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
/** * <a href="http://tools.ietf.org/html/rfc5652#section-6.2.2">RFC 5652</a>: * Content encryption key delivery mechanisms. * <p> * <pre> * RecipientKeyIdentifier ::= SEQUENCE { * subjectKeyIdentifier SubjectKeyIdentifier, * date GeneralizedTime OPTIONAL, * other OtherKeyAttribute OPTIONAL * } * * SubjectKeyIdentifier ::= OCTET STRING * </pre> */
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()
/** * @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.
Params:
  • ato – the tagged object holding the object we want.
  • isExplicit – true if the object is meant to be explicitly tagged false otherwise.
Throws:
/** * 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:

Params:
  • obj – the object we want converted.
Throws:
/** * Return a RecipientKeyIdentifier object from the given object. * <p> * Accepted inputs: * <ul> * <li> null &rarr; null * <li> {@link RecipientKeyIdentifier} object * <li> {@link org.bouncycastle.asn1.ASN1Sequence#getInstance(java.lang.Object) ASN1Sequence} input formats with RecipientKeyIdentifier structure inside * </ul> * * @param obj the object we want converted. * @exception IllegalArgumentException if the object cannot be converted. */
public static RecipientKeyIdentifier getInstance(Object obj) { if (obj instanceof RecipientKeyIdentifier) { return (RecipientKeyIdentifier)obj; } if(obj != null) { return new RecipientKeyIdentifier(ASN1Sequence.getInstance(obj)); } return null; } public ASN1OctetString getSubjectKeyIdentifier() { return subjectKeyIdentifier; } public ASN1GeneralizedTime getDate() { return date; } public OtherKeyAttribute getOtherKeyAttribute() { return other; }
Produce an object suitable for an ASN1OutputStream.
/** * Produce an object suitable for an ASN1OutputStream. */
public ASN1Primitive toASN1Primitive() { ASN1EncodableVector v = new ASN1EncodableVector(); v.add(subjectKeyIdentifier); if (date != null) { v.add(date); } if (other != null) { v.add(other); } return new DERSequence(v); } }