { private DERInteger 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 instanceof ASN1Sequence) { return new SignedData((ASN1Sequence)o); } throw new IllegalArgumentException("unknown object in factory: " + o); } public SignedData( DERInteger _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 = (DERInteger)e.nextElement(); digestAlgorithms = ((ASN1Set)e.nextElement()); contentInfo = ContentInfo.getInstance(e.nextElement()); while (e.hasMoreElements()) { DERObject o = (DERObject)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 DERTaggedObject) { DERTaggedObject tagged = (DERTaggedObject)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 DERInteger 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.
 SignedData ::= SEQUENCE {
     version Version,
     digestAlgorithms DigestAlgorithmIdentifiers,
     contentInfo ContentInfo,
     certificates
         [0] IMPLICIT ExtendedCertificatesAndCertificates
                  OPTIONAL,
     crls
         [1] IMPLICIT CertificateRevocationLists OPTIONAL,
     signerInfos 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 DERObject toASN1Object() { 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); } }