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

org.bouncycastle.asn1.pkcs.EncryptedData 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. Note: this package includes the NTRU encryption algorithms.

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

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.BERSequence;
import org.bouncycastle.asn1.BERTaggedObject;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;

/**
 * The EncryptedData object.
 * 
 *      EncryptedData ::= SEQUENCE {
 *           version Version,
 *           encryptedContentInfo EncryptedContentInfo
 *      }
 *
 *
 *      EncryptedContentInfo ::= SEQUENCE {
 *          contentType ContentType,
 *          contentEncryptionAlgorithm  ContentEncryptionAlgorithmIdentifier,
 *          encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL
 *    }
 *
 *    EncryptedContent ::= OCTET STRING
 * 
*/ public class EncryptedData extends ASN1Object { ASN1Sequence data; ASN1ObjectIdentifier bagId; ASN1Primitive bagValue; public static EncryptedData getInstance( Object obj) { if (obj instanceof EncryptedData) { return (EncryptedData)obj; } if (obj != null) { return new EncryptedData(ASN1Sequence.getInstance(obj)); } return null; } private EncryptedData( ASN1Sequence seq) { int version = ((ASN1Integer)seq.getObjectAt(0)).getValue().intValue(); if (version != 0) { throw new IllegalArgumentException("sequence not version 0"); } this.data = ASN1Sequence.getInstance(seq.getObjectAt(1)); } public EncryptedData( ASN1ObjectIdentifier contentType, AlgorithmIdentifier encryptionAlgorithm, ASN1Encodable content) { ASN1EncodableVector v = new ASN1EncodableVector(); v.add(contentType); v.add(encryptionAlgorithm.toASN1Primitive()); v.add(new BERTaggedObject(false, 0, content)); data = new BERSequence(v); } public ASN1ObjectIdentifier getContentType() { return ASN1ObjectIdentifier.getInstance(data.getObjectAt(0)); } public AlgorithmIdentifier getEncryptionAlgorithm() { return AlgorithmIdentifier.getInstance(data.getObjectAt(1)); } public ASN1OctetString getContent() { if (data.size() == 3) { ASN1TaggedObject o = ASN1TaggedObject.getInstance(data.getObjectAt(2)); return ASN1OctetString.getInstance(o, false); } return null; } public ASN1Primitive toASN1Primitive() { ASN1EncodableVector v = new ASN1EncodableVector(); v.add(new ASN1Integer(0)); v.add(data); return new BERSequence(v); } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy