package org.bouncycastle.asn1.cms; import org.bouncycastle.asn1.ASN1EncodableVector; import org.bouncycastle.asn1.ASN1GeneralizedTime; import org.bouncycastle.asn1.ASN1Object; import org.bouncycastle.asn1.ASN1OctetString; import org.bouncycastle.asn1.ASN1Primitive; import org.bouncycastle.asn1.ASN1Sequence; import org.bouncycastle.asn1.ASN1TaggedObject; import org.bouncycastle.asn1.DEROctetString; import org.bouncycastle.asn1.DERSequence; /** * RFC 5652: * Content encryption key delivery mechanisms. *
*
* RecipientKeyIdentifier ::= SEQUENCE { * subjectKeyIdentifier SubjectKeyIdentifier, * date GeneralizedTime OPTIONAL, * other OtherKeyAttribute OPTIONAL * } * * SubjectKeyIdentifier ::= OCTET STRING **/ public class RecipientKeyIdentifier extends ASN1Object { private ASN1OctetString subjectKeyIdentifier; private ASN1GeneralizedTime date; private OtherKeyAttribute other; public RecipientKeyIdentifier( ASN1OctetString subjectKeyIdentifier, ASN1GeneralizedTime date, OtherKeyAttribute other) { this.subjectKeyIdentifier = subjectKeyIdentifier; this.date = date; this.other = other; } public RecipientKeyIdentifier( byte[] subjectKeyIdentifier, ASN1GeneralizedTime date, OtherKeyAttribute other) { this.subjectKeyIdentifier = new DEROctetString(subjectKeyIdentifier); this.date = date; this.other = other; } public RecipientKeyIdentifier( byte[] subjectKeyIdentifier) { this(subjectKeyIdentifier, null, null); } /** * @deprecated use getInstance() */ public RecipientKeyIdentifier( ASN1Sequence seq) { subjectKeyIdentifier = ASN1OctetString.getInstance( seq.getObjectAt(0)); switch(seq.size()) { case 1: break; case 2: if (seq.getObjectAt(1) instanceof ASN1GeneralizedTime) { date = ASN1GeneralizedTime.getInstance(seq.getObjectAt(1)); } else { other = OtherKeyAttribute.getInstance(seq.getObjectAt(2)); } break; case 3: date = ASN1GeneralizedTime.getInstance(seq.getObjectAt(1)); other = OtherKeyAttribute.getInstance(seq.getObjectAt(2)); break; default: throw new IllegalArgumentException("Invalid RecipientKeyIdentifier"); } } /** * Return a RecipientKeyIdentifier object from a tagged object. * * @param ato the tagged object holding the object we want. * @param isExplicit true if the object is meant to be explicitly * tagged false otherwise. * @exception IllegalArgumentException if the object held by the * tagged object cannot be converted. */ public static RecipientKeyIdentifier getInstance(ASN1TaggedObject ato, boolean isExplicit) { return getInstance(ASN1Sequence.getInstance(ato, isExplicit)); } /** * Return a RecipientKeyIdentifier object from the given object. *
* Accepted inputs: *