All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.bouncycastle.asn1.cms.KeyTransRecipientInfo Maven / Gradle / Ivy

Go to download

The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8 with debug enabled.

There is a newer version: 1.70
Show newest version
package org.bouncycastle.asn1.cms;

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.ASN1TaggedObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;

/**
 * RFC 5652:
 * Content encryption key delivery mechanisms.
 * 
 * KeyTransRecipientInfo ::= SEQUENCE {
 *     version CMSVersion,  -- always set to 0 or 2
 *     rid RecipientIdentifier,
 *     keyEncryptionAlgorithm KeyEncryptionAlgorithmIdentifier,
 *     encryptedKey EncryptedKey 
 * }
 * 
*/ public class KeyTransRecipientInfo extends ASN1Object { private ASN1Integer version; private RecipientIdentifier rid; private AlgorithmIdentifier keyEncryptionAlgorithm; private ASN1OctetString encryptedKey; public KeyTransRecipientInfo( RecipientIdentifier rid, AlgorithmIdentifier keyEncryptionAlgorithm, ASN1OctetString encryptedKey) { if (rid.toASN1Primitive() instanceof ASN1TaggedObject) { this.version = new ASN1Integer(2); } else { this.version = new ASN1Integer(0); } this.rid = rid; this.keyEncryptionAlgorithm = keyEncryptionAlgorithm; this.encryptedKey = encryptedKey; } /** * @deprecated use getInstance() */ public KeyTransRecipientInfo( ASN1Sequence seq) { this.version = (ASN1Integer)seq.getObjectAt(0); this.rid = RecipientIdentifier.getInstance(seq.getObjectAt(1)); this.keyEncryptionAlgorithm = AlgorithmIdentifier.getInstance(seq.getObjectAt(2)); this.encryptedKey = (ASN1OctetString)seq.getObjectAt(3); } /** * Return a KeyTransRecipientInfo object from the given object. *

* Accepted inputs: *

    *
  • null → null *
  • {@link KeyTransRecipientInfo} object *
  • {@link org.bouncycastle.asn1.ASN1Sequence#getInstance(java.lang.Object) ASN1Sequence} input formats with KeyTransRecipientInfo structure inside *
* * @param obj the object we want converted. * @exception IllegalArgumentException if the object cannot be converted. */ public static KeyTransRecipientInfo getInstance( Object obj) { if (obj instanceof KeyTransRecipientInfo) { return (KeyTransRecipientInfo)obj; } if(obj != null) { return new KeyTransRecipientInfo(ASN1Sequence.getInstance(obj)); } return null; } public ASN1Integer getVersion() { return version; } public RecipientIdentifier getRecipientIdentifier() { return rid; } public AlgorithmIdentifier getKeyEncryptionAlgorithm() { return keyEncryptionAlgorithm; } public ASN1OctetString getEncryptedKey() { return encryptedKey; } /** * Produce an object suitable for an ASN1OutputStream. */ public ASN1Primitive toASN1Primitive() { ASN1EncodableVector v = new ASN1EncodableVector(); v.add(version); v.add(rid); v.add(keyEncryptionAlgorithm); v.add(encryptedKey); return new DERSequence(v); } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy