diff options
Diffstat (limited to 'core/src/main/java/org/bouncycastle/asn1/cms/SignerInfo.java')
| -rw-r--r-- | core/src/main/java/org/bouncycastle/asn1/cms/SignerInfo.java | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/asn1/cms/SignerInfo.java b/core/src/main/java/org/bouncycastle/asn1/cms/SignerInfo.java new file mode 100644 index 00000000..8aafd677 --- /dev/null +++ b/core/src/main/java/org/bouncycastle/asn1/cms/SignerInfo.java @@ -0,0 +1,211 @@ +package org.bouncycastle.asn1.cms; + +import java.util.Enumeration; + +import org.bouncycastle.asn1.ASN1EncodableVector; +import org.bouncycastle.asn1.ASN1Integer; +import org.bouncycastle.asn1.ASN1Object; +import org.bouncycastle.asn1.ASN1OctetString; +import org.bouncycastle.asn1.ASN1Primitive; +import org.bouncycastle.asn1.ASN1Sequence; +import org.bouncycastle.asn1.ASN1Set; +import org.bouncycastle.asn1.ASN1TaggedObject; +import org.bouncycastle.asn1.DEROctetString; +import org.bouncycastle.asn1.DERSequence; +import org.bouncycastle.asn1.DERTaggedObject; +import org.bouncycastle.asn1.x509.AlgorithmIdentifier; + +public class SignerInfo + extends ASN1Object +{ + private ASN1Integer version; + private SignerIdentifier sid; + private AlgorithmIdentifier digAlgorithm; + private ASN1Set authenticatedAttributes; + private AlgorithmIdentifier digEncryptionAlgorithm; + private ASN1OctetString encryptedDigest; + private ASN1Set unauthenticatedAttributes; + + public static SignerInfo getInstance( + Object o) + throws IllegalArgumentException + { + if (o == null || o instanceof SignerInfo) + { + return (SignerInfo)o; + } + else if (o instanceof ASN1Sequence) + { + return new SignerInfo((ASN1Sequence)o); + } + + throw new IllegalArgumentException("unknown object in factory: " + o.getClass().getName()); + } + + public SignerInfo( + SignerIdentifier sid, + AlgorithmIdentifier digAlgorithm, + ASN1Set authenticatedAttributes, + AlgorithmIdentifier digEncryptionAlgorithm, + ASN1OctetString encryptedDigest, + ASN1Set unauthenticatedAttributes) + { + if (sid.isTagged()) + { + this.version = new ASN1Integer(3); + } + else + { + this.version = new ASN1Integer(1); + } + + this.sid = sid; + this.digAlgorithm = digAlgorithm; + this.authenticatedAttributes = authenticatedAttributes; + this.digEncryptionAlgorithm = digEncryptionAlgorithm; + this.encryptedDigest = encryptedDigest; + this.unauthenticatedAttributes = unauthenticatedAttributes; + } + + public SignerInfo( + SignerIdentifier sid, + AlgorithmIdentifier digAlgorithm, + Attributes authenticatedAttributes, + AlgorithmIdentifier digEncryptionAlgorithm, + ASN1OctetString encryptedDigest, + Attributes unauthenticatedAttributes) + { + if (sid.isTagged()) + { + this.version = new ASN1Integer(3); + } + else + { + this.version = new ASN1Integer(1); + } + + this.sid = sid; + this.digAlgorithm = digAlgorithm; + this.authenticatedAttributes = ASN1Set.getInstance(authenticatedAttributes); + this.digEncryptionAlgorithm = digEncryptionAlgorithm; + this.encryptedDigest = encryptedDigest; + this.unauthenticatedAttributes = ASN1Set.getInstance(unauthenticatedAttributes); + } + + /** + * @deprecated use getInstance() method. + */ + public SignerInfo( + ASN1Sequence seq) + { + Enumeration e = seq.getObjects(); + + version = (ASN1Integer)e.nextElement(); + sid = SignerIdentifier.getInstance(e.nextElement()); + digAlgorithm = AlgorithmIdentifier.getInstance(e.nextElement()); + + Object obj = e.nextElement(); + + if (obj instanceof ASN1TaggedObject) + { + authenticatedAttributes = ASN1Set.getInstance((ASN1TaggedObject)obj, false); + + digEncryptionAlgorithm = AlgorithmIdentifier.getInstance(e.nextElement()); + } + else + { + authenticatedAttributes = null; + digEncryptionAlgorithm = AlgorithmIdentifier.getInstance(obj); + } + + encryptedDigest = DEROctetString.getInstance(e.nextElement()); + + if (e.hasMoreElements()) + { + unauthenticatedAttributes = ASN1Set.getInstance((ASN1TaggedObject)e.nextElement(), false); + } + else + { + unauthenticatedAttributes = null; + } + } + + public ASN1Integer getVersion() + { + return version; + } + + public SignerIdentifier getSID() + { + return sid; + } + + public ASN1Set getAuthenticatedAttributes() + { + return authenticatedAttributes; + } + + public AlgorithmIdentifier getDigestAlgorithm() + { + return digAlgorithm; + } + + public ASN1OctetString getEncryptedDigest() + { + return encryptedDigest; + } + + public AlgorithmIdentifier getDigestEncryptionAlgorithm() + { + return digEncryptionAlgorithm; + } + + public ASN1Set getUnauthenticatedAttributes() + { + return unauthenticatedAttributes; + } + + /** + * Produce an object suitable for an ASN1OutputStream. + * <pre> + * SignerInfo ::= SEQUENCE { + * version Version, + * SignerIdentifier sid, + * digestAlgorithm DigestAlgorithmIdentifier, + * authenticatedAttributes [0] IMPLICIT Attributes OPTIONAL, + * digestEncryptionAlgorithm DigestEncryptionAlgorithmIdentifier, + * encryptedDigest EncryptedDigest, + * unauthenticatedAttributes [1] IMPLICIT Attributes OPTIONAL + * } + * + * EncryptedDigest ::= OCTET STRING + * + * DigestAlgorithmIdentifier ::= AlgorithmIdentifier + * + * DigestEncryptionAlgorithmIdentifier ::= AlgorithmIdentifier + * </pre> + */ + public ASN1Primitive toASN1Primitive() + { + ASN1EncodableVector v = new ASN1EncodableVector(); + + v.add(version); + v.add(sid); + v.add(digAlgorithm); + + if (authenticatedAttributes != null) + { + v.add(new DERTaggedObject(false, 0, authenticatedAttributes)); + } + + v.add(digEncryptionAlgorithm); + v.add(encryptedDigest); + + if (unauthenticatedAttributes != null) + { + v.add(new DERTaggedObject(false, 1, unauthenticatedAttributes)); + } + + return new DERSequence(v); + } +} |