diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/pkcs/SignedData.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/pkcs/SignedData.java | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/pkcs/SignedData.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/pkcs/SignedData.java new file mode 100644 index 000000000..c99fe6929 --- /dev/null +++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/pkcs/SignedData.java @@ -0,0 +1,167 @@ +package org.spongycastle.asn1.pkcs; + +import java.util.Enumeration; + +import org.spongycastle.asn1.ASN1EncodableVector; +import org.spongycastle.asn1.ASN1Integer; +import org.spongycastle.asn1.ASN1Object; +import org.spongycastle.asn1.ASN1Primitive; +import org.spongycastle.asn1.ASN1Sequence; +import org.spongycastle.asn1.ASN1Set; +import org.spongycastle.asn1.ASN1TaggedObject; +import org.spongycastle.asn1.BERSequence; +import org.spongycastle.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); + } +} |