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

org.bouncycastle.asn1.icao.LDSSecurityObject 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.

The newest version!
package org.bouncycastle.asn1.icao;

import java.util.Enumeration;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;

/**
 * The LDSSecurityObject object (V1.8).
 * 
 * LDSSecurityObject ::= SEQUENCE {
 *   version                LDSSecurityObjectVersion,
 *   hashAlgorithm          DigestAlgorithmIdentifier,
 *   dataGroupHashValues    SEQUENCE SIZE (2..ub-DataGroups) OF DataHashGroup,
 *   ldsVersionInfo         LDSVersionInfo OPTIONAL
 *   -- if present, version MUST be v1 }
 *   
 * DigestAlgorithmIdentifier ::= AlgorithmIdentifier,
 * 
 * LDSSecurityObjectVersion :: INTEGER {V0(0)}
 * 
*/ public class LDSSecurityObject extends ASN1Object implements ICAOObjectIdentifiers { public static final int ub_DataGroups = 16; private ASN1Integer version = new ASN1Integer(0); private AlgorithmIdentifier digestAlgorithmIdentifier; private DataGroupHash[] datagroupHash; private LDSVersionInfo versionInfo; public static LDSSecurityObject getInstance( Object obj) { if (obj instanceof LDSSecurityObject) { return (LDSSecurityObject)obj; } else if (obj != null) { return new LDSSecurityObject(ASN1Sequence.getInstance(obj)); } return null; } private LDSSecurityObject( ASN1Sequence seq) { if (seq == null || seq.size() == 0) { throw new IllegalArgumentException("null or empty sequence passed."); } Enumeration e = seq.getObjects(); // version version = ASN1Integer.getInstance(e.nextElement()); // digestAlgorithmIdentifier digestAlgorithmIdentifier = AlgorithmIdentifier.getInstance(e.nextElement()); ASN1Sequence datagroupHashSeq = ASN1Sequence.getInstance(e.nextElement()); if (version.getValue().intValue() == 1) { versionInfo = LDSVersionInfo.getInstance(e.nextElement()); } checkDatagroupHashSeqSize(datagroupHashSeq.size()); datagroupHash = new DataGroupHash[datagroupHashSeq.size()]; for (int i= 0; i< datagroupHashSeq.size();i++) { datagroupHash[i] = DataGroupHash.getInstance(datagroupHashSeq.getObjectAt(i)); } } public LDSSecurityObject( AlgorithmIdentifier digestAlgorithmIdentifier, DataGroupHash[] datagroupHash) { this.version = new ASN1Integer(0); this.digestAlgorithmIdentifier = digestAlgorithmIdentifier; this.datagroupHash = datagroupHash; checkDatagroupHashSeqSize(datagroupHash.length); } public LDSSecurityObject( AlgorithmIdentifier digestAlgorithmIdentifier, DataGroupHash[] datagroupHash, LDSVersionInfo versionInfo) { this.version = new ASN1Integer(1); this.digestAlgorithmIdentifier = digestAlgorithmIdentifier; this.datagroupHash = datagroupHash; this.versionInfo = versionInfo; checkDatagroupHashSeqSize(datagroupHash.length); } private void checkDatagroupHashSeqSize(int size) { if ((size < 2) || (size > ub_DataGroups)) { throw new IllegalArgumentException("wrong size in DataGroupHashValues : not in (2.."+ ub_DataGroups +")"); } } public int getVersion() { return version.getValue().intValue(); } public AlgorithmIdentifier getDigestAlgorithmIdentifier() { return digestAlgorithmIdentifier; } public DataGroupHash[] getDatagroupHash() { return datagroupHash; } public LDSVersionInfo getVersionInfo() { return versionInfo; } public ASN1Primitive toASN1Primitive() { ASN1EncodableVector seq = new ASN1EncodableVector(); seq.add(version); seq.add(digestAlgorithmIdentifier); ASN1EncodableVector seqname = new ASN1EncodableVector(); for (int i = 0; i < datagroupHash.length; i++) { seqname.add(datagroupHash[i]); } seq.add(new DERSequence(seqname)); if (versionInfo != null) { seq.add(versionInfo); } return new DERSequence(seq); } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy